[Federal Register Volume 87, Number 137 (Tuesday, July 19, 2022)]
[Proposed Rules]
[Pages 43114-43166]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-14701]



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Vol. 87

Tuesday,

No. 137

July 19, 2022

Part II





Department of Housing and Urban Development





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24 CFR Parts 3280, 3282, 3285, et al.





Manufactured Home Construction and Safety Standards; Proposed Rule

  Federal Register / Vol. 87, No. 137 / Tuesday, July 19, 2022 / 
Proposed Rules  

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DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT

24 CFR Parts 3280, 3282, 3285, and 3286

[Docket No. FR-6233-P-01]
RIN 2502-AJ58


Manufactured Home Construction and Safety Standards

AGENCY: Office of the Assistant Secretary for Housing--Federal Housing 
Commissioner, HUD.

ACTION: Proposed rule.

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SUMMARY: This proposed rule would amend the Federal Manufactured Home 
Construction and Safety Standards (the Construction and Safety 
Standards) by adopting the fourth and fifth group of recommendations 
made to HUD by the Manufactured Housing Consensus Committee (MHCC). 
This rule would also amend the Manufactured Home Procedural and 
Enforcement Regulations, the Model Manufactured Home Installation 
Standards and the Manufactured Home Installation Program regulations. 
The National Manufactured Housing Construction and Safety Standards Act 
of 1974 (the Act), as amended by the Manufactured Housing Improvement 
Act of 2000, requires HUD to publish in the Federal Register any 
proposed revised Construction and Safety Standard submitted by the 
MHCC. The MHCC has prepared and submitted to HUD its fourth and fifth 
groups of recommendations to improve various aspects of the 
Construction and Safety Standards. HUD has reviewed those proposals and 
has made a number of editorial revisions to them. These recommendations 
are being published to provide notice of the proposed revisions and an 
opportunity for public comment.

DATES: Comment Due Date: September 19, 2022.

ADDRESSES: Interested persons are invited to submit comments regarding 
this rule to the Office of General Counsel, Regulations Division, 
Department of Housing and Urban Development, 451 7th Street SW, Room 
10276, Washington, DC 20410-0500. All submissions should refer to the 
above docket number and title. Submission of public comments may be 
carried out by hard copy or electronic submission.
    1. Submission of Hard Copy Comments. Comments may be submitted by 
mail or hand delivery. Each commenter submitting hard copy comments, by 
mail or hand delivery, should submit comments to the address above, 
addressed to the Regulations Division. Due to security measures at all 
federal agencies, submission of comments by mail often results in 
delayed delivery. To ensure timely receipt of comments, HUD recommends 
that any comments submitted by mail be submitted at least 2 weeks in 
advance of the public comment deadline. All hard copy comments received 
by mail or hand delivery are a part of the public record and will be 
posted to www.regulations.gov without change.
    2. Electronic Submission of Comments. Interested persons may submit 
comments electronically through the Federal eRulemaking Portal at 
www.regulations.gov. HUD strongly encourages commenters to submit 
comments electronically. Electronic submission of comments allows the 
commenter maximum time to prepare and submit a comment, ensures timely 
receipt by HUD, and enables HUD to make them immediately available to 
the public. Comments submitted electronically through the 
www.regulations.gov website can be viewed by other commenters and 
interested members of the public. Commenters should follow the 
instructions provided on that site to submit comments electronically.

    Note:  To receive consideration as public comments, comments 
must be submitted through one of the two methods specified above. 
Again, all submissions must refer to the docket number and title of 
the rule.

    3. No Facsimile Comments. Facsimile (FAX) comments are not 
acceptable.
    4. Public Inspection of Public Comments. All properly submitted 
comments and communications submitted to HUD will be available for 
public inspection and copying between 8 a.m. and 5 p.m. weekdays at the 
above address, or at www.regulations.gov. HUD strongly encourages the 
public to view the docket file at www.regulations.gov. Due to security 
measures at the HUD Headquarters building, an advance appointment to 
review the public comments must be scheduled by calling the Regulations 
Division at 202-402-3055 (this is not a toll-free number). Individuals 
with speech or hearing impairments may access this number via TTY by 
calling the Federal Relay Service at 800-877-8339 (this is a toll-free 
number). Copies of all comments submitted are available for inspection 
and downloading at www.regulations.gov.

FOR FURTHER INFORMATION CONTACT: Teresa B. Payne, Administrator, Office 
of Manufactured Housing Programs, Office of Housing, Department of 
Housing and Urban Development, 451 7th Street SW, Washington, DC 20410; 
telephone (202) 402-2698 (this is not a toll-free number). Persons with 
hearing or speech impairments may access this number via TTY by calling 
the Federal Relay Service at (800) 877-8389 (this is a toll-free 
number).

SUPPLEMENTARY INFORMATION:

I. Background

    The National Manufactured Housing Construction and Safety Standards 
Act of 1974 (42 U.S.C. 5401-5426) (the Act) authorizes HUD to establish 
and amend the Federal Manufactured Home Construction and Safety 
Standards (the Construction and Safety Standards or MHCSS) codified in 
title 24 of the Code of Federal Regulations (CFR), part 3280. The Act 
was amended by the Manufactured Housing Improvement Act of 2000 (Pub. 
L. 106-569, Approved December 27, 2000) which expanded the purposes of 
the Act, created the Manufactured Housing Consensus Committee (MHCC), a 
consensus committee responsible for providing HUD recommendations to 
adopt, revise and interpret HUD's Construction and Safety Standards, 
and established the MHCC and regulatory development process. HUD's 
Construction and Safety Standards only apply to the design, 
construction, and installation of new manufactured homes.
    The MHCC held its first meeting in August of 2002 and began work on 
reviewing possible revisions to the Construction and Safety Standards. 
The MHCC developed its own priorities for preparing proposed revisions 
for HUD to consider. As the MHCC proceeded, proposed revisions to the 
Construction and Safety Standards were divided into sets.
    This proposed rule is based on the fourth and fifth sets of MHCC 
recommendations to improve various aspects of the Construction and 
Safety Standards. HUD reviewed those recommendations submitted by the 
MHCC and adopted them after making editorial revisions and some 
additions. The following is a discussion of the specific revisions to 
the Construction and Safety Standards that are included in this 
proposed rule.

II. Proposed Changes

    The proposed rule would revise 24 CFR part 3280, the Construction 
and Safety Standards, and would also revise the incorporated by 
reference standards, where indicated. It also proposes revisions to 
HUD's Procedural and Enforcement Regulations (24 CFR part 3282), Model 
Manufactured Home Installation Standards (24 CFR part 3285), and 
Manufactured Home

[[Page 43115]]

Installation Program (24 CFR part 3286). Many of the proposed changes 
would codify existing building practices or conform HUD standards to 
other existing residential building codes. As identified in the summary 
table below, HUD has identified eight (8) standards in this proposed 
rule that would have an economic impact on the production costs of 
manufactured homes: changes to allowed moisture content of treated 
lumber, modifications to the temperature ratings for air ducts, adding 
a requirement for the water resistive barrier, modifications to kitchen 
cabinet fire protection, changes to the maximum distance from the 
fixture trap to vent, under-chassis line-voltage wiring protection, 
updated reference standards allowing reduced design values for certain 
lumber, and modifications to structural design requirements for attics. 
HUD is requesting comment whether any of the other proposed changes 
would have an economic impact or impose additional costs on the 
production of manufactured housing, specifically on the analysis 
supporting this proposed rule and the assumptions used.

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BILLING CODE 4210-67-C
    The following is a discussion of the specific revisions to the 
Construction and Safety Standards that are proposed by this rule.

A. General Update of the Standards and New Standards Incorporated by 
Reference

    HUD proposes to revise the definitions for ``Certification label'' 
and ``Dwelling unit'' in Sec.  3280.2 to correct references and clarify 
the criteria for defining dwelling units. HUD proposes to add 
additional definitions for ``Dwelling,'' ``Multipurpose fire sprinkler 
system,'' ``Stand-alone fire sprinkler system,'' and ``Water resistive 
barrier'' to further clarify terms regarding standards revisions and 
standards incorporated by reference that are recommended by the MHCC.
    A significant goal of this proposed rule is to update standards 
incorporated by reference under Sec.  3280.4 to align the regulations 
at 24 CFR part 3280 to more current building codes and practices. As a 
result, this rule proposes to revise 70 current standards, add 16 new 
standards, and incorporate by reference 2 standards in a new location, 
for a total of 88 standards, under Sec.  3280.4 (see Table 2 for more 
detail and information). Notable changes to the reference standards 
being added or revised are updated references for unitary air-
conditioning and air-source heat pump equipment (NSI/AHRI Standard 210/
240-2008 with Addenda 1 and 2); gas fired central furnaces (ANSI 
Z21.47); heating and cooling equipment and systems (UL 1995); and 
safety of household and electronic appliances (UL 60335-2-34). New 
standards will allow for the use of more modern gas-fired appliances, 
such as tankless water heaters (ANSI Z21.10.3) and will eliminate the 
need for Alternative Construction (AC) letters in some cases. Many 
paragraphs within Sec.  3280.4 are unchanged in content but are being 
revised to reflect a redesignated outline structure.
    HUD also proposes to amend Sec.  3280.5 to provide for multi-
dwelling unit manufactured homes and reinforce the requirement for each 
manufactured home dwelling unit to bear a data plate and to include an 
updated statement on the Wind Zone Map that references an updated ASCE/
SEI 7-05 standard for the anchoring and foundation system of the unit. 
Consistent with a 2015 determination made by the MHCC, HUD is proposing 
a maximum of three dwelling units for a multi-dwelling unit 
manufactured home. The MHCC based its determination on ensuring 
consistency with a similar state code. HUD is interested in public 
comment specific to this maximum provision for three dwelling units, 
including benefits and challenges if a four unit maximum were 
considered and how any conflict with differing state maximums would be 
handled. HUD is also making a conforming change to Sec.  3282.8, by 
removing paragraph (l).

B. Planning Considerations

    The proposed rule would amend Sec.  3280.102 to add definitions for 
``Air, exhaust,'' ``Air, outdoor,'' ``Exhaust system,'' ``Mechanical 
ventilation,'' ``Natural ventilation,'' ``Supply system,'' and 
``Ventilation''. The proposed rule would clarify the terminology 
utilized for outlining the airflow and mechanical

[[Page 43120]]

ventilation system requirements for a manufactured home, which is 
described in the proposed paragraph changes under Sec.  3280.103. The 
proposed changes would specify the allowance for local exhaust systems 
to be utilized in kitchens and bathrooms and clarify the distance 
requirement for range and cooktop exhaust systems to be located at no 
more than three (3) feet apart. HUD also is proposing to add 
clarifications regarding the airflow rating that should be utilized for 
design of a home, provided that duct sizing meets either prescriptive 
ANSI/ASHRAE standards or the ventilation system manufacturer's design 
criteria. The proposed changes would also make editorial revisions to 
Sec. Sec.  3280.103, 3280.105, 3280.109 and 3280.115, accommodating 
design for multi-dwelling unit manufactured homes.
    The proposed rule would amend the provisions for exit doors in 
Sec.  3280.105 to accommodate open floorplans, update exterior door 
size requirements and would, in Sec.  3280.112, establish a 30-inch 
minimum hallway size requirement for homes 14 feet in inside width or 
larger.
    The proposed rule would amend Sec.  3280.113 to reflect more 
current ANSI standards (ANSI Z97.1-2009) for safety glazing materials 
and establish new soundproofing requirements for multi-dwelling unit 
manufactured homes in a new section 3280.115.

C. Fire Safety

    HUD is proposing to amend Sec.  3280.203 to clarify that non-
horizontal surfaces above the horizontal plane formed by the bottom of 
the range hood are not considered to be exposed surfaces subject to 
fire protective requirements. In Sec.  3280.204, the proposed rule 
would also clarify the requirements for finish materials used in range 
hoods and establish a fire spread rating. The proposed rule is needed 
to ensure that the use of decorative range hood covers meet the fire 
safety standards in the Construction and Safety Standards. It is more 
stringent than model codes for site-built one-to-four single family 
housing, which contains no such requirement.
    HUD is proposing to expand the fire safety subpart to include 
guidelines and requirements for the design and installation of fire 
sprinkler systems when a manufacturer chooses to install such a system 
as outlined in Sec.  3280.214. While this proposed rule is not adding a 
requirement that fire sprinkler systems be installed, when a 
manufacturer installs a fire sprinkler system, this section would 
establish the requirements for the installation of the fire sprinkler 
system in a manufactured home. This section would apply to both stand-
alone and multipurpose fire sprinkler systems that do not include the 
use of antifreeze. A back-flow preventer is not required to separate a 
stand-alone sprinkler system from the home's water distribution system.
    The proposed rule would establish minimum requirements for the 
design of a fire sprinkler system itself to be in accordance with NFPA 
13D (proposed for incorporation by reference in proposed Sec.  3280.4) 
or equivalent. The proposed rule would outline required sprinkler 
locations, excepting specific areas within a manufactured home, 
temperature ratings and separation from heat sources, installation 
requirements for freezing conditions, and the maximum areas of coverage 
for a single sprinkler head. The proposed rule would also establish 
requirements for installation practices, piping support and sizing 
standards to achieve minimum pressure requirements, shutoff valves, 
drainage, minimum flow, design flow rates, and operational testing. The 
proposed rule would also require the manufacturer to permanently affix 
a Fire Sprinkler System Certificate adjacent to the data plate and 
specify on the Fire Sprinkler System Certificate the minimum required 
pressure in pounds per square inch (psi) and flow rate for the water 
supply system. This proposal was not specifically recommended by the 
MHCC but added by HUD to support the addition of the requirements 
proposed for multi-dwelling unit manufactured homes.
    Per MHCC recommendations, HUD is also proposing to add new fire 
safety requirements for multi-dwelling unit manufactured homes in Sec.  
3280.215. In manufactured homes with more than one dwelling unit, each 
dwelling unit must be separated from each other by wall and floor 
assemblies having not less than a 1-hour fire resistance rating when 
tested in accordance with Chapter 16 of the National Design 
Specification for Wood Construction, NDS-2015, the standards proposed 
to be incorporated by reference under Sec.  3280.4. The proposed rule 
would outline requirements for fire-resistant floor/ceiling and wall 
assemblies and the fire resistance rating of supporting construction of 
such assemblies. Penetrations of wall or floor-ceiling assemblies in 
multi-dwelling unit manufactured homes are required to be fire-
resistance rated in accordance with MHCC recommendations specified in 
the proposed standards under Sec.  3280.215.
    HUD is also including in this proposed rule a new section under 
Sec.  3280.216 outlining draftstopping requirements, as recommended by 
the MHCC, for multi-dwelling unit manufactured homes. Draftstopping 
standards for single dwelling unit manufactured homes were previously 
recommended by MHCC but were not included in the prior rulemaking that 
addressed the MHCC 3rd set of recommendations (86 FR 2496, January 12, 
2021) due to cost impacts and will be added to the agenda of future 
MHCC consideration, as discussed in the proposed rule for the prior 
rulemaking (85 FR 5589, 5594, January 31, 2020). This proposed rule 
would apply them to the multi-dwelling unit manufactured homes, 
however, since multi-dwelling units contain numerous kitchens, 
furnaces, and other causes of residential fires, it inherently has a 
greater risk and containment is essential for safety of the occupants. 
This proposal is not expected to add additional costs beyond those 
already incurred in the normal design and construction process for 
multi-dwelling unit manufactured homes.

D. Body and Frame Requirements

    The proposed rule would amend Sec.  3280.303 to reflect that all 
construction methods used in the construction process for manufactured 
homes must conform not only to accepted engineering practices, but to 
an approved quality assurance manual as required by Sec. Sec.  3282.203 
and 3282.361(c), to ensure durable, livable, and safe housing. This 
proposal underscores the importance and HUD prioritization of ensuring 
compliance with effective quality assurance standards to enhance and 
improve the construction process and quality of manufactured homes.
    The proposed rule would amend Sec.  3280.304 to update the 
reference standards and specifications for steel, wood and wood 
products, unclassified materials, and fasteners to allow manufacturers 
and designers to use more recent publications and align the MHCSS with 
more current industry standards.
    HUD is also proposing to amend language under Sec.  3280.305 to 
update the reference for design wind pressures for Exposure C from ASCE 
7-88 to ASCE/SEI 7-05 that is to be specified based on the Basic Wind 
Zone Map for Manufactured Housing, which can be used as an alternate 
option to design homes in lieu of using the Table of Design Wind 
Pressures found in Sec.  3280.305. In the MHCC recommendations to HUD, 
the

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committee recommended that the wind pressures included in the Table of 
Design Wind Pressures remain unchanged, but requested that ``HUD staff 
work to update the wind speeds references'' that are used to design 
manufactured homes in Wind Zones II and III.
    As requested, HUD staff completed a general comparison of ASCE 7-88 
and ASCE 7-05 followed by an in-depth analysis to determine the 
appropriate wind speeds for Wind Zones II and III that would best align 
and correlate with wind pressures in the Table of Design Wind 
Pressures. As a general introduction, historical references to wind 
speed within the MHCSS are based on ``fastest mile'' wind speed 
measurements. These fastest mile wind speeds are currently 100 miles 
per hour (mph) for Wind Zone II and 110 mph for Wind Zone III. Fastest 
mile means the average speed at which an airborne particle would travel 
a mile in the direction of the wind, in mph. However, most wind 
professionals today, including ASCE, now use a peak three-second gust 
wind speed to define wind loads, which is the highest average speed 
measured over a three second period of time, in mph. It is important to 
understand this change in both wind speed measurement and terminology 
when assessing the new wind speed references in this proposed rule.
    In addition to the ASCE 7 update for wind speed measurement from 
``fastest mile'' to ``three-second gust,'' ASCE updated the 
mathematical formulas used to determine the wind pressures and the wind 
speeds in hurricane-prone areas. This review led to the in-depth 
analysis below and the revised wind speeds included in this proposed 
rule.
    HUD performed two different methods to determine revised wind 
speeds. The first was to review the HUD wind speed/zone map with the 
wind speed map in ASCE 7-05, to verify that a manufactured home would 
be subject to comparable wind speeds if designed using ASCE 7-05. The 
second used the prescriptive wind pressures shown in the Table of 
Design Wind Pressures under Sec.  3280.305 as a baseline to perform a 
series of iterative calculations to determine wind speeds that would 
produce similar wind pressures for Wind Zones II and III.
    The first analysis consisted of overlaying the contour lines for 
Wind Zones II and III on top of the wind speed map published in ASCE 7-
05 to verify that manufactured homes would be designed for wind speeds 
that are comparable to the requirements of ASCE 7-05. Using this 
method, the maximum wind speed identified in ASCE 7-05 for the 
continental United States of America is 150 mph. The only other 
location ASCE 7-05 indicates a wind speed above 150 mph is Guam, which 
requires a wind speed of 170 mph. Setting 150 mph as the upper bound 
(Wind Zone III) resulted in reviewing the locations between Wind Zones 
II and III compared to the those in ASCE 7-05. It was found that there 
are multiple wind speeds between the ASCE 7-05 contours lines ranging 
from 100 mph to a maximum of 140 mph. Therefore, since the HUD wind 
zones encompass multiple wind speeds and the HUD wind zones must be 
appropriate for all homes within these limits, Wind Zone II was set to 
a wind speed of 140 mph. Based off this analysis, HUD staff determined 
the revised wind speeds for Wind Zones II and III should be 140 mph and 
150 mph, respectively, based off a three-second gust.
    HUD's second analysis used the Durst Curve found in the commentary 
of ASCE 7 to convert the fastest mile to three-second gust and compare 
it to the International Building Code's (IBC) equation of Vfm= (V3sec-
10.5)/1.05 (IBC Section 1609.3). Both conversions resulted in wind 
speeds for Wind Zones II and III increasing from 100 mph and 110 mph, 
to 120 mph and 130 mph, respectively. However, these conversions could 
not be used alone as they do not factor in changes ASCE 7 made 
throughout the years to determine the wind pressures for building 
design that are now based on wind speed. The following paragraphs 
describe the main differences between the 1988 and 2005 editions of the 
ASCE 7 code.
     ASCE 7-88 and ASCE 7-05 use the following wind pressure 
(P) equation P = q*Gh*Cp-qh(GCpi) (eq. 1)
     ASCE 7-88's velocity pressure (q/qh) is equal to: q/qh = 
0.00256*Kz*(I*V)2 (eq. 2) where V is fastest mile wind speed, I = 1.05 
for areas 100 miles from coast, Kz = 0.8, Gh = 1.32 and GCpi = +/-0.25
     ASCE 7-05's velocity pressure (q/qh) is equal to: q/qh = 
0.00256*Kz*Kzt*Kd*I*V2 (eq. 3) where V is 3 second gust wind speed, I = 
1.0, Kz = 0.85, G = 0.85, GCpi = +/- 0.18, Kzt = 1, Kd = 0.85
    Using the above equations and keeping V constant, equation 2 and 3 
above would simplify to q=0.00226*V2 and q=0.00185*V2 for ASCE 7-88 and 
ASCE 7-05 respectively, which results is an 18 percent decrease in 
pressure from ASCE 7-88 to ASCE 7-05. Using these values for ``q'' and 
plugging them into the first equation, the design wind pressure (P) 
would be decreased even further. The overall wind design pressure would 
be decreased 47 percent if the wind speeds currently published in the 
MHCSS were left unrevised yet the design option was updated to ASCE 7-
05.
    HUD conducted an iterative analysis to match the prescriptive wind 
pressures shown in the Table of Design Wind Pressure to wind pressures 
using the ASCE 7-05 simplified method, also known as Method 1. The 
prescriptive Main Wind Force Resisting System (MWFRS) wind pressures 
are 39 pounds per square foot (psf) and 47 psf for Wind Zones II and 
III, respectively. Using ASCE 7 Method 1, winds speeds could be 
approximately 145 mph for Zone II and 160 mph for Zone III. However, 
based on the first analysis, it was determined that wind speeds of 140 
mph and 150 mph for Zones II and III would keep manufactured housing on 
par with design of other single-family structures. Finally, wind speeds 
of 140 mph and 150 mph were used to compare the prescriptive component 
and cladding wind pressures in Sec.  3280.305 to ASCE 7-05, which 
resulted in approximately the same wind pressures depending on the 
tributary area used. Based on these thorough analyses, HUD is proposing 
to update the wind speeds for Wind Zones II and III to 140 mph and 150 
mph, respectively, based upon a three-second gust.
    HUD also proposes to update the isotach reference under Sec.  
3280.305(c)(2)(iii)(A) for Wind Zone III in the State of Alaska to the 
110 mph isotach on the ANSI/ASCE 7-05 map. Further, HUD is updating the 
U.S. territories to address only those regions applicable for U.S. 
jurisdiction and proposes to eliminate reference to the Trust Territory 
of the Pacific Islands. Lastly, HUD proposes that the entire territory 
of Guam use a wind speed of 170 mph as shown in figure 6-1 of ANSI/ASCE 
7-05. HUD has made correlating changes to the standards in this 
proposed rule, where appropriate, to account for these changes.
    The reference standards for the structural design requirements for 
welded connections would also be updated in Sec.  3280.305 to more 
current AISI standards. New language is also added in this paragraph 
(k) of this section to define and clarify ``attic areas'' and allow 
standard computer truss modeling methodologies to be utilized to design 
trusses. The proposal also establishes qualifying factors for the 
requirement of the 20 psf live loads for design of ceiling joists/
bottom chords. To correct the interpretation that the entire attic 
space must be designed for storage and the live load of 20 psf

[[Page 43122]]

regardless of whether the space was accessible for or capable of 
accommodating storage space, the new qualifiers include criteria for 
attic access opening, joist slope, and minimum insulation depth that 
will allow for potential optimization of truss design and eliminate 
designs based on unnecessary or unrealistic loading conditions. These 
changes will allow the industry to value engineer structural roof 
members and help the industry to remain competitive in providing 
affordable housing.
    The proposed rule would amend Sec.  3280.307 to require the 
exterior wall envelopes to include a water resistive barrier (WRB) 
behind the exterior cladding of manufactured homes, as well as a means 
of draining water that enters the assembly. As most higher-end 
manufactured homes already include a WRB as a standard feature, this 
change will likely affect an estimated 30 percent% of the current 
production. The use of a WRB is a commonly found product used in most 
single-family home construction and is required by many state and local 
codes. The WRB increases home resiliency and durability and offers a 
second layer of protection from bulk water damage over the exterior 
cladding.
    The MHCC also recommended an edit to the former Sec.  3280.309, 
changing manufactured homes to dwelling units, but the Health Notice on 
formaldehyde emissions was removed from the MHCSS during the last 
rulemaking and HUD will not take action on that recommendation.
    Finally, proposed updates will add a new subsection Sec.  3280.309 
to provide standards for vinyl siding and polypropylene siding used in 
manufactured homes. Most siding manufacturers have instructions that 
reference the Vinyl Siding Institute Installation Instructions, which 
in turn reference ASTM standards. For consistency of both material and 
installation requirements, this proposed change will require that vinyl 
siding used in manufactured home construction comply with ASTM 
standards and must be certified or listed and labeled as conforming to 
those requirements.

E. Testing

    The proposed rule would update and amend testing standards for 
windows, sliding glass doors, and skylights under Sec.  3280.403, 
egress windows and devices under Sec.  3280.404, and swinging exterior 
passage doors under Sec.  3280.405, for use in manufactured homes. The 
proposed rule would update standards for AAMA 1701.2 from the 1995 
version to the 2012 version; ANSI Z97.1 from the 2004 version to the 
2009 version; and AAMA 1702.2 from the 1995 version to the 2012 
version. The proposed rule also adds AAMA/WDMA/CSA 101/I.S.2/A440-17 
North American Fenestration Standard (NAFS) as an alternative 
compliance path in the sections of the MHCSS that govern windows, 
sliding glass doors, and skylights; egress windows; and swinging 
exterior passage doors. Windows used in manufactured homes are often 
exposed to some of their most severe service prior to the home being 
installed, as they may be subjected to extreme wind pressure and 
vibration while the home is being transported to the installation site. 
Testing standards ensure that windows can withstand such pressures 
while still performing to air and water specifications. The proposed 
rule also requires fenestration products to be certified by an ISO/IEC 
17065 accredited body, to ensure the competence, consistent operation 
and impartiality of product, process, and service certification bodies. 
This proposed rule change aligns the code with more current industry 
standards.

F. Thermal Protection

    The proposed rule updates the reference standards for vapor 
retarder testing methods to a more current version of ASTM E96/E96M in 
Sec. Sec.  3280.504. In Sec.  3280.510, clarifications are made to make 
clear that heat loss and comfort cooling certificates must be visible 
to home occupants and be permanently affixed within each dwelling unit 
to accommodate multi-dwelling unit manufactured homes and that homes 
designated as suitable for central air conditioning must provide 
certified capacity information, including correct air supply entrances 
and air return locations.

G. Plumbing Systems

    The proposed rule would add flexibility for the use of heat tape or 
piping heating cable used on plumbing systems in manufactured homes 
under Sec.  3280.603(b)(4)(ii) to increase the number of available 
options of heat tapes and pipe heating cables for use by consumers and 
manufacturers to prevent freezing of plumbing pipes. Heat tape or pipe 
heating cables used for manufactured homes are not different from those 
used in conventional site-built homes. This change will allow 
manufacturers to use heat tape or pipe heating cable listed or 
certified for its intended purpose. The proposed rule would also update 
reference standards for materials listed under Sec.  3280.604 to 
current industry standards.
    HUD also proposes to update the code governing the requirement for 
shower compartment installation under Sec.  3280.607(b)(3). The rule 
change will allow roll-in-type and transfer-type shower compartments 
(accessible bathing fixtures) with thresholds that comply with ICC ANSI 
A117.1, Standard for Accessible and Usable Buildings and Facilities, 
and will permit manufacturers to install bathing systems designed to 
serve people with disabilities. The current code imposes limitations on 
accessible shower compartment features by requiring minimum dam or 
threshold height. Currently, consumers have to remodel the existing 
standard shower compartment to integrate an accessible shower 
compartment or manufacturers need to obtain an Alternative Construction 
letter to install accessible shower compartments. The proposed rule 
change will codify accessible shower compartments into the MHCSS, 
eliminating the need for Alternative Construction letters for 
accessible shower compartments and allowing consumers to directly buy 
homes with accessible shower compartments. Under Sec.  3280.609, 
language is amended to clarify hot water supply systems are required 
for each dwelling unit equipped with a kitchen sink, bathtub, and/or 
shower.
    In Sec.  3280.611, amendments are proposed to increase the maximum 
distance of a fixture trap to the vent, commonly referred to as the 
``trap arm.'' It is imperative that a plumbing fixture be located close 
enough to the vertical vent pipe to prevent a siphon from where 
existing water is pulled out of the trap rendering it ineffective. This 
maximum distance is determined by the diameter and the number of 
fixtures draining through the drain pipe. The proposed rule change 
increases the maximum distance of the fixture trap to the vent thus 
aligning the distances in the MHCSS with those of the International 
Plumbing Code. This rule change affords plumbing engineers more 
flexibility in designing circuit vents for any specific floorplan. 
Bathroom fixtures (showers, sinks, toilets) must be located within the 
distances prescribed from the vent pipe; therefore, the increased 
maximum distances allow the designers to locate the vent pipe in the 
walls to accommodate a preferred fixture layout, whereas previously the 
layout may have required modification due to shorter permissible 
distances and floor plan constraints (e.g., location of available walls 
for the vent pipe). Consistency with other industry guidance 
(International Plumbing Code

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and the American Society of Plumbing Engineers) reduces the likelihood 
of delays in the design approval process arising from designers using 
standard industry practice but which resulted in trap arms that 
exceeded the lengths previously allowed by the table in Sec.  
3280.611(c).

H. Heating, Cooling and Fuel Burning Systems

    The proposed rule would update the reference standards included in 
the definitions for Class 0 air ducts and connectors under Sec.  
3280.702 to UL 181-2013, more current UL standards. Reference standards 
would also be updated in Sec.  3280.703 and two new standards (ANSI 
Z21.10.3 and ANSI Z21.75) are proposed to be added for gas-fired water 
heaters with input ratings above 75,000 British thermal units (Btu) per 
hour, circulating and instantaneous; and electrical heating appliances 
(UL 499-2014).
    In Sec.  3280.705, standards for gas piping systems are proposed to 
update the reference standards to more current editions. Reference 
standards include criteria for establishing the suitability of 
concealed mechanical tube fittings for use with concealed gas piping, 
pipe joints in piping systems, and LP-gas supply connectors. Reference 
standards for oil piping systems and heat producing appliances would 
also be updated under Sec.  3280.706 and Sec.  3280.707. In addition, 
Sec.  3280.705(j) would be revised to require a gas supply connector 
for each dwelling unit of a multi-dwelling unit manufactured home 
designed for gas supply.
    In Sec.  3280.709(a), this proposed rule would remove the language 
requiring manufacturers to leave appliance manufacturer instructions 
attached to appliances. Section 3280.711 currently states that 
``Operating instructions must be provided with each appliance. The 
operating and installation instructions for each appliance must be 
provided with the homeowner's manual.'' The current language in Sec.  
3280.709 causes confusion as to whether it is necessary to ship two 
installation instructions with each home, one with the appliance and 
one with the homeowners' manual. Because all appliance manuals must be 
provided with the homeowner's manual, this proposed rule change 
eliminates potential redundancy for duplicate and unnecessary appliance 
manuals. Furthermore, proposed revisions to Sec.  3280.711 to allow for 
operating instructions requirements to be met through the provision of 
permanent Quick Response (QR) codes would further streamline 
documentation requirements for manufacturers.
    In Sec.  3280.709(g), the proposed rule would ease requirements to 
allow consumers and manufacturers to install any fireplaces and wood 
stoves listed or certified for their intended purpose, instead of 
limiting options to only those specifically listed for manufactured 
homes. Installed fireplaces and wood stoves used for manufactured homes 
are not different than those used for homes regulated by others, so 
this proposed change would allow for greater flexibility and available 
options for both consumers and manufacturers.
    HUD also proposes to delete the prescriptive table of minimum 
coefficient of performance (COP) ratios for electric heat pumps with 
supplemental resistance heat under Sec.  3280.714(a)(1)(iii). These 
heat pumps are only required to meet the minimum federal heating season 
performance factor (HSPF) requirement. Current typical minimum COP 
values already exceed the prescriptive minimum COP values from 1989, so 
this rule change eliminates obsolete minimum standards and aligns the 
MHCSS with current federal minimum efficiency requirements.
    In Sec.  3280.715, the proposed rule change permits supply air 
ducts located within 3 feet of the furnace discharge to be made of less 
fire-resistant material if those ducts are rated to withstand the 
maximum discharge air temperature of the equipment. All supply ducts 
must still be made of galvanized steel, tin-plated steel, or aluminum 
listed as Class 0 (air ducts and air connectors having surface burning 
characteristics of zero) or Class 1 (air ducts and air connectors 
having a flame-spread index of not over 25 without evidence of 
continued progressive combustion and a smoke-developed index of not 
over 50) in accordance with UL 181-2013. Previously, Class 1 ducts had 
to be located at least three (3) feet from the furnace bonnet or 
plenum, and furnace supply plenums had to be constructed of metal that 
extends a minimum of three (3) feet from the heat exchanger measured 
along the centerline of airflow. Manufacturers of Class 1 ducts 
commonly offer products specifically listed for use in manufactured 
homes, so the potential savings of this rule change would be realized 
immediately.

I. Electrical Systems

    The proposed rule would amend the definition for feeder assembly 
under Sec.  3280.802(a)(20) to refer to ``dwelling unit'' instead of 
``manufactured home.'' This change would accommodate the integration of 
multi-dwelling unit manufactured homes. Power supply requirements under 
Sec.  3280.803(a) are clarified to not apply to multi-dwelling unit 
manufactured homes, and National Electric Code references under 
Sec. Sec.  3280.803(k)(3)(ii), 3280.804, and 3280.808(p) are updated to 
reference applicable articles of the National Electrical Code, NFPA 70-
2014 for a more current standard. The code requirements for 
disconnecting means, consisting of a circuit breaker, or switch and 
fuses and accessories, would be streamlined under Sec.  3280.804 and 
clarified to refer to dwelling units instead of manufactured homes. 
MHCSS language for branch circuit requirements under Sec.  3280.805 and 
wiring methods and materials under Sec.  3280.808 are also simplified 
for improved clarity.

J. Revisions to Standards Incorporated by Reference (Reference 
Standards)

    The following table lists the standards incorporated by reference 
(IBRed) that would be revised or added by this proposed rule. Each 
reference standard is preceded with an indicator to identify the type 
of change being made. Reference standards designated ``N'' are new, 
meaning they have not been codified into the MHCSS. Reference standards 
designated ``U'' are being updated, that is HUD is incorporating an 
updated or more recent version of an already codified standard. 
Reference standards designated ``*'' are not new or being updated but 
have already been codified in the MHCSS and are being added to a 
different section from that codified. The sections of the MHCSS that 
would be amended by each modification are also shown on the right of 
the reference standard being added or updated:
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    The Department is interested in receiving comments from the public 
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reduced safety or performance levels for manufactured home occupants.

K. Changes to the Manufactured Home Procedural and Enforcement 
Regulations (24 CFR Part 3282)

    HUD is proposing a single revision to its Manufactured Home 
Procedural and Enforcement Regulations at 24 CFR part 3282. 
Specifically, HUD is proposing to remove paragraph (l) from Sec.  
3282.8. This change would remove ``multifamily homes'' from the 
section's applicability provisions.

L. Changes to the Model Manufactured Home Installation Standards (24 
CFR Part 3285)

    HUD is proposing changes to the Model Manufactured Home 
Installation Standards at 24 CFR part 3285 to revise definitions to 
allow certain specified roof ridge designs without a requirement for 
specific on-site inspections by the Production Inspection Primary 
Inspection Agencies (IPIAs), in those instances where it is to better 
support a type of roof installation that is now common throughout the 
industry and is a time-tested technology. Other proposed changes 
support broader criteria for fireplaces and woodstoves, as well as 
proposed changes to the Construction and Safety Standards for fire 
sprinkler certification and testing requirements, and modifications to 
water supply testing provisions to accommodate more types of piping 
materials. HUD proposes to add language under subpart F--Optional 
Features, to ensure that residential fire sprinkler systems are 
certified and tested on site in accordance with home manufacturer's 
instructions and to ensure that a required listed minimum water supply 
is available for any systems installed. Testing requirements are to be 
consistent with Sec.  3280.612(a) and certified by the installer.
    Proposed revisions to part 3285 also include revised language in 
Sec.  3285.603(d)(3) to support the changes under Sec.  
3280.603(b)(4)(ii) for heat tape or pipe heating cable use.

M. Changes to the Manufactured Home Installation Program (24 CFR Part 
3286)

    HUD is proposing changes to the Manufactured Home Installation 
Program at 24 CFR part 3286 to clarify and ensure that manufacturer 
instructions, alternative designs, and installation instructions are 
provided to purchasers and homeowners. Changes would also ensure that 
licensed installers must receive installation instructions in order to 
properly install the homes. Proposed changes also include clarifying 
the financial damage coverage prerequisites for installer applicants to 
qualify for installation licenses. An irrevocable letter of credit was 
added as an option in place of the surety bond to give installers 
another financial avenue to meet the licensing requirements, while 
still ensuring the same coverage to consumers. Changes will codify what 
has been discovered by the HUD-administered Manufactured Home 
Installation Program as necessary to provide adequate coverage to 
consumers in the case of damage to or loss of a manufactured home 
resulting from installation defects.

III. Incorporation by Reference

    Before HUD issues a final rule, the consensus standards proposed 
for incorporation will be approved by the Director of the Federal 
Register for incorporation by reference in accordance with 5 U.S.C. 
552(a) and 1 CFR part 51. For purposes of this proposed rule, HUD has 
established an electronic reading room which provides links to access 
the consensus standards that would be added or updated by this rule. 
These standards will be available for review during the public comment 
period for this rule. The reading room can be accessed at: www.hud.gov/program_offices/housing/rmra/mhs/readingroom.
    Supplemental descriptions of the standards are provided in the 
following list. In addition, copies of these standards may be obtained 
from the organization that developed the standard. Finally, as 
described in Sec.  3280.4, these standards are available for inspection 
at HUD's Office of Manufactured Housing Programs. Due to security 
measures at the HUD Headquarters building, however, an advance 
appointment to review standards must be scheduled by calling the Office 
of Manufactured Housing Programs 202-708-1112 (this is not a toll-free 
number).
    The following 88 consensus standards for Manufactured Housing are 
proposed for approval for incorporation by reference:
    1. ANSI/AHRI Standard 210/240-2008 with Addenda 1 and 2, Unitary 
Air-Conditioning and Air-Source Heat Pump Equipment. The proposed rule 
would update ANSI/ARI 210/240-89, Unitary Air-Conditioning and Air 
Source Heat Pump Equipment. This standard establishes definitions, 
classifications, test requirements, rating requirements, minimum data 
requirements for published ratings, operating requirements, marking and 
nameplate data, and conformance conditions for Unitary Air-Conditioners 
and Air-Source Unitary Heat Pumps. This standard is available through 
HUD's online reading room.
    2. AAMA 1701.2-12, Voluntary Standard for Utilization in 
Manufactured Housing for Primary Window and Sliding Glass Doors. The 
proposed rule would update AAMA 1701.2-95. This standard sets the 
requirements for primary windows and sliding glass doors used in 
manufactured housing. Window mounted as components in entry doors are 
beyond the scope of this standard. Since building methods and materials 
are expected to undergo continued design innovation, the purpose of 
this standard is to establish reasonable performance standards for all 
present and future methods and materials of construction. This standard 
is available through HUD's online reading room.
    3. AAMA 1702.2-12, Voluntary Standard for Utilization in 
Manufactured Housing for Swinging Exterior Passage Doors. The proposed 
rule would update AAMA 1702.2-95, Voluntary Standard Swinging Exterior 
Passage Door for Utilization in Manufactured Housing. This standard 
sets the requirements for swinging exterior passage doors and 
combination doors used in manufactured housing. Windows used in 
swinging exterior passage doors are components of the door and are thus 
included in this standard. Since building methods and materials are 
expected to undergo continued design innovation, the purpose of this 
standard is to establish reasonable performance standards for all 
present and future methods and materials of construction. This standard 
is available through HUD's online reading room.
    4. AAMA 1704-12, Voluntary Standard Egress Window Systems for 
Utilization in Manufactured Housing. The proposed rule would update 
AAMA Standard 1704-1985. This standard sets the requirements for the 
design, construction, and installation of egress window systems. This 
standard is available through HUD's online reading room.
    5. AAMA/WDMA/CSA 101/I.S.2/A440-17, North American Fenestration 
Standard/Specification for Windows, Doors, and Skylights. The proposed 
rule would update AAMA/WDMA/CSA 101/I.S.2/A440-08. The MHCC originally 
recommended updating this standard to the 2011 version; however, more 
recently the MHCC submitted another recommendation to update this 
standard to the 2017 version. HUD proposes to update this standard to 
the 2017 version as most recently approved by the MHCC, as this version 
is already

[[Page 43133]]

referenced in HUD's industry-wide alternative construction approval for 
doors. Incorporating the more recently recommended version will 
eliminate the need for the industry-wide alternative construction 
approvals for both doors and windows that address pandemic-related 
supply chain shortages. This standard establishes material-neutral, 
minimum, and optional performance requirements for windows, doors, 
secondary storm products, tubular daylighting devices, roof windows, 
and unit skylights. The specification concerns itself with the 
determination of performance grade, design pressure, and related 
performance ratings. This standard is available through HUD's online 
reading room.
    6. ANSI/AHA A135.4-2012, Basic Hardboard. The proposed rule would 
update ANSI/AHA A135.4-1995. This standard covers requirements and test 
methods for water resistance, thickness swelling, modulus of rupture, 
tensile strength, surface finish, dimensions, squareness, edge 
straightness, and moisture content of five classes of basic hardboard. 
This standard requires test methods determined by the ASTM, 
International where appropriate and provides methods of identifying 
hardboard that is compliant. This standard is available through HUD's 
online reading room.
    7. ANSI/AHA A135.5-2012, Prefinished Hardboard Paneling. The 
proposed rule would update ANSI/AHA A135.5-1995. This standard covers 
requirements and methods of testing for the dimensions, squareness, 
edge straightness, and moisture content of prefinished hardboard 
paneling and for the finish of the paneling. Methods of identifying 
products which conform to ANSI/AHA A135.5 are included. This standard 
is available through HUD's online reading room.
    8. ANSI/AHA A135.6-2012, Hardboard Siding. The proposed rule would 
update ANSI/AHA A135.6-1998. This standard sets requirements and 
methods of testing for the dimensions, straightness, squareness, 
physical properties, and surface characteristics of engineered wood 
siding at the time of manufacture. This standard is available through 
HUD's online reading room.
    9. AISC 360-10, Specifications for Structural Steel Buildings. The 
proposed rule would update AISC-S335, 1989, Specification for 
Structural Steel Buildings--Allowable Stress Design and Plastic Design 
(except for the following parts of this standard which are specifically 
excluded from use: 1.3.3, 1.3.4, 1.3.5, 1.3.6, 1.4.6, 1.5.1.5, 1.5.5, 
1.6, 1.7, 1.8, 1.9, 1.10.4 through 1.10.7, 1.10.9, 1.11, 1.13, 1.14.5, 
1.17.7 through 1.17.9, 1.19.1, 1.19.3, 1.20, 1.21, 1.23.7, 1.24, 1.25.1 
through 1.25.5, 1.26.4, 2.3, 2.4, 2.8 through 2.10), June 1, 1989. This 
specification provides the generally applicable requirements for the 
design and construction of structural steel buildings and other 
structures. This standard is available through HUD's online reading 
room.
    10. AISI S100-12, North American Specification for the Design of 
Cold-Formed Steel Structural Members. The proposed rule would update 
AISI, Specification for the Design of Cold-Formed Steel Structural 
Members, 1996. This specification provides the general applicable 
requirements for the design of cold-formed steel structural members 
used in North America. This standard is available through HUD's online 
reading room.
    11. ANSI A208.1-2009, Particleboard. The proposed rule would update 
ANSI A208.1-1999. This standard sets forth requirements and test 
methods for dimensional tolerances, physical and mechanical properties, 
and formaldehyde emissions for particleboard. Methods of identifying 
products conforming to the standard are specified. This standard is 
available through HUD's online reading room.
    12. ANSI LC 1-2014, Fuel Gas Piping Systems Using Corrugated 
Stainless Steel Tubing. The proposed rule would update ANSI/IAS LC 1-
1997. This standard provides the general applicable requirements for 
the installation of natural and propane gas piping systems using 
corrugated stainless steel tubing in residential, commercial, or 
industrial buildings. This includes requirements for the installation 
of corrugated stainless steel piping systems in which portions of the 
piping are exposed to the outdoors as required to make connections to 
outdoor gas meters or to outdoor gas appliances, which are attached to, 
mounted on, or located near the building structure. This standard is 
available through HUD's online reading room.
    13. ANSI Z21.1-2016, Household Cooking Gas Appliances. The proposed 
rule would update ANSI Z21.1-2000. This standard specifies guidelines 
for the newly produced household cooking gas appliances constructed 
entirely of new, unused parts and materials. These appliances may be 
floor-supported or built-in. This standard is available through HUD's 
online reading room.
    14. ANSI Z21.5.1-2015, Gas Clothes Dryers Volume 1, Type 1 Clothes 
Dryers. The proposed rule would update ANSI Z21.51.1-1999, Gas Clothes 
Dryers Volume 1, Type 1 Clothes Dryers, with Addendum z21.5.1a-1999. 
This standard specifies guidelines for newly produced Type 1 clothes 
dryers constructed entirely of new, unused parts and materials for use 
with natural gas, manufactured gas, mixed gas, propane gas, LP gas-air 
mixtures, and for mobile home installation. This standard is available 
through HUD's online reading room.
    15. ANSI Z21.10.1-2014, Gas Water Heaters Volume 1, Storage Water 
Heaters with Input Ratings of 75,000 BTU per hour or Less. The proposed 
rule would update ANSI Z21.10.1-1998, Gas Water Heaters--Volume 1, 
Storage Water Heaters with Input Ratings of 75,000 BTU per hour or 
Less, with Addendum Z21.10.1a-2000. This standard specifies guidelines 
for newly produced, automatic storage water heaters having input 
ratings of 75,000 Btu/hr (21,980 W) or less, hereinafter referred to as 
water heaters or appliances, constructed entirely of new, unused parts 
and materials. This standard is available through HUD's online reading 
room.
    16. ANSI Z21.10.3-2014 Gas-fired Water Heaters Volume 3, Storage 
Water Heaters with Input Ratings Above 75,000 BTU per Hour, Circulating 
and Instantaneous. This proposed rule would add this standard for 
incorporation by reference. This standard specifies guidelines for 
newly produced, large automatic storage water heaters having input 
ratings about 75,000 Btu/hr (21,980 W), instantaneous water heaters, 
and circulating water heaters including booster water heaters, 
constructed entirely of new, unused parts and materials. This standard 
is available through HUD's online reading room.
    17. ANSI Z21.15-2009, Manually Operated Gas Valves for Appliances, 
Appliance Connector Valves and Hose End Valves. The proposed rule would 
update ANSI Z21.15-1997. This standard applies to manually operated gas 
valves not exceeding 4 inch (102 mm) pipe size, and pilot shut-off 
devices. This standard is available through HUD's online reading room.
    18. ANSI Z21.19-2014, Refrigerators Using Gas Fuel. The proposed 
rule would update ANSI Z21.19-1990, with Addendum ANSI Z21 19a-1992 and 
ANSI Z21 19b-1995. This standard specifies guidelines for gas-fired 
refrigerators having refrigerated spaces for storage of foods, storage 
of foods and making ice, storage of frozen foods and making ice, or 
storage of foods and the storage of frozen foods and making ice. The 
standard applies to newly produced refrigerators constructed entirely 
of new, unused parts and materials. This

[[Page 43134]]

standard is available through HUD's online reading room.
    19. ANSI Z21.20-2014, Automatic Gas Ignitions Systems and 
Components. This proposed rule would update ANSI Z21.20 with Addendum 
Z21.20a-2000. This standard specifies guidelines for newly produced 
automatic gas ignition systems and components constructed entirely of 
new, unused parts and materials. This standard is available through 
HUD's online reading room.
    20. ANSI Z21.21-2012, Automatic Valves for Gas Appliances. This 
proposed rule would update ANZI Z21.21-2000. This standard specifies 
guidelines for newly produced automatic valves constructed entirely of 
new, unused parts and materials. These valves may be individual 
automatic valves or valves utilized as parts of automatic gas ignition 
systems. The standard also applies to commercial/industrial safety 
shutoff valves, also referred to as C/I valves. This standard is 
available through HUD's online reading room.
    21. ANSI Z21.23-2000 (R2005), Gas Appliance Thermostats with ANSI 
Z21.23a-2003 (Addenda1) and ANSI 21.23b-2005 (Addenda 2). This proposed 
rule would update ANSI Z21.23-1993. This standard specifies guidelines 
for newly produced gas appliance thermostats of the integral gas valve 
type having a maximum operating gas pressure of \1/2\ psi (3.5 kPa) or 
electric type. This standard is available through HUD's online reading 
room.
    22. ANSI Z21.24-2006 (R2011), Connectors for Gas Appliances. This 
proposed rule would update ANSI Z21.24-1997/CGA 6.10-M97, Connectors 
for Gas Appliances, and remove the reference to the Compressed Gas 
Association. This standard specifies guidelines for newly produced gas 
appliance connectors constructed entirely of new unused parts and 
materials, having nominal internal diameters of \1/4\, \3/8\, \1/2\, 
\5/8\, \3/4\ and 1 inch, and having fittings at both ends provided with 
taper pipe threads for connection to a gas appliance and to house 
piping. Guidelines cover assembled appliance connectors not exceeding a 
nominal length of six (6) feet (1.83 meters). Connectors listed under 
this standard are intended for use with gas appliances that are not 
frequently moved after installation. This standard is available through 
HUD's online reading room.
    23. ANSI Z21.40.1-1996, Gas Fired, Heat Activated Air Conditioning 
and Heat Pump Appliances. This proposed rule would correct the title of 
this standard from ANSI Z21.40.1-1996/CGA 2.91-M96, Gas-Fired, Heat 
Activated Air Conditioning and Heat Pump Appliances, to remove the 
reference to the Compressed Gas Association. This standard has already 
been approved for incorporation by reference for Sec. Sec.  3280.703 
and 3280.714(a) by the Director of the Office of the Federal Register 
and is unchanged. This standard is available through HUD's online 
reading room.
    24. ANSI Z21.47-2012, Gas Fired Central Furnaces (Except Direct 
Vent Systems). The proposed rule would update ANSI Z21.47-1990 with 
Addendum Z21.4a-1990 and Z21.47b-1992, Gas-Fired Central Furnaces 
(Except Direct Vent System Central Furnaces). The updated standard 
contains new and revised requirements for documentation and testing and 
sets forth basic standards for the safe operation, substantial and 
durable construction, and acceptable performance of gas-fired central 
furnaces. This standard has been previously approved for incorporation 
by reference at 10 CFR 431.75. This standard is available through HUD's 
online reading room.
    25. ANSI Z21.75-2007, Connectors for Outdoor Gas Appliances and 
Manufactured Homes. This proposed rule would add this standard for 
incorporation by reference. This standard specifies guidelines for 
newly produced assembled connectors constructed entirely of new, unused 
parts and materials. This standard is available through HUD's online 
reading room.
    26. ANSI Z97.1-2009, Standard for Safety Glazing Materials used in 
Buildings--Safety Performance Specifications and Methods of Test. The 
proposed rule would update ANSI Z97.1-2004, Standard for Safety Glazing 
Materials used in Buildings--Safety Performance Specifications and 
Methods of Test, copyright 2004. This standard establishes the 
specifications and methods of test for the safety properties of safety 
glazing materials (glazing materials designed to promote safety and to 
reduce or minimize the likelihood of cutting and piercing injuries when 
the glazing materials are broken by human contact) as used for all 
building and architectural purposes. The updated standard adds 
modifications and new material that add clarity of purpose, intent and 
procedures. Specifically, sections have been rewritten and new sections 
added to provide additional assurance that the intended safe-break 
characteristics have been achieved before a test specimen may be 
declared compliant. This reference standard impacts the HUD Code to 
define safety glazing materials used in glass and glazed openings such 
as windows and sliding glass doors, and hazardous locations requiring 
safety glazing. The scope of this standard is available through HUD's 
online reading room.
    27. APA D510C-2012, Panel Design Specification. The proposed rule 
would replace APA D410A-2004, Panel Design Specification. This standard 
specifies guidelines for newly produced assembled connectors 
constructed entirely of new, unused parts and materials. This standard 
is available through HUD's online reading room.
    28. APA E30V-2011, Engineered Wood Construction Guide. The proposed 
rule would update APA E30R, Engineered Wood Construction Guide, revised 
January 2001. This standard specifies guidelines for the use of 
engineered wood for residential and commercial construction. It 
contains information on APA performance rated panels, glulam, I-joists, 
structural composite lumber, specification practices, floor, wall and 
roof systems, diaphragms and shear walls, fire-rated systems, and 
methods of finishing. This standard is available through HUD's online 
reading room.
    29. APA H815G-2013, Design & Fabrication of All-Plywood Beams. The 
proposed rule would update APA H815E-1995 (PDS Supplement #5), Design 
and Fabrication of All-Plywood Beams. This standard presents 
recommended methods for the design and fabrication of staple-glued all-
plywood beams. Allowable stresses and other design criteria are 
provided, as well as guidelines for beam fabrication. This standard is 
available through HUD's online reading room.
    30. APA PS 1-09, Structural Plywood (with Typical APA Trademarks). 
This proposed rule would add this standard for incorporation by 
reference. This standard specifies guidelines for producing, marketing, 
and specifying plywood for construction and industrial uses. This 
standard is available through HUD's online reading room.
    31. APA S811P-2013, Design & Fabrication of Plywood Curved Panels. 
The proposed rule would update APA S811M-1990 (PDS Supplement 1), 
Design and Fabrication of Plywood Curved Panels. This specification 
presents the recommended method for the design and fabrication of 
curved plywood roof panels spanning between load-bearing supports so 
that the stresses developed act circumferentially around the curve. 
This standard is available through HUD's online reading room.
    32. APA S812S-2013, Design & Fabrication of Glued Plywood Lumber

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Beams. The proposed rule would update APA S812R-1992, Design and 
Fabrication of Glued Plywood-Lumber Beams, revised November 1998, 
Supplement #2, July 1992. This specification presents the recommended 
method for the design and fabrication of glued plywood and lumber 
beams. This standard is available through HUD's online reading room.
    33. APA U813M-2012, Design & Fabrication of Plywood-Stressed Skin 
Panels. The proposed rule would update APA U813L-1992, Design and 
Fabrication of Plywood Stressed-Skin Panels, revised April 1996, 
Supplement #3, August 1992. This specification presents the recommended 
method for the design and fabrication of glued plywood stressed-skin 
panels. This standard is available through HUD's online reading room.
    34. APA U814J-2012, Design & Fabrication of Plywood Sandwich 
Panels. The proposed rule would update APA U 814H, Design and 
Fabrication of Plywood, Sandwiched Panels, revised September 1993, 
Supplement #4, March 1990. This specification presents the recommended 
method for the design and fabrication of flat plywood sandwich panels. 
This standard is available through HUD's online reading room.
    35. APA Y510-98, Plywood Design. This proposed rule would add this 
standard for incorporation by reference. This specification presents 
section properties, recommended design stresses, and design methods for 
plywood when used in building construction and related structures. This 
standard is available through HUD's online reading room.
    36. ASCE/SEI 7-05, Minimum Design Loads for Buildings and Other 
Structures. The proposed rule would update ANSI/ASCE 7-88, Minimum 
Design Loads for Buildings and Other Structures. This standard 
describes the means for determining design loads including dead, live, 
soil, flood, tsunami, snow, rain, atmospheric ice, seismic, and wind 
loads and their combinations for general structural design. This 
standard is available through HUD's online reading room.
    37. ANSI/ASHRAE Standard 62.2-2013, Ventilation and Acceptable 
Indoor Air Quality in Low-Rise Residential Buildings. The proposed rule 
would update ANSI/ASHRAE 62.2-2010, Ventilation and Acceptable Indoor 
Air Quality in Low-Rise Residential Buildings, copyright 2010. This 
standard describes the minimum requirements to achieve acceptable 
indoor air quality via dwelling-unit ventilation, local demand-
controlled exhaust, and source control. This standard is available 
through HUD's online reading room.
    38. ANSI/ASME B1.20.1-2013, Pipe Threads, General Purpose (Inch). 
The proposed rule would update ASME B1.20.1-1983, Pipe Threads, General 
Purpose (Inch). This standard establishes specifications for wrought 
copper and wrought copper alloy, solder-joint, seamless fittings, 
designed for use with seamless copper tube conforming to ASTM B88 
(water and general plumbing systems), B280 (air conditioning and 
refrigeration service), and B819 (medical gas systems), as well as 
fittings intended to be assembled with soldering materials conforming 
to ASTM B32, brazing materials conforming to AWS A5.8, or with tapered 
pipe thread conforming to ASME B1.20.1. This standard is aligned with 
ASME B16.18, which covers cast copper alloy pressure fittings, and 
provides requirements for fitting ends suitable for soldering. This 
standard covers pressure-temperature ratings, abbreviations for end 
connections, size and method of designating openings of fittings, 
marking, material, dimensions and tolerances, and tests. This standard 
is available through HUD's online reading room.
    39. ANSI/ASME B36.10-2004, Welding and Seamless Wrought Steel Pipe. 
The proposed rule would update ASME B36.10-1979, Welding and Seamless 
Wrought Steel Pipe. This standard covers the standardization of 
dimensions of welded and seamless wrought steel pipe for high or low 
temperatures and pressures. The word pipe is used, as distinguished 
from tube, to apply to tubular products of dimensions commonly used for 
pipeline and piping systems. Pipe NPS 12 (DN 300) and smaller have 
outside diameters numerically larger than their corresponding sizes. In 
contrast, the outside diameters of tubes are numerically identical to 
the size number for all sizes. This standard is available through HUD's 
online reading room.
    40. ASTM A53/A53M-12, Standard Specification for Pipe, Steel, Black 
and Hot-Dipped. The proposed rule would update ASTM A53-93, Standard 
Specification for Pipe, Steel, Black and Hot-Dipped, Zinc Coated, 
Welded and Seamless. This specification covers seamless and welded 
black and hot-dipped galvanized steel pipe in NPS \1/8\ to NPS 26. The 
steel categorized in this standard must be open-hearth, basic-oxygen, 
or electric-furnace processed, and must have specified chemical 
requirements. Testing requirements for seamless or welded tubing are 
provided in this standard. This standard is available through HUD's 
online reading room.
    41. ASTM B42-10, Standard Specification for Seamless Copper Pipe, 
Standard Sizes. The proposed rule would update ASTM B42-93, Standard 
Specification for Seamless Copper Pipe, Standard Sizes. This 
specification establishes the requirements for seamless copper pipe in 
all nominal standard pipe sizes, both regular and extra-strong, 
suitable for use in plumbing, boiler feed lines, and for similar 
purposes. This standard is available through HUD's online reading room.
    42. ASTM B88-14, Standard Specification for Seamless Copper Water 
Tube. The proposed rule would update ASTM B88-93, Standard 
Specification for Seamless Copper Water Tube. The specification covers 
seamless copper water tube suitable for general plumbing, applications 
for the conveyance of fluids, and use with solder, flared, or 
compression-type fittings. This standard is available through HUD's 
online reading room.
    43. ASTM B251-10, Standard Specification for General Requirements 
for Wrought Seamless Copper and Copper-Alloy Tube. The proposed rule 
would update ASTM B251-93, Standard Specification for General 
Requirements for Wrought Seamless Copper and Copper-Alloy Tube. This 
specification sets forth the general requirements for wrought seamless 
copper and copper-alloy tube. This standard is available through HUD's 
online reading room.
    44. ASTM B280-13, Standard Specification for Seamless Copper Tube 
for Air Conditioning and Refrigeration Field Service. The proposed rule 
would update ASTM B280-95a, Standard Specification for Seamless Copper 
Tube for Air Conditioning and Refrigeration Field Service. This 
specification sets forth the requirements for seamless copper tube 
intended for use in the connection, repairs, or alterations of air 
conditioning or refrigeration units in the field. This standard is 
available through HUD's online reading room.
    45. ASTM C1396/C1396M-14, Standard Specification for Gypsum Board. 
The proposed rule would update ASTM C 36/C 36M-99, Standard 
Specification for Gypsum Wallboard, 1999. This specification covers 
gypsum boards which include the following: gypsum wallboard for use on 
walls, ceilings, or partitions and that affords a surface suitable to 
receive decoration; predecorated gypsum board for use as the finished 
surfacing for walls, ceilings, or partitions; gypsum backing board, 
coreboard, and shaftliner board for use as a base in multilayer systems 
or as a

[[Page 43136]]

gypsum stud or core in semisolid or solid gypsum board partitions, or 
in shaft wall assemblies; water-resistant gypsum backing board to be 
used as a base for the application of ceramic or plastic tile on walls 
or ceilings; exterior gypsum soffit board for exterior soffits and 
carport ceilings that are completely protected from contact with liquid 
water; gypsum sheathing board for use as sheathing on buildings; gypsum 
base for veneer plaster; gypsum lath for use as a base for gypsum 
plaster application; and gypsum ceiling board for interior ceilings and 
walls. This standard is available through HUD's online reading room.
    46. ASTM D3679-09a, Standard Specification for Rigid Poly (Vinyl 
Chloride) (PVC) Siding. This proposed rule would add this standard for 
incorporation by reference. This specification establishes requirements 
and test methods for the materials, dimensions, warp, shrinkage, impact 
strength, expansion, appearance, and windload resistance of extruded 
single-wall siding manufactured from rigid (unplasticized) PVC 
compound. This standard is available through HUD's online reading room.
    47. ASTM D4442-07, Standard Test Methods for Direct Moisture 
Content Measurement of Wood & Wood Base Materials. The proposed rule 
would update ASTM D4442-92 (Reapproved 1997), Standard Test Methods for 
Direct Moisture Content Measurement of Wood and Wood-Base Materials. 
These test methods cover the determination of the moisture content of 
wood, veneer, and other wood-based materials, including those that 
contain adhesives and chemical additives. This standard is available 
through HUD's online reading room.
    48. ASTM D4444-13, Standard Test Methods for Use and Calibration of 
Hand-Held Moisture Meters. The proposed rule would update ASTM D4444-
92, Standard Test Methods for Use and Calibration of Hand-Held Moisture 
Meters. These test methods cover the measurement of moisture content of 
solid wood products, including those containing additives (that is, 
chemicals or adhesives) for laboratory standardization and calibration 
of hand-held moisture meters. This standard is available through HUD's 
online reading room.
    49. ASTM D4756-06, Standard Practice for Installation of Rigid Poly 
(Vinyl Chloride) (PVC) Siding and Soffit. This proposed rule would add 
this standard for incorporation by reference. This standard covers the 
minimum requirements for and the methods of installation of rigid vinyl 
siding, soffits, and accessories on the exterior wall and soffit areas 
of buildings. This standard also covers aspects of installation 
relating to effectiveness and durability in service. This standard is 
available through HUD's online reading room.
    50. ASTM D7254-07, Standard Specification for Polypropylene (PP) 
Siding. The proposed rule would add this standard for incorporation by 
reference. This specification establishes requirements and test methods 
for materials, impact strength, appearance, surface flame spread, and 
windload resistance of siding products manufactured from polypropylene 
material. This standard is available through HUD's online reading room.
    51. ASTM E90-09, Standard Test Method for Laboratory Measurement of 
Airborne Sound Transmission Loss of Building Partitions and Elements. 
This proposed rule would add this standard for incorporation by 
reference. This test method covers the laboratory measurement of 
airborne sound transmission loss of building partitions such as walls 
of all kinds, operable partitions, floor-ceiling assemblies, doors, 
windows, roofs, panels, and other space-dividing elements. This 
standard is available through HUD's online reading room.
    52. ASTM E96/E96M-13, Standard Test Methods for Water Vapor 
Transmission of Materials. The proposed rule would update ASTM E96-95, 
Standard Test Methods for Water Vapor Transmission of Materials. These 
test methods cover the determination of water vapor transmission rate 
of materials, such as, but not limited to, paper, plastic films, other 
sheet materials, coatings, foams, fiberboards, gypsum and plaster 
products, wood products, and plastics. This standard is available 
through HUD's online reading room.
    53. ASTM E119-14, Standard Test Method for Fire Tests of Building 
Construction and Materials. The proposed rule would update ASTM E119-
05, Standard Test Method for Fire Tests of Building Construction and 
Materials. This standard contemplates fire test response criteria which 
is essential for fire safety. Testing per this standard establishes the 
duration for which a specific material or installation can contain a 
fire. This information helps to show insurance carriers, contractors, 
and other parties what might reasonably be expected in the event of a 
fire emergency. This standard is available through HUD's online reading 
room.
    54. ASTM E492-09, Standard Test Method for Laboratory Measurement 
of Impact Sound Transmission Through Floor-Ceiling Assemblies Using the 
Tapping Machine. This proposed rule would add this standard for 
incorporation by reference. This test method covers the laboratory 
measurement of impact sound transmission of floor-ceiling assemblies 
using a standardized tapping machine. This standard is available 
through HUD's online reading room.
    55. ASTM E814-13, Standard Test Method for Fire Tests of 
Penetration Firestop Systems. This proposed rule would add this 
standard for incorporation by reference. This standard is used to 
measure and describe the response of materials, products, or assemblies 
to heat and flame under controlled conditions. This standard 
contemplates fire testing that evaluates a firestop under fire 
conditions to determine if it will gain firestop status. It addresses 
areas of building construction where firestop systems are necessary to 
contain fire from spreading from one area to another around penetrating 
items. This standard is available through HUD's online reading room.
    56. AWC (formerly under AFPA), 2012 Design Values for Joists & 
Rafters. The proposed rule updates AFPA, Design Values for Joists and 
Rafters 1992. This standard provides design values such as bending, 
compression, and modulus of elasticity for joists and rafters, and 
tabulates allowable bending (Fb) and modulus of elasticity (E) design 
values for visually graded and mechanically graded dimension lumber. 
This standard is available through HUD's online reading room.
    57. AWC NDS-2015 (formerly under AFPA), National Design 
Specifications for Wood Construction, with Supplement, Design for Wood 
Construction. The proposed rule updates ANSI/AFPA NDS-2001, National 
Design Specifications for Wood Construction, 2001 Edition, with 
Supplement, Design Values for Wood Construction, November 30, 2001. 
This specification defines the methods to be followed in structural 
design with the following wood products: visually graded lumber, 
mechanically graded lumber, structural glued laminated timber, timber 
piles, timber poles, prefabricated wood I-joists, structural composite 
lumber, wood structural panels, and cross-laminated timber. It also 
defines the practice to be followed in the design and fabrication of 
single and multiple fastener connections using the fasteners described 
within it. This standard is available through HUD's online reading 
room.
    58. AWC PS-20-70-2012 (formerly under AFPA), Span Tables for Joists 
&

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Rafters. The proposed rule updates AFPA PS-20-70, Span Tables for 
Joists and Rafters, 1993. This standard provides a simplified system 
for determining allowable joist and rafter spans for typical loads 
encountered in one- and two-family dwellings and is referenced in the 
2012 International Building Code. This standard is available through 
HUD's online reading room.
    59. ANSI/HPVA HP-1-2009, American National Standard for Hardwood 
and Decorative Plywood. The proposed rule would update ANSI/HPVA HP-1-
1994, American National Standard for Hardwood and Decorative Plywood. 
This standard sets forth the specific requirements for all face, back, 
and inner ply grades as well as formaldehyde emissions, moisture 
content, tolerances, sanding, and grade marking for hardwood and 
decorative plywood. This standard is available through HUD's online 
reading room.
    60. IAPMO TSC 9-2003, Standard for Gas Supply Connectors for 
Manufactured Homes. The proposed rule would update IAPMO TSC 9-97, 
Standard for Gas Supply Connectors for Manufactured Homes. This 
standard applies to connectors for outdoor use consisting of flexible 
tubing depending on all-metal construction for gas tightness and having 
a fitting at each end provided with tapered pipe threads for connecting 
manufactured home gas piping to a manufactured home lot gas outlet or a 
crossover in multiple unit manufactured homes. This standard is 
available through HUD's online reading room.
    61. ISO/IEC 17065-2012, Conformity Assessment--Requirements for 
Bodies Certifying Products, Processes and Services. This proposed rule 
would add this standard for incorporation by reference. This 
International Standard contains requirements for the competence, 
consistent operation and impartiality of product, process and service 
certification bodies. This standard is available through HUD's online 
reading room.
    62. ESR 1539-2014, ICC-ES Evaluation Report, Power Driven Staples 
and Nails. The proposed rule would update NER-272, National Evaluation 
Report, Power Driven Staples, Nails, and Allied Fasteners for Use in 
All Types of Building Construction, Reissued September 1, 1997. This 
document contains design values and allowable load tables for 
individual nails and staples as well as for nailed or stapled shear 
walls that may not be listed in the Uniform Building Code. This 
standard is available through HUD's online reading room.
    63. NFPA 13D-2010, Standard for the Installation of Sprinkler 
Systems in One and Two Family Dwellings and Manufactured Homes. This 
proposed rule would add this standard for incorporation by reference. 
This standard covers the design, installation, and maintenance of 
automatic sprinkler systems for protection against the fire hazards in 
one- and two-family dwellings and manufactured homes. This standard is 
available through HUD's online reading room.
    64. NFPA 31-2011, Installation of Oil-Burning Equipment. The 
proposed rule would update NFPA 31, Standard for the Installation of 
Oil-Burning Equipment, 2001. This standard sets forth the requirements 
for the safe, efficient design and installation of heating appliances 
that use a liquid fuel, typically No. 2 heating oil, but also lighter 
fuels, such as kerosene and diesel fuel, and heavier fuels, such as No. 
4 fuel oil. This standard is available through HUD's online reading 
room.
    65. NFPA 54/ANSI Z223.1-2015, National Fuel Gas Code. The proposed 
rule would update NFPA 54-2002, National Fuel Gas Code. This standard 
provides minimum safety requirements for the design and installation of 
fuel gas piping systems in homes and other buildings. This standard is 
available through HUD's online reading room.
    66. NFPA 58-2014, Standard for the Storage and Handling of 
Liquefied Petroleum Gases. The proposed rule would update NFPA 58, 
Liquefied Petroleum Gas Code, 2001 Edition. This standard sets forth 
the requirements for safe liquified petroleum gas storage, handling, 
transportation, and use. This standard mitigates risks and ensures safe 
installations, to prevent failures, leaks, and tampering that could 
lead to fires and explosions. This standard is available through HUD's 
online reading room.
    67. NFPA 70-2014, National Electric Code. This proposed rule would 
update NFPA No. 70-2005. This standard sets forth the requirements for 
safe electrical design, installation, and inspection to protect people 
and property from electrical hazards. The purpose of this Code is the 
practical safeguarding of persons and property from hazards arising 
from the use of electricity. This standard is available through HUD's 
online reading room.
    68. NFPA 90B-2015, Warm Air Heating and Air Conditioning Systems. 
The proposed rule would update NFPA 90B, Warm Air Heating and Air 
Conditioning Systems, 1996 Edition. This standard sets forth the 
requirements that cover the construction, installation, operation, and 
maintenance of systems for warm air heating and air conditioning, 
including filters, ducts, and related equipment to protect life and 
property from fire, smoke, and gases resulting from fire or from 
conditions having manifestations similar to fire. This standard is 
available through HUD's online reading room.
    69. SAE J533b-2007, Flares for Tubing. The proposed rule would 
update SAE-J533b-1992, Flares for Tubing. This standard covers 
specifications and performance requirements for 37[deg] and 45[deg] 
single and double flares for tube ends intended for use with SAE J512, 
SAE J513, SAE J514, and ISO 8434-2 connectors. This standard is 
available through HUD's online reading room.
    70. TPI 1-2007, National Design Standard for Metal Plate Connected 
Wood Truss Construction (formerly TPI-85). The proposed rule would 
update TPI-85, Design Specifications for Metal Plate and Wood Connected 
Trusses. This standard establishes minimum requirements for the design 
and construction of metal-plate-connected wood Trusses. This standard 
describes the materials used in a Truss, both lumber and steel, and 
design procedures for Truss members and joints. This standard is 
available through HUD's online reading room.
    71. UL 103-2010, Chimneys, Factory Built Residential Type & 
Building Heating Appliance. The proposed rule would update UL 103-1995, 
with 1999 revisions, Factory-Built Chimneys for Residential Type and 
Building Heating Appliances, Ninth Edition. This standard sets forth 
the requirements for factory-built chimneys intended for venting gas, 
liquid, and solid-fuel fired residential-type appliances and building 
heating appliances in which the maximum continuous flue-gas outlet 
temperatures do not exceed 1,000 [deg]F (538 [deg]C). This standard is 
available through HUD's online reading room.
    72. UL 109-2005, Tube Fittings for Flammable and Combustible 
Fluids, Refrigeration Service, and Marine Use. The proposed rule would 
update UL 109-1997, with 2001 revisions, Tube Fittings for Flammable 
and Combustible Fluids, Refrigeration Service, and Marine Use, Sixth 
Edition. This standard sets forth the requirements that apply to the 
performance in flame-exposure tests of flame-resistant fabrics of 
natural, synthetic or combination of natural and synthetic fibers, or 
plastic films intended for such use as tents, awnings, draperies or 
decorations. This standard is available through HUD's online reading 
room.

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    73. UL 174-2004, Household Electric Storage Tanks Water Heaters. 
The proposed rule would update UL 174-1996, with 1997 revisions, 
Household Electric Storage Tanks Water Heaters, Tenth Edition. This 
standard sets forth the requirements for household electric storage 
tank and small capacity storage tank water heaters that are rated no 
more than 600 volts and 12 kilowatts and are to be installed in 
accordance with the NFPA 70 and with model plumbing and mechanical 
codes. This standard is available through HUD's online reading room.
    74. UL 181-2013, Factory Made Air Ducts & Connectors. The proposed 
rule would update UL 181 Factory Made Air Ducts and Connectors, Ninth 
Edition, April 4, 1996, with revisions through May 15, 2003. This 
standard sets forth the requirements that apply to materials for the 
fabrication of air duct and air connector systems for use in accordance 
with the International Mechanical Code, International Residential Code, 
and Uniform Mechanical Code, Standards of the National Fire Protection 
Association for the Installation of Air-Conditioning and Ventilating 
Systems, NFPA No. 90A, and the Installation of Warm Air Heating and 
Air-Conditioning Systems, NFPA No. 90B. This standard is available 
through HUD's online reading room.
    75. UL 181A-2013, Closure Systems for Use with Rigid Air Ducts and 
Air Connectors. The proposed rule would update UL 181A, 1994, with 1998 
revisions, Standard for Safety Closure Systems for Use with Rigid Air 
Ducts and Air Connectors, Second Edition. This standard sets forth the 
requirements that cover closure systems for use with factory-made rigid 
air ducts or air connectors complying with the Standard for Factory-
Made Air Ducts and Air Connectors, UL 181. Closure systems consist of 
pressure sensitive tapes, heat-activated tapes, and mastics. This 
standard is available through HUD's online reading room.
    76. UL 263-2014, Fire Tests of Building Construction Materials. 
This proposed rule would add this standard for incorporation by 
reference. These fire tests are applicable to assemblies of masonry 
units and composite assemblies of structural materials for buildings, 
including bearing and other walls and partitions, columns, girders, 
beams, slabs, and composite slab and beam assemblies for floors and 
roofs. They are also applicable to other assemblies and structural 
units that constitute permanent integral parts of a finishing building. 
This standard is available through HUD's online reading room.
    77. UL 268-1999, Smoke Detectors for Fire Protective Signaling 
Systems. This standard has already been approved for incorporation by 
reference for Sec.  3280.209(a) by the Director of the Office of the 
Federal Register and is unchanged but being proposed for incorporation 
by reference into Sec.  3280.703. This standard is available through 
HUD's online reading room.
    78. UL 307A-2009, Liquid Fuel Burning Heating Appliances for 
Manufactured Homes & Recreational Vehicles. The proposed rule would 
update UL 307A-1995, Liquid Fuel Burning Heating Appliances for 
Manufactured Homes and Recreational Vehicles, Seventh Edition, with 
1997 revisions. This standard sets forth requirements that apply to 
certain types of liquid fuel-burning appliances intended for 
installation in manufactured homes and recreational vehicles, including 
travel trailers, camping trailers, truck campers, motor homes, and park 
trailers. This standard is available through HUD's online reading room.
    79. UL 307B-2009, Gas Burning Appliances for Manufactured Homes & 
Recreational Vehicles. The proposed rule would update UL 307B-1995, Gas 
Burning Heating Appliances for Manufactured Homes and Recreational 
Vehicles, Fourth Edition, with 1998 revisions. This standard sets forth 
the requirements that apply to the certain gas fuel-burning heating 
appliances. This standard is available through HUD's online reading 
room.
    80. UL 441-2010, Gas Vents. The proposed rule would update UL 441, 
1996 with 1999 revisions, Gas Vents, Ninth Edition. This standard sets 
forth the requirements that cover Types B and BW gas vents and Types B 
and BW gas vent roof jacks intended for venting gas appliances equipped 
with draft hoods to burn only gas. This standard is available through 
HUD's online reading room.
    81. UL 499-2014, Standard for Electric Heating Appliances, 
Fourteenth Edition. This proposed rule would add this standard for 
incorporation by reference. These requirements cover heating appliances 
rated at 600 V or less for use in unclassified locations in accordance 
with the National Electrical Code (NEC), NFPA 70-2014. This standard is 
available through HUD's online reading room.
    82. UL 569-2013, Pigtails and Flexible Hose Connectors for LP Gas. 
The proposed rule would update UL 569, 1995 with 2001 revisions, 
Pigtails and Flexible Hose Connectors for LP-Gas, Seventh Edition. This 
standard sets forth the requirements that cover pigtails and flexible 
hose connectors used in the assembly of fuel-supply systems and 
intended for liquefied petroleum gas. This standard is available 
through HUD's online reading room.
    83. UL 1042-2009, Electric Baseboard Heating Equipment. The 
proposed rule would update UL 1042-1994, Electric Baseboard Heating 
Equipment, Fourth Edition, with 1998 revisions. This standard sets 
forth the requirements for portable and fixed electric baseboard 
heating equipment rated at 600 volts or less, to be employed in 
ordinary locations in accordance with NFPA 70. This standard is 
available through HUD's online reading room.
    84. UL 1479-2014, Standard for Fire Tests of Penetration Firestops. 
This proposed rule would add this standard for incorporation by 
reference. This standard provides testing requirements of penetration 
firestops of various materials and construction that are intended for 
use in openings in fire resistive wall, floor, or floor-ceiling 
assemblies, and membrane type penetration firestops of various 
materials and construction that are intended for use in openings in 
fire resistive wall assemblies. This standard is available through 
HUD's online reading room.
    85. UL 1995-2011, Heating and Cooling Equipment. The proposed rule 
would update UL 1995, Heating and Cooling Equipment, Second Edition, 
with 1999 revisions. This standard sets forth the requirements for the 
following stationary equipment for use in nonhazardous locations rated 
greater than 600 volts up to 7200 V, and remote control assemblies for 
such equipment: heat pumps, air conditioners, liquid chillers and 
compressor-evaporator or liquid chiller assemblies, add-on heat pumps 
and heat pump water heaters, refrigerant desuperheaters, and packaged 
heat pump water heaters. This standard is available through HUD's 
online reading room.
    86. UL 2034-2016, Standard for Single and Multiple Station Carbon 
Monoxide Alarms. This standard has already been approved for 
incorporation by reference for Sec.  3280.211(a) by the Director of the 
Office of the Federal Register and is unchanged but is being proposed 
for incorporation by reference into Sec. Sec.  3280.209 and 3280.703. 
This standard is available through HUD's online reading room.
    87. UL 60335-2-34-2012, Standard for Household and Similar 
Electrical Appliances--Safety, Part 2-34: Particular Requirements for 
Motor-Compressors. The proposed rule would add this standard for 
incorporation by reference. This standard deals with the

[[Page 43139]]

safety of sealed (hermetic and semi-hermetic type) motor-compressors, 
their protection and control systems, if any, which are intended for 
use in equipment for household and similar purposes and which conform 
with the standards applicable to such equipment. This standard is 
available through HUD's online reading room.
    88. WDMA I.S.4-2009, Industry Specification for Preservative 
Treatment for Millwork. The proposed rule would update NWWDA I.S.4-81, 
Water Repellent Preservative Non-Pressure Treatment for Millwork. This 
specification provides a nationally recognized standard for the water-
repellent preservative treatment for millwork and serves as a basis of 
common understanding for producers, preservative formulators, 
distributors and users. The standard is also intended to promote fair 
competition within the industry and to aid purchasers and users in 
obtaining properly treated millwork. This standard is available through 
HUD's online reading room.
    In addition to reviewing these standards on-line, copies of the 
standards may be obtained from the organization that developed the 
standard as follows:

AAMA--American Architectural Manufacturers Association, now known as 
Fenestration and Glazing Industry Alliance, 1900 E Golf Road, 
Schaumburg, Illinois 60173, website: www.fgiaonline.org.
AFPA--American Forest and Paper Association, 1101 K Street NW, Suite 
700, Washington, DC, telephone number 202-463-2700, website: 
www.afandpa.org.
AHRI--Air Conditioning, Heating & Refrigeration Institute, 2311 Wilson 
Blvd., Suite 400, Arlington, VA 22201, telephone number 703-524-8800, 
fax number 703-528-3816, website: www.ahrinet.org.
AISC--American Institute of Steel Construction, 130 East Randolph 
Street, Suite 2000, Chicago, IL 60601-6219, telephone number 312-670-
2400, fax number 312-626-2402, website: www.aisc.org.
AISI--American Iron and Steel Institute, 25 Massachusetts Avenue NW, 
Suite 800, Washington, DC 20001, telephone number 202-452-7100, 
website: www.steel.org.
ANSI--American National Standards Institute, 25 West 43rd Street, 4th 
Floor, New York, NY 10036, (212) 642-4900, fax (212) 398-0023, website: 
www.ansi.org.
APA--The Engineered Wood Association (formerly American Plywood 
Association), 7011 South 19th Street, Tacoma, WA 98466-5333, telephone 
number 253-565-6600, fax number 253-565-7265, website: www.apawood.org.
ASME--American Society of Mechanical Engineers, Two Park Avenue, New 
York, NY 10016-5990, telephone number 800-843-2763, website: 
www.asme.org.
ASCE/SEI--American Society of Civil Engineers/Structural Engineering 
Institute, 1801 Alexander Bell Drive, Reston, VA 20191, telephone 
number 800-548-2723, website: www.asce.org.
ASHRAE--American Society of Heating, Refrigerating and Air-Conditioning 
Engineers, 180 Technology Parkway NW, Peachtree Corners, GA 30092, 
telephone number 404-636-8400, fax 404-321-5478, website: 
www.ashrae.org.
ASME--American Society of Mechanical Engineers, Two Park Avenue, New 
York, NY 10016, telephone number 800-843-2763, website: www.asme.org.
ASTM--ASTM, International Headquarters, 100 Barr Harbor Drive, West 
Conshohocken, PA 19428-2959, 1-877-909-2786 (USA & Canada), fax number 
610-832-9555, website: www.astm.org.
AWC--American Wood Council, 222 Catoctin Circle SE, Suite 201, 
Leesburg, VA 20175, telephone number 202-463-2766, website: 
www.awc.org.
CPA--Composite Panel Association (formerly the American Hardboard 
Association), 19465 Deerfield Ave., Suite 306, Leesburg, VA 20176, 
telephone number 1-703-724-1128, website: compositepanel.org.
HPVA--Decorative Hardwoods Association (formerly HPVA), 42777 Trade 
West Drive, Sterling, VA 20166, telephone number 703-435-2900, fax 703-
435-2537, website: www.decorativehardwoods.org.
IAPMO--International Association of Plumbing and Mechanical Officials, 
4755 East Philadelphia Street, Ontario, CA 91716, telephone number 909-
472-4100, fax number 909-472-4150, website: /www.iapmo.org.
ICC-ES--International Code Council Evaluation Service, 3060 Saturn 
Street, Suite 100, Brea, CA 92821, telephone number 1-800-423-6587, fax 
(562) 695-4694, website: www.icc-es.org.
International Organization for Standardization/International 
Electrotechnical Commission, Chemin de Blandonnet 8, CP 401--1214 
Vernier, Geneva, Switzerland, telephone number +41 22 749 01 11, 
website: www.iso.org.
NFPA--National Fire Protection Association, 1 Batterymarch Park, 
Quincy, MA 02169, telephone number (617) 770-3000, fax (508) 895-8301, 
website: www.nfpa.org.
SAE--Society of Automotive Engineers, 400 Commonwealth Drive, 
Warrendale, PA 15096, telephone number 724-776-4841, fax number 724-
776-0790, website: www.sae.org.
TPI--Truss Plate Institute, 2670 Crain Highway, Suite 203, Waldorf, MD 
20601, telephone number 240-587-5582, fax number 866-501-4012, website: 
www.tpinst.org.
UL--Underwriters' Laboratories, Inc., 333 Pfingsten Road, Northbrook, 
IL 60062, telephone number 847-272-8800, fax number 847-509-6257, 
website: www.ul.com.
WDMA--Window and Door Manufacturers Association, 2001 K Street NW, 3rd 
Floor North, Washington, DC 20006, telephone number 202-367-1157, 
website: www.wdma.com.

IV. Findings and Certifications

Regulatory Planning and Review

    Under Executive Order 12866 (Regulatory Planning and Review), a 
determination must be made whether a regulatory action is significant 
and, therefore, subject to review by the Office of Management and 
Budget (OMB) in accordance with the requirements of the order. 
Executive Order 13563 (Improving Regulations and Regulatory Review) 
directs executive agencies to analyze regulations that are ``outmoded, 
ineffective, insufficient, or excessively burdensome, and to modify, 
streamline, expand, or repeal them in accordance with what has been 
learned.'' Executive Order 13563 also directs that, where relevant, 
feasible, and consistent with regulatory objectives, and to the extent 
permitted by law, agencies are to identify and consider regulatory 
approaches that reduce burdens and maintain flexibility and freedom of 
choice for the public.
    The Office of Management and Budget (OMB) reviewed this rule under 
Executive Order 12866 (entitled ``Regulatory Planning and Review''). 
OMB determined that this rule is a ``significant regulatory action'' as 
defined in section 3(f) of the Order (although not an economically 
significant regulatory action, as provided under section 3(f)(1) of the 
Order). Any changes made to the rule subsequent to its submission to 
OMB are identified in the docket file, which is available for public 
inspection at either www.regulations.gov or in the Regulations 
Division, Office of the

[[Page 43140]]

General Counsel, Room 10276, 451 7th Street SW, Washington, DC 20410-
0500. HUD strongly encourages the public to view the docket file at 
www.regulations.gov. Due to security measures at the HUD Headquarters 
building, please schedule an appointment to review the docket file by 
calling the Regulations Division at 202-402-3055 (this is not a toll-
free number). Individuals with speech or hearing impairments may access 
this number via TTY by calling the Federal Relay Service at toll-free 
800-877-8339.

Paperwork Reduction Act

    The information collection requirements contained in this proposed 
rule have been approved by the Office of Management and Budget (OMB) 
under the Paperwork Reduction Act of 1995 (44 U.S.C. 3501-3520). In 
accordance with the Paperwork Reduction Act, an agency may not conduct 
or sponsor, and a person is not required to respond to, a collection of 
information unless the collection displays a valid control number. OMB 
has issued HUD the control number 2502-0253 for the information 
collection requirements under the current Manufactured Housing 
Construction and Safety Standards Program.

Unfunded Mandates Reform Act

    Title II of the Unfunded Mandates Reform Act of 1995 (2 U.S.C. 
1531-1538) establishes requirements for Federal agencies to assess the 
effects of their regulatory actions on State, local, and tribal 
governments and the private sector. This rule will not impose any 
Federal mandates on any State, local, or tribal government or the 
private sector within the meaning of the Unfunded Mandates Reform Act 
of 1995.

Environmental Review

    A Finding of No Significant Impact with respect to the environment 
has been made in accordance with HUD regulations at 24 CFR part 50, 
which implement section 102(2)(C) of the National Environmental Policy 
Act of 1969 (42 U.S.C. 4332(2)(C)). The Finding of No Significant 
Impact is available for public inspection on www.regulations.gov and 
between the hours of 8 a.m. and 5 p.m. weekdays in the Regulations 
Division, Office of General Counsel, Room 10276, Department of Housing 
and Urban Development, 451 Seventh Street SW, Washington, DC 20410-
0500.

Regulatory Flexibility Act

    The Regulatory Flexibility Act (RFA) (5 U.S.C. 601 et seq.) 
generally requires an agency to conduct a regulatory flexibility 
analysis of any rule subject to notice and comment rulemaking 
requirements, unless the agency certifies that the rule will not have a 
significant economic impact on a substantial number of small entities.
    The rule, as proposed, would regulate establishments primarily 
engaged in making manufactured homes (NAICS 32991). The Small Business 
Administration's size standards define an establishment primarily 
engaged in making manufactured homes as small if it does not exceed 
1,250 employees. HUD believes that many of the manufacturers included 
under this NAICS definition fall below the small business threshold of 
1250 employees. The proposed rule would apply to all of the 
manufacturers. The rule would, thus, affect a substantial number of 
small entities. HUD has determined, however, that this rule would not 
have a significant economic impact on a substantial number of small 
entities.
    As discussed in the economic impact analysis prepared for this 
proposed rule, however, most of the revisions proposed by this rule 
would not affect costs of manufacturers, large or small, and provide 
benefit to homeowners. Further, of the nine code changes proposed by 
this rule that would affect the cost of design, production, or 
installation of manufactured homes, seven would decrease the costs of 
manufacturing or would provide manufacturers additional flexibility in 
the design of the home. Only two proposed revisions would increase 
costs and have an ambiguous impact on costs. The proposed revisions 
that increase costs, however, would increase fire safety save lives, 
reduce injury, and reduce property damage. This rule also proposes four 
changes that would eliminate the need for manufacturers to prepare and 
submit an Alternate Construction (AC) letter, providing all 
manufacturers, large and small, additional cost savings and increased 
flexibility in design. These provisions would provide additional 
options and increased flexibility in, for example, the design of 
accessible shower stalls, multi-unit homes and revised floor plans.
    Overall, the regulatory impact analysis prepared for this proposed 
rule concluded that the decreased costs of design, production and 
installation of manufactured homes would be between $9.5 million to 
$23.3 million, annually. This overall decrease in production cost for 
the manufacturer associated with this proposed rule would reduce burden 
and result in an overall positive economic impact on manufacturers and 
consumers. The regulatory impact analysis also provides that the rule, 
as proposed, would produce net benefits ranging from $18.8 million to 
$21.8 million.
    Notwithstanding HUD's determination that this rule, as proposed, 
would not have a significant economic effect on a substantial number of 
small entities, HUD specifically invites comments regarding this 
certification and any less burdensome alternatives to this rule that 
will meet HUD's objectives as described in this preamble.

Executive Order 13132, Federalism

    Executive Order 13132 (entitled ``Federalism'') prohibits, to the 
extent practicable and permitted by law, an agency from promulgating a 
regulation that has federalism implications and either imposes 
substantial direct compliance costs on state and local governments and 
is not required by statute, or preempts state law, unless the relevant 
requirements of section 6 of the Executive Order are met. This rule 
does not have federalism implications and does not impose substantial 
direct compliance costs on state and local governments or preempt state 
law within the meaning of the Executive Order.

Catalog of Federal Domestic Assistance

    The Catalog of Federal Domestic Assistance number for Manufactured 
Housing Construction and Safety Standards is 14.171.

List of Subjects

24 CFR Part 3280

    Housing standards, Incorporation by reference, Manufactured homes.

24 CFR Part 3282

    Administrative practice and procedure, Consumer protection, 
Intergovernmental relations, Investigations, Manufactured homes, 
Reporting and recordkeeping requirements, Warranties.

24 CFR Part 3285

    Housing standards, Manufactured homes.

24 CFR Part 3286

    Administrative practice and procedure, Consumer protection, 
Intergovernmental relations, Manufactured homes, Reporting and 
recordkeeping requirements.

    For the reasons discussed in the preamble, HUD proposes to amend 24 
CFR parts 3280, 3282, 3285, and 3826 as follows:

[[Page 43141]]

PART 3280--MANUFACTURED HOME CONSTRUCTION AND SAFETY STANDARDS

0
1. The authority citation for part 3280 continues to read as follows:

    Authority:  15 U.S.C. 2697, 42 U.S.C. 3535(d), 5403, and 5424.

0
2. Amend Sec.  3280.2 as follows:
0
a. Revise definition for ``Certification label'';
0
b. Add, in alphabetical order, a definition for ``Dwelling'';
0
c. Revise definition for ``Dwelling unit'';
0
d. Add, in alphabetical order, definitions for ``Multipurpose fire 
sprinkler system'', ``Stand-alone fire sprinkler system''; and ``Water 
resistive barrier''.
    The revisions and additions read as follows:


Sec.  3280.2   Definitions.

* * * * *
    Certification label means the approved form of certification by the 
manufacturer that, under Sec.  3280.11, is permanently affixed to each 
transportable section of each manufactured home manufactured for sale 
in the United States.
    Dwelling means any structure that contains one to a maximum of 
three dwelling units, designed to be permanently occupied for 
residential living purposes.
    Dwelling unit means a single unit that provides complete 
independent living facilities for one or more persons, where the 
occupancy is primarily permanent in nature, including permanent 
provisions for separate living, sleeping, cooking, eating, and 
sanitation.
* * * * *
    Multipurpose fire sprinkler system means a system that supplies 
domestic water to both plumbing fixtures and fire sprinklers.
* * * * *
    Stand-alone fire sprinkler system means a system that is separate 
and independent from the water distribution system.
* * * * *
    Water resistive barrier means a material behind the exterior wall 
covering that is intended to prevent liquid water that has penetrated 
behind the exterior covering from intruding further into the exterior 
wall assembly.
* * * * *
0
3. Revise and republish Sec.  3280.4 to read as follows:


Sec.  3280.4   Incorporation by reference.

    Certain material is incorporated by reference in this part with the 
approval of the Director of the Federal Register in accordance with 5 
U.S.C. 552(a) and 1 CFR part 51. To enforce any edition other than that 
specified in this section, the U.S. Department of Housing and Urban 
Development (Department) must publish a document in the Federal 
Register and the material must be available to the public. All approved 
incorporation by reference (IBR) material is available for inspection 
at the Department and at the National Archives and Records 
Administration (NARA). Contact the Department at: Office of 
Manufactured Housing Program, Manufactured Housing and Construction 
Standards Division, U.S. Department of Housing and Urban Development, 
451 Seventh Street SW, Room B-133, Washington, DC 20410, email 
[email protected]. For information on the availability of this material at 
NARA, email [email protected] or go to www.archives.gov/federal-register/cfr/ibr-locations.html. Copies of incorporated standards that 
are not available from their producer organizations may be obtained 
from the Office of Manufactured Housing Programs. The material may be 
obtained from the following source(s):
    (a) Air Conditioning, Heating & Refrigeration Institute (AHRI), 
2311 Wilson Blvd., Suite 400, Arlington, VA 22201; telephone: 703-524-
8800; fax: 703-528-3816; website: www.ahrinet.org.
    (1) ANSI/AHRI Standard 210/240-2008 with Addenda 1 and 2, Unitary 
Air-Conditioning and Air-Source Heat Pump Equipment, 2008; IBR approved 
for Sec. Sec.  3280.511(b); 3280.703(d); 3280.714(a).
    (2) [Reserved]
    (b) Aluminum Association (AA), 1525 Wilson Blvd., Suite 600, 
Arlington, VA 22209; telephone: 703-358-2960; fax: 703-358-3921; 
website: www.aluminum.org.
    (1) Aluminum Design Manual, Specifications and Guidelines for 
Aluminum Structures, Part 1-A, Sixth Edition, October 1994; IBR 
approved for Sec.  3280.304(b).
    (2) Aluminum Design Manual, Specifications and Guidelines for 
Aluminum Structures, Part 1-B, First Edition, October 1994; IBR 
approved for Sec.  3280.304(b).
    (c) American Forest and Paper Association (AFPA), 1101 K Street NW, 
Suite 700, Washington, DC 20005; telephone: 202-463-2700; website: 
www.afandpa.org.
    (1) AFPA, Wood Structural Design Data, 1986 Edition with 1992 
Revisions; IBR approved for Sec.  3280.304(b).
    (2) [Reserved]
    (d) American Gas Association (AGA), 400 North Capitol Street NW, 
Washington, DC 20001: telephone: 202-824-7000; website: www.aga.org.
    (1) AGA No. 3-87, Requirements for Gas Connectors for Connection of 
Fixed Appliances for Outdoor Installation, Park Trailers, and 
Manufactured (Mobile) Homes to the Gas Supply; IBR approved for Sec.  
3280.703(d).
    (2) [Reserved]
    (e) American Institute of Steel Construction (AISC), 130 East 
Randolph Street, Suite 2000, Chicago, IL 60601-6219; telephone: 312-
670-2400; fax: 312-626-2402; website: www.aisc.org.
    (1) AISC 360-10, Specification for Structural Steel Buildings, June 
22, 2010; IBR approved for Sec. Sec.  3280.304(b); 3280.305(j).
    (2) [Reserved]
    (f) American Iron and Steel Institute (AISI), 25 Massachusetts 
Avenue NW, Suite 800, Washington, DC 20001; telephone: 202-452-7100; 
website: www.steel.org.
    (1) AISI S100-12, North American Specification for the Design of 
Cold-Formed Steel Structural Members, 2012; IBR approved for Sec. Sec.  
3280.304(b); 3280.305(j).
    (2) [Reserved]
    (g) American National Standards Institute (ANSI), 25 West 43rd 
Street, 4th floor, New York, NY 10018; telephone: 212-642-4900; fax: 
212-398-0023; website: www.ansi.org.
    (1) ANSI A112.14.1-1975, Backflow Valves; IBR approved for Sec.  
3280.604(c).
    (2) ANSI A112.19.5-1979, Trim for Water Closet, Bowls, Tanks, and 
Urinals; IBR approved for Sec.  3280.604(c).
    (3) ANSI/AITC A190.1-1992, For wood products--Structural Glued 
Laminated Timber; IBR approved for Sec.  3280.304(b).
    (4) ANSI A208.1-2009, Particleboard, 2009; IBR approved for Sec.  
3280.304(b).
    (5) ANSI A208.2-2002, Medium Density Fiberboard (MDF) For Interior 
Applications, approved May 13, 2002; IBR approved for Sec.  
3280.304(b).
    (6) ANSI B16.18-1984, Cast Copper Alloy Solder-Joint Pressure 
Fittings; IBR approved for Sec.  3280.604(c).
    (7) ANSI C72.1-1972, section 4.3.1, Household Automatic Electric 
Storage Type Water Heaters; IBR approved for Sec.  3280.707(d).
    (8) ANSI LC 1-2014, Fuel Gas Piping Systems Using Corrugated 
Stainless Steel Tubing, 2014; IBR approved for Sec.  3280.705(b).
    (9) ANSI Z21.1-2016, Household Cooking Gas Appliances, 2016; IBR 
approved for Sec.  3280.703(a).
    (10) ANSI Z21.5.1-2015, Gas Clothes Dryers Volume 1, Type 1 Clothes 
Dryers, 2015; IBR approved for Sec.  3280.703(a).

[[Page 43142]]

    (11) ANSI Z21.10.1-2014, Gas Water Heaters--Volume 1, Storage Water 
Heaters with Input Ratings of 75,000 BTU per hour or Less, 2014; IBR 
approved for Sec. Sec.  3280.703(a); 3280.707(d).
    (12) ANSI Z21.10.3-2014, Gas-fired Water Heaters, Volume 3, Storage 
Water Heaters with Input Ratings Above 75,000 BTU per hour, Circulating 
and Instantaneous, 2015; IBR approved for Sec.  3280.703(a).
    (13) ANSI Z21.15-2009, Manually Operated Gas Valves for Appliances, 
Appliance Connector Valves and Hose End Valves, 2009; IBR approved for 
Sec. Sec.  3280.703(c); 3280.705(c) and (l).
    (14) ANSI Z21.19-2014, Refrigerators Using Gas Fuel, 2014; IBR 
approved for Sec.  3280.703(a).
    (15) ANSI Z21.20-2014, Automatic Gas Ignition Systems and 
Components, 2014; IBR approved for Sec.  3280.703(d).
    (16) ANSI Z21.21-2012, Automatic Valves for Gas Appliances, 2012; 
IBR approved for Sec.  3280.703(d).
    (17) ANSI Z21.22-1999, Relief Valves for Hot Water Supply Systems; 
IBR approved for Sec. Sec.  3280.604(c); 3280.703(d).
    (18) ANSI Z21.23-2000 (R2005) Gas Appliance Thermostats with ANSI 
Z21.23a-2003 (Addenda1) and ANSI 21.23b-2005 (Addenda 2), approved 
January 17, 2001; IBR approved for Sec.  3280.703(d).
    (19) ANSI Z21.24-2006, (R2011) Connectors for Gas Appliances, 2011; 
IBR approved for Sec.  3280.703(c).
    (20) ANSI Z21.40.1-1996, Gas-Fired, Heat Activated Air Conditioning 
and Heat Pump Appliances, 1996; IBR approved for Sec. Sec.  
3280.703(a); 3280.714(a).
    (21) ANSI Z21.47-2012, Gas-Fired Central Furnaces (Except Direct 
Vent Systems), 2012; IBR approved for Sec.  3280.703(a).
    (22) ANSI Z21.75-2007, Connectors for Outdoor Gas Appliances and 
Manufactured Homes, 2007; IBR approved for Sec.  3280.703(a).
    (23) ANSI Z34.1-1993, Third-Party Certification Programs for 
Products, Processes, and Services; IBR approved for Sec. Sec.  
3280.403(e); 3280.405(e).
    (24) ANSI Z97.1-2009, Standard for Safety Glazing Materials used in 
Buildings--Safety Performance Specifications and Methods of Test, 2009; 
IBR approved for Sec. Sec.  3280.113(d); 3280.304(b); 3280.403(d); 
3280.607(b); 3280.703(d).
    (25) ANSI Z124.1-1987, Plastic Bathtub Units with Addendum Z124.1a-
1990 and Z124.1b-1991; IBR approved for Sec.  3280.604(c).
    (26) ANSI Z124.2-1987, Plastic Shower Receptors and Shower Stalls 
with Addendum Z124.2a-1990; IBR approved for Sec.  3280.604(c).
    (27) ANSI Z124.3-1986, Plastic Lavatories with Addendum Z124.3a-
1990; IBR approved for Sec.  3280.604(c).
    (28) ANSI Z124.4-1986, Plastic Water Closets, Bowls, and Tanks with 
Addenda Z124.4a-1990; IBR approved for Sec.  3280.604(c).
    (29) ANSI Z124.5-1997, Plastic Toilet (Water Closets) Seats; IBR 
approved for Sec.  3280.604(c).
    (30) ANSI Z124.7-1997, Prefabricated Plastic Spa Shells; IBR 
approved for Sec.  3280.604(c).
    (31) ANSI Z-124.9-1994, Plastic Urinal Fixtures; IBR approved for 
Sec.  3280.604(c).
    (h) American Society of Civil Engineers (ASCE), 1801 Alexander Bell 
Drive, Reston, VA 20191; telephone: 800-548-2723; website: 
www.asce.org.
    (1) ASCE/SEI 7-05, Minimum Design Loads for Buildings and Other 
Structures, 2005; IBR approved for Sec. Sec.  3280.5(f); 3280.304(b); 
3280.305(c).
    (2) SEI/ASCE 8-02, Specification for the Design of Cold-Formed 
Stainless Steel Structural Members, 2002; IBR approved for Sec. Sec.  
3280.304(b); 3280.305(j).
    (3) ASCE 19-96, Structural Applications of Steel Cables for 
Buildings; IBR approved for Sec.  3280.304(b).
    (i) American Society of Heating, Refrigeration and Air Conditioning 
Engineers (ASHRAE), 1791 Tullie Circle NE, Atlanta, GA 30329; 
telephone: 404-636-8400; fax: 404-321-5478; website: www.ashrae.org/home/.
    (1) 1997 ASHRAE Handbook of Fundamentals, chapters 22 through 27, 
(except for the following parts of this standard that are not 
incorporated by reference: 23.1 Steel Frame Construction; 23.2 Masonry 
Construction; 23.3 Foundations and Floor Systems; 23.15 Pipes; 23.17 
Tanks, Vessels, and Equipment; 23.18 Refrigerated Rooms and Buildings; 
24.18 Mechanical and Industrial Systems; 25.19 Commercial Building 
Envelope Leakage; 27.9 Calculation of Heat Loss from Crawl Spaces), 
Inch-Pound Edition (1997); IBR approved for Sec. Sec.  3280.508(a) and 
(e); 3280.511(a).
    (2) ANSI/ASHRAE 62.2-2013, Ventilation and Acceptable Indoor Air 
Quality in Low-Rise Residential Buildings; IBR approved for Sec. Sec.  
3280.103(d) and (e); 3280.703(d).
    (j) American Society of Mechanical Engineers (ASME), Two Park 
Avenue, New York, NY 10016-5990; telephone: 800-843-2763; website: 
www.asme.org/.
    (1) ASME A112.1.2-1991, Air Gaps in Plumbing Systems; IBR approved 
for Sec.  3280.604(c).
    (2) ANSI/ASME A112.4.1-1993, Water Heater Relief Valve Drain Tubes; 
IBR approved for Sec.  3280.604(c).
    (3) ANSI/ASME A112.4.3-1999, Plastic Fittings for Connecting Water 
Closets to the Sanitary Drainage System; IBR approved for Sec.  
3280.604(c).
    (4) ASME/ANSI A112.18.1M-1989, Plumbing Fixture Fittings; IBR 
approved for Sec.  3280.604(c).
    (5) ASME A112.18.3M-1996, Performance Requirements for Backflow 
Protection Devices and Systems in Plumbing Fixture Fittings; IBR 
approved for Sec.  3280.604(c).
    (6) ASME A112.18.6-1999, Flexible Water Connectors; IBR approved 
for Sec.  3280.604(c).
    (7) ASME A112.18.7-1999, Deck Mounted Bath/Shower Transfer Valves 
with Integral Backflow Protection; IBR approved for Sec.  3280.604(c).
    (8) ANSI/ASME A112.19.1M-1987, Enameled Cast Iron Plumbing 
Fixtures; IBR approved for Sec.  3280.604(c).
    (9) ANSI/ASME A112.19.2(M)-1990, Vitreous China Plumbing Fixtures; 
IBR approved for Sec.  3280.604(c).
    (10) ANSI/ASME A112.19.3M-1987, Stainless Steel Plumbing Fixtures 
(Designed for Residential Use); IBR approved for Sec.  3280.604(c).
    (11) ANSI/ASME A112.19.4(M)-1984, Porcelain Enameled Formed Steel 
Plumbing Fixtures; IBR approved for Sec.  3280.604(c).
    (12) ASME A112.19.6-1995, Hydraulic Performance Requirements for 
Water Closets and Urinals; IBR approved for Sec.  3280.604(c).
    (13) ASME/ANSI A112.19.7M-1987, Whirlpool Bathtub Appliances; IBR 
approved for Sec.  3280.604(c).
    (14) ASME/ANSI A112.19.8M-1989, Suction Fittings for Use in 
Swimming Pools, Wading Pools, Spas, Hot Tubs, and Whirlpool Bathtub 
Appliances; IBR approved for Sec.  3280.604(c).
    (15) ASME A112.19.9M-1991, Non-Vitreous Ceramic Plumbing Fixtures; 
IBR approved for Sec.  3280.604(c).
    (16) ASME A112.19.10-1994, Dual Flush Devices for Water Closets; 
IBR approved for Sec.  3280.604(c).
    (17) ANSI/ASME A112.21.3M-1985, Hydrants for Utility and 
Maintenance Use; IBR approved for Sec.  3280.604(c).
    (18) ANSI/ASME B1.20.1-2013, Pipe Threads, General Purpose (Inch), 
2013; IBR approved for Sec. Sec.  3280.604(c); 3280.703(b); 
3280.705(e); 3280.706(d).
    (19) ANSI/ASME B16.3-1992, Malleable Iron Threaded Fittings; IBR 
approved for Sec.  3280.604(c).
    (20) ANSI/ASME B16.4-1992, Gray Iron Threaded Fittings; IBR 
approved for Sec.  3280.604(c).

[[Page 43143]]

    (21) ANSI/ASME B16.15-1985, Cast Bronze Threaded Fittings, Classes 
125 and 250; IBR approved for Sec.  3280.604(c).
    (22) ASME/ANSI B16.22-1989, Wrought-Copper and Copper Alloy Solder-
Joint Pressure Fitting; IBR approved for Sec.  3280.604(c).
    (23) ASME B16.23-1992, Cast Copper Alloy Solder-Joint Drainage 
Fittings-DWV; IBR approved for Sec.  3280.604(c).
    (24) ASME/ANSI B16.26-1988, Cast Copper Alloy Fittings for Flared 
Copper Tubes; IBR approved for Sec.  3280.604(c).
    (25) ASME/ANSI B16.29-1986, Wrought Copper and Wrought Copper Alloy 
Solder-Joint Drainage Fittings-DWV; IBR approved for Sec.  3280.604(c).
    (26) ANSI/ASME B36.10-2004, Welding and Seamless Wrought Steel 
Pipe; 2004; IBR approved for Sec. Sec.  3280.604(c); 3280.703(b), 
3280.705(b); 3280.706(b).
    (k) American Society of Sanitary Engineering (ASSE), 901 
Canterbury, Suite A, Westlake, OH 44145; telephone: 440-835-3040; fax: 
440-835-3488; website: www.asse-plumbing.org.
    (1) ASSE 1001, Performance Requirements for Pipe Applied 
Atmospheric Type Vacuum Breakers (ANSI Approved 1990); IBR approved for 
Sec.  3280.604(c).
    (2) ASSE 1002, Performance Requirements for Water Closet Flush Tank 
Fill Valves (Ballcocks), Revision 5-1986 (ANSI/ASSE-1979); IBR approved 
for Sec.  3280.604(c).
    (3) ASSE 1006, Plumbing Requirements for Residential Use 
(Household) Dishwashers (ASSE/ANSI-1986); IBR approved for Sec.  
3280.604(c).
    (4) ASSE 1007-1986, Performance Requirements for Home Laundry 
Equipment; IBR approved for Sec.  3280.604(c).
    (5) ASSE 1008-1986, Performance Requirements for Household Food 
Waste Disposer Units; IBR approved for Sec.  3280.604(c).
    (6) ASSE 1011-1981, Performance Requirements for Hose Connection 
Vacuum Breakers (ANSI-1982); IBR approved for Sec.  3280.604(c).
    (7) ASSE 1014-1989, Performance Requirements for Hand-held Showers 
(ANSI-1990); IBR approved for Sec.  3280.604(c).
    (8) ASSE 1016-2005, Performance Requirements for Automatic 
Compensating Values for Individual Shower and Tub/Shower Combinations, 
approved January 2005; IBR approved for Sec. Sec.  3280.604(c); 
3280.607(b).
    (9) ASSE 1017-1986, Performance Requirements for Temperature 
Activated Mixing Valves for Primary Domestic Use; IBR approved for 
Sec.  3280.604(c).
    (10) ANSI/ASSE 1019-1978, Performance Requirements for Wall 
Hydrants, Frost Proof Automatic Draining, Anti-Backflow Types; IBR 
approved for Sec.  3280.604(c).
    (11) ASSE 1023, Performance Requirements for Hot Water Dispensers, 
Household Storage Type Electrical (ANSI/ASSE-1979); IBR approved for 
Sec.  3280.604(c).
    (12) ASSE 1025, Performance Requirements for Diverters for Plumbing 
Faucets with Hose Spray, Anti-Siphon Type, Residential Applications 
(ANSI/ASSE-1978); IBR approved for Sec.  3280.604(c).
    (13) ASSE 1037-1990, Performance Requirements for Pressurized 
Flushing Devices (Flushometers) for Plumbing Fixtures (ANSI-1990); IBR 
approved for Sec.  3280.604(c).
    (14) ASSE 1051, Performance Requirements for Air Admittance Valves 
for Plumbing Drainage Systems--Fixture and Branch Devices Revised 1996 
(ANSI 1998); IBR approved for Sec.  3280.604(c).
    (15) ASSE 1070-2004, Performance Requirements for Water Temperature 
Limiting Devices; IBR approved for Sec. Sec.  3280.604(c); 3280.607(b).
    (l) ASTM, International (ASTM), 100 Barr Harbor Drive, West 
Conshohocken, PA 19428-2959; telephone:877-909-2786 (USA & Canada); 
fax: 610-832-9555; website: www.astm.org.
    (1) ASTM A53/A53M-12, Standard Specification for Pipe, Steel, Black 
and Hot-Dipped, Zinc-Coated, Welded and Seamless, 2012; IBR approved 
for Sec. Sec.  3280.604(c); 3280.703(b).
    (2) ASTM A74-92, Standard Specification for Cast Iron Soil Pipe and 
Fittings; IBR approved for Sec.  3280.604(c).
    (3) ASTM A539-99, Standard Specification for Electric-Resistance-
Welded Coiled Steel Tubing for Gas and Fuel Oil Lines; IBR approved for 
Sec. Sec.  3280.703(b); 3280.705(b); 3280.706(b).
    (4) ASTM B42-10, Standard Specification for Seamless Copper Pipe, 
Standard Sizes, 2010; IBR approved for Sec. Sec.  3280.604(c); 
3280.703(c).
    (5) ASTM B43-91, Standard Specification for Seamless Red Brass 
Pipe, Standard Sizes; IBR approved for Sec. Sec.  3280.604(c); 
3280.705(b).
    (6) ASTM B88-14, Standard Specification for Seamless Copper Water 
Tube, 2014; IBR approved for Sec. Sec.  3280.604(c); 3280.703(b); 
3280.705(b); 3280.706(b).
    (7) ASTM B251-10, Standard Specification for General Requirements 
for Wrought Seamless Copper and Copper-Alloy Tube; IBR approved for 
Sec. Sec.  3280.604(c); 3280.703(c).
    (8) ASTM B280-13, Standard Specification for Seamless Copper Tube 
for Air Conditioning and Refrigeration Field Service, 2013; IBR 
approved for Sec. Sec.  3280.703(c); 3280.705(b); 3280.706(b).
    (9) ASTM B306-92, Standard Specification for Copper Drainage Tube 
(DWV); IBR approved for Sec.  3280.604(c).
    (10) ASTM C564-97, Standard Specification for Rubber Gaskets for 
Case Iron Soil Pipe and Fittings, approved December 10, 1997; IBR 
approved for Sec. Sec.  3280.604(c); 3280.611(d).
    (11) ASTM C920-02, Standard Specification for Elastomeric Joint 
Sealants, approved January 10, 2002; IBR approved for Sec.  
3280.611(d).
    (12) ASTM C1396/C1396M-14, Standard Specification for Gypsum Board, 
2014; IBR approved for Sec.  3280.304(b).
    (13) ASTM D781-68 (Reapproved 1973), Standard Test Methods for 
Puncture and Stiffness of Paperboard, and Corrugated and Solid 
Fiberboard; IBR approved for Sec. Sec.  3280.304(b); 3280.305(g).
    (14) ASTM D2235-88, Standard Specification for Solvent Cement for 
Acrylonitrile-Butadiene-Styrene (ABS) Plastic Pipe and Fittings; IBR 
approved for Sec.  3280.604(c).
    (15) ASTM D2564-91a, Standard Specification for Solvent Cements for 
Poly (Vinyl Chloride) (PVC) Plastic Piping Systems; IBR approved for 
Sec.  3280.604(c).
    (16) ASTM D2661-91, Standard Specification for Acrylonitrile-
Butadiene-Styrene (ABS) Schedule 40 Plastic Drain, Waste, and Vent Pipe 
and Fittings; IBR approved for Sec.  3280.604(c).
    (17) ASTM D2665-91b, Standard Specification for Poly (Vinyl 
Chloride) (PVC) Plastic Drain, Waste, and Vent Pipe and Fittings; IBR 
approved for Sec.  3280.604(c).
    (18) ASTM D2846-92, Standard Specification for Chlorinated Poly 
(Vinyl Chloride) (CPVC) Plastic Hot- and Cold-Water Distribution 
Systems; IBR approved for Sec.  3280.604(c).
    (19) ASTM D3309-92a, Standard Specification for Polybutylene (PB) 
Plastic Hot- and Cold-Water Distribution Systems; IBR approved for 
Sec.  3280.604(c).
    (20) ASTM D3311-92, Standard Specification for Drain, Waste, and 
Vent (DWV) Plastic Fittings Patterns; IBR approved for Sec.  
3280.604(c).
    (21) ASTM D3679-09a, Standard Specification for Rigid Poly (Vinyl 
Chloride) (PVC) Siding, 2009; IBR approved for Sec. Sec.  3280.304(b); 
3280.309(b).

[[Page 43144]]

    (22) ASTM D3953-97, Standard Specification for Strapping, Flat 
Steel, and Seals, approved April 10, 1997; IBR approved for Sec. Sec.  
3280.306(b); 3280.306(g).
    (23) ASTM D4442-07, Standard Test Methods for Direct Moisture 
Content Measurement of Wood & Wood-Base Materials, 2007; IBR approved 
for Sec.  3280.304(b).
    (24) ASTM D4444-13, Standard Test Methods for Use and Calibration 
of Hand-Held Moisture Meters, 2013; IBR approved for Sec.  3280.304(b).
    (25) ASTM D4635-01, Standard Specification for Polyethylene Films 
Made from Low-Density Polyethylene for General Use and Packaging 
Applications, approved June 10, 2001; IBR approved for Sec.  
3280.611(d).
    (26) ASTM D4756-06, Standard Practice for Installation of Rigid 
Poly (Vinyl Chloride) (PVC) Siding and Soffit, 2006; IBR approved for 
Sec. Sec.  3280.304(b); 3280.309(c).
    (27) ASTM D6007-14, Standard Test Method for Determining 
Formaldehyde Concentrations in Air from Wood Products Using a Small Air 
Chamber, approved October 1, 2014; IBR approved for Sec.  3280.406(b).
    (28) ASTM D7254-07, Standard Specification for Polypropylene (PP) 
Siding, 2007; IBR approved for Sec. Sec.  3280.304(b); 3280.309(c).
    (29) ASTM E84-01, Standard Test Method for Surface Burning 
Characteristics of Building Materials, 2001; IBR approved for Sec.  
3280.203(a).
    (30 ASTM E90-09, Standard Test Method for Laboratory Measurement of 
Airborne Sound Transmission Loss of Building Partitions and Elements, 
2009; IBR approved for Sec.  3280.115(b).
    (31) ASTM E96/E96M-13 Standard Test Methods for Water Vapor 
Transmission of Materials, 2013; IBR approved for Sec.  3280.504(a) and 
(c).
    (32) ASTM E119-14, Standard Test Methods for Fire Tests of Building 
Construction and Materials, 2014; IBR approved for Sec. Sec.  
3280.215(a) and (d); 3280.304(b); 3280.1003(a).
    (33) ASTM E162-94, Standard Test Method for Surface Flammability of 
Materials Using a Radiant Heat Energy Source; IBR approved for Sec.  
3280.203(a).
    (34) ASTM E492-09, Standard Test Method for Laboratory Measurement 
of Impact Sound Transmission Through Floor-Ceiling Assemblies Using the 
Tapping Machine, 2009; IBR approved for Sec.  3280.115(c).
    (35) ASTM E773-97, Standard Test Methods for Accelerated Weathering 
of Sealed Insulating Glass Units; IBR approved for Sec.  3280.403(d).
    (36) ASTM E774-97, Standard Specification for the Classification of 
the Durability of Sealed Insulating Glass Units; IBR approved for Sec.  
3280.403(d).
    (37) ASTM E814-13, Standard Test Method for Fire Tests of 
Penetration Firestop Systems, 2013; IBR approved for Sec.  3280.215(d).
    (38) ASTM E1333-14, Standard Test Method for Determining 
Formaldehyde Concentrations in Air and Emission Rates from Wood 
Products Using a Large Air Chamber, approved October 1, 2014; IBR 
approved for Sec.  3280.406(b).
    (39) ASTM F628-91, Standard Specification for Acrylonitrile-
Butadiene-Styrene (ABS) Schedule 40, Plastic Drain, Waste, and Vent 
Pipe with a Cellular Core; IBR approved for Sec.  3280.604(c).
    (40) ASTM F876-10, Standard Specification for Crosslinked 
Polyethylene (PEX) Tubing, approved February 10, 2010; IBR approved for 
Sec.  3280.604(c).
    (41) ASTM F877-07, Standard Specification for Crosslinked 
Polyethylene (PEX) Plastic Hot- and Cold-Water Distribution Systems, 
approved February 1, 2007; IBR approved for Sec.  3280.604(c).
    (m) American Wood Council (AWC), 222 Catoctin Circle SE, Suite 201, 
Leesburg, VA 20175; telephone: 202-463-2766; website: www.awc.org.
    (1) AWC, Design Values for Joists & Rafters, 2012; IBR approved for 
Sec.  3280.304(b).
    (2) AWC NDS-2015, National Design Specifications for Wood 
Construction, 2015 Edition, with Supplement, Design Values for Wood 
Construction, September 30, 2014; IBR approved for Sec. Sec.  
3280.215(a); 3280.304(b).
    (3) AWC PS-20-70-2012, Span Tables for Joists & Rafters, 2012; IBR 
approved for Sec.  3280.304(b).
    (n) Cast Iron Soil Pipe Institute (CISPI), 1064 Delaware Avenue SE, 
Atlanta, GA 30316; telephone: 404-622-0073; fax: 404-973-2845; website: 
www.cispi.org/.
    (1) CISPI-301-90, Standard Specification for Hubless Cast Iron Soil 
Pipe and Fittings for Sanitary and Storm Drain, Waste, and Vent Piping 
Applications; IBR approved for Sec.  3280.604(c).
    (2) CISPI-HSN-85, Specification for Neoprene Rubber Gaskets for HUB 
and Spigot Cast Iron Soil Pipe and Fittings; IBR approved for 
Sec. Sec.  3280.604(c), 3280.611(d).
    (o) Composite Panel Association (formerly the American Hardboard 
Association), 19465 Deerfield Ave, Suite 306, Leesburg, VA 20176; 
telephone: 703-724-1128; website: www.compositepanel.org.
    (1) ANSI/AHA A135.4-2012, Basic Hardboard, 2012; IBR approved for 
Sec.  3280.304(b).
    (2) ANSI/AHA A135.5-2012, Prefinished Hardboard Paneling, 2012; IBR 
approved for Sec.  3280.304(b).
    (3) ANSI/AHA A135.6-2012, Hardboard Siding, 2012 IBR approved for 
Sec.  3280.304(b).
    (p) Decorative Hardwoods Association (formerly HPVA), 42777 Trade 
West Drive, Sterling, VA 20166; telephone: 703-435-2900; fax: 703-435-
2537; website: www.decorativehardwoods.org.
    (1) ANSI/HPVA HP-1-2009, American National Standard for Hardwood 
and Decorative Plywood, 2009; IBR approved for Sec.  3280.304(b).
    (2) HP-SG-96, Structural Design Guide for Hardwood Plywood Wall 
Panels, revised 1996; IBR approved for Sec.  3280.304(b).
    (q) The Engineered Wood Association (APA) (formerly the American 
Plywood Association), 7011 South 19th Street, Tacoma, WA 98411; 
telephone: 253-565-6600; fax: 253-565-7265; website: www.apawood.org.
    (1) APA D510C-2012, Panel Design Specification, 2012; IBR approved 
for Sec.  3280.304(b).
    (2) APA E30P-1996, APA Design/Construction Guide, Residential and 
Commercial Structures; IBR approved for Sec.  3280.304(b).
    (3) APA E30V-2011, Engineered Wood Construction Guide, 2011; IBR 
approved for Sec.  3280.304(b).
    (4) APA H815G-2013, Design & Fabrication of All-Plywood Beams, 
2013; IBR approved for Sec.  3280.304(b).
    (5) APA PS1-2009, Structural Plywood (with Typical APA Trademarks), 
2009; IBR approved for Sec.  3280.304(b).
    (6) APA S811P-2013, Design & Fabrication of Plywood Curved Panels, 
2013; IBR approved for Sec.  3280.304(b).
    (7) APA S812S-2013, Design & Fabrication of Glued Plywood-Lumber 
Beams, 2013; IBR approved for Sec.  3280.304(b).
    (8) APA U813M-2012, Design & Fabrication of Plywood Stressed-Skin 
Panels, 2012; IBR approved for Sec.  3280.304(b).
    (9) APA U814J-2013, Design & Fabrication of Plywood, Sandwiched 
Panels, 2013; IBR approved for Sec.  3280.304(b).
    (10) APA Y510-1998, Plywood Design, 1998; IBR approved for Sec.  
3280.304(b).
    (r) FS--Federal Specifications, General Services Administration, 
Specifications Branch, Room 6039, GSA Building, 7th and D Streets SW, 
Washington, DC 20407.
    (1) FS WW-P-541E/GEN-1980, Plumbing Fixtures (General

[[Page 43145]]

Specifications); IBR approved for Sec.  3280.604(c).
    (2) FS ZZ-R-765B-1970, Silicone Rubber, (with 1971 Amendment); IBR 
approved for Sec.  3280.611(d).
    (s) Fenestration and Glazing Industry Alliance (FGIA) (formerly 
known as American Architectural Manufacturers Association (AAMA)), 1900 
E. Golf Road, Schaumburg, Illinois 60173; website: www.fgiaonline.org.
    (1) AAMA 1503.1-88, Voluntary Test Method for Thermal Transmittance 
and Condensation Resistance of Windows, Doors, and Glazed Wall 
Sections; IBR approved for Sec.  3280.508(e).
    (2) AAMA 1600/I.S.7-00, Voluntary Specification for Skylights, 2003 
IBR approved for Sec.  3280.305(c).
    (3) AAMA 1701.2-12, Voluntary Standard for Utilization in 
Manufactured Housing for Primary Window and Sliding Glass Doors, 2012; 
IBR approved for Sec. Sec.  3280.403(b) and (e); 3280.404(b) and (e).
    (4) AAMA 1702.2-12, Voluntary Standard for Utilization in 
Manufactured Housing for Swinging Exterior Passage Door, 2012; IBR 
approved for Sec. Sec.  3280.403(e); 3280.405(b) and (e).
    (5) AAMA 1704-12, Voluntary Standard Egress Window Systems for 
Utilization in Manufactured Housing, 2012; IBR approved for Sec.  
3280.404(b) and (e).
    (6) AAMA/WDMA/CSA 101/I.S.2/A440-17 North American Fenestration 
Standard/Specification for Windows, Doors, and Skylights, 2017; IBR 
approved for Sec. Sec.  3280.304(b); 3280.403(b) and (e); 3280.404(b) 
and (e); 3280.405(b) and (e).
    (t) HUD User, 11491 Sunset Hills Road, Reston, VA 20190-5254; 
telephone 800-245-2691; website: www.huduser.gov.
    (1) HUD User No. 0005945, Overall U-values and Heating/Cooling 
Loads--Manufactured Homes, February 1992; IBR approved for Sec.  
3280.508(b).
    (2) [Reserved]
    (u) IIT Research Institute (IITRI), 10 West 35th Street, Chicago, 
IL 60616; telephone: 312-567-4000; website: www.iitri.org/.
    (1) IITRI Fire and Safety Research Project J-6461 ``Development of 
Mobile Home Fire Test Methods to Judge the Fire-Safe Performance of 
Foam Plastic Sheathing and Cavity Insulation'', 1979; IBR approved for 
Sec.  3280.207(a).
    (2) [Reserved]
    (v) International Association of Plumbing and Mechanical Officials 
(IAPMO), 4755 East Philadelphia Street, Ontario, CA 91716; telephone: 
909-472-4100; fax: 909-472-4150; website: www.iapmo.org.
    (1) IAPMO PS 2-89, Material and Property Standard for Cast Brass 
and Tubing P-Traps; IBR approved for Sec.  3280.604(c).
    (2) IAPMO PS 4-90, Material and Property Standard for Drains for 
Prefabricated and Precast Showers; IBR approved for Sec.  3280.604(c).
    (3) IAPMO PS 5-84, Material and Property Standard for Special Cast 
Iron Fittings; IBR approved for Sec.  3280.604(c).
    (4) IAPMO PS 9-84, Material and Property Standard for Diversion 
Tees and Twin Waste Elbow; IBR approved for Sec.  3280.604(c).
    (5) IAPMO PS 14-89, Material and Property Standard for Flexible 
Metallic Water Connectors; IBR approved for Sec.  3280.604(c).
    (6) IAPMO PS 23-89, Material and Property Standard for Dishwasher 
Drain Airgaps; IBR approved for Sec.  3280.604(c).
    (7) IAPMO PS 31-91, Material and Property Standards for Backflow 
Prevention Assemblies; IBR approved for Sec.  3280.604(c).
    (8) IAPMO TSC 9-2003, Standard for Gas Supply Connectors for 
Manufactured Homes, 2003; IBR approved for Sec.  3280.703(c).
    (9) IAPMO TSC 22-85, Standard for Porcelain Enameled Formed Steel 
Plumbing Fixtures; IBR approved for Sec.  3280.604(c).
    (w) International Code Council Evaluation Service (ICC-ES), 3060 
Saturn Street, Suite 100, Brea, CA 92821; telephone: 800-423-6587; fax: 
562-695-4694; website: www.icc-es.org.
    (1) ESR 1539-2014, ICC-ES Evaluation Report, Power Driven Staples 
and Nails, 2014; IBR approved for Sec.  3280.304(b).
    (2) [Reserved]
    (x) International Organization for Standardization/International 
Electrotechnical Commission, Chemin de Blandonnet 8, CP 401--1214 
Vernier, Geneva, Switzerland; telephone: +41 22 749 01 11; website: 
www.iso.org.
    (1) ISO/IEC 17065-2012 Conformity Assessment--Requirements for 
Bodies Certifying Products, Processes and Services, 2012; IBR approved 
for Sec.  3280.403(e); 3280.404(e); 3280.405(e).
    (2) [Reserved]
    (y) Military Specifications and Standards, Naval Publications and 
Forms Center (MIL), 5801 Tabor Avenue, Philadelphia, PA 19120; website: 
www.dsp.dla.mil/
    (1) MIL-L-10547E-1975, Liners, Case, and Sheet, Overwrap; Water-
Vapor Proof or Waterproof, Flexible; IBR approved for Sec.  
3280.611(d).
    (2) [Reserved]
    (z) National Electrical Manufacturers Association (NEMA), 1300 
North 17th Street, Suite 1752, Arlington, VA 22209; telephone: 703-841-
3200; fax: 703-841-5900; website: www.nema.org/Pages/default.aspx.
    (1) ANSI/NEMA WD-6-1997 Wiring Devices-Dimensional Specifications; 
IBR approved for Sec.  3280.803(f).
    (2) [Reserved]
    (aa) National Fenestration Rating Council (NFRC), 6305 Ivy Lane, 
Suite 140, Greenbelt, MD 20770; telephone: 301-589-1776; fax: 301-589-
3884; website: www.nfrc.org.
    (1) NFRC 100, Procedure for Determining Fenestration Product U-
factors, 1997 Edition; IBR approved for Sec.  3280.508(e).
    (2) [Reserved]
    (bb) National Fire Protection Association (NFPA), 1 Batterymarch 
Park, Quincy, MA 02269; telephone: 617-770-3000; fax: 617-770-0700; 
website: www.nfpa.org.
    (1) NFPA 13D-2010, Standard for the Installation of Sprinkler 
Systems in One and Two Family Dwellings and Manufactured Homes, 2010 
Edition; IBR approved for Sec.  3280.214(b), (e) and (o).
    (2) NFPA 31-2011, Installation of Oil-Burning Equipment, 2011; IBR 
approved for Sec. Sec.  3280.703(d); 3280.707(f).
    (3) NFPA 54/ANSI Z223.1, National Fuel Gas Code, 2015; IBR approved 
for Sec.  3280.703(d).
    (4) NFPA 58-2014, Standard for the Storage and Handling of 
Liquefied Petroleum Gas, 2014 Edition, 2014; IBR approved for Sec.  
3280.703(d).
    (5) NFPA 70-2014, National Electrical Code, 2014; IBR approved for 
Sec. Sec.  3280.607(c); 3280.801(a) and (b); 3280.803(k); 3280.804(a) 
and (k); 3280.805(a); 3280.806(a) and (d); 3280.807(c); 3280.808(a), 
(l), and (p); 3280.810(b); 3280.811(b).
    (6) NFPA 90B-2015, Warm Air Heating and Air Conditioning Systems, 
2015; IBR approved for Sec.  3280.703(d).
    (7) NFPA 220, Standard on Types of Building Construction, Chapter 
2: definitions of ``limited combustible'' and ``noncombustible 
material'', 1995 Edition; IBR approved for Sec.  3280.202.
    (8) NFPA 253, Standard Method of Test for Critical Radiant Flux of 
Floor Covering Systems Using a Radiant Heat Energy Source, 2000; IBR 
approved for Sec.  3280.207(c).
    (9) NFPA 255, Standard Method of Test of Surface Burning 
Characteristics of Building Materials, 1996; IBR approved for 
Sec. Sec.  3280.203(a); 3280.207(a).
    (10) NFPA 720, Standard for Installation of Carbon Monoxide 
Detection (CO) Detection and Warning Equipment, 2015 Edition; IBR 
approved for Sec.  3280.211(b).
    (cc) U.S. Department of Commerce, National Institute of Standards 
and

[[Page 43146]]

Technology (NIST), Office of Engineering Standards, Room A-166, 
Technical Building, Washington, DC 20234 and Voluntary Product 
Division, 100 Bureau Drive, Stop 2100, Gaithersburg, MD 20899-2100; 
telephone: 301- 975-4000; fax: 301-975-4715; website: www.nist.gov.
    (1) PS 1-95, Construction and Industrial Plywood (With Typical APA 
Trademarks); IBR approved for Sec.  3280.304(b).
    (2) Voluntary Product Standard PS 2-04, Performance Standard for 
Wood-Based Structural-Use Panels, December 2004; IBR approval for Sec.  
3280.304(b).
    (dd) National Sanitation Foundation (NSF), 789 North Dixboro Road, 
Ann Arbor, MI 48105; telephone: 734-769-8010 fax: 734-769-0109; 
website: www.nsf.org.
    (1) ANSI/NSF 14-1990, Plastic Piping Components and Related 
Materials; IBR approved for Sec.  3280.604(c).
    (2) ANSI/NSF 24-1988, Plumbing System Components for Manufactured 
Homes and Recreational Vehicles; IBR approved for Sec.  3280.604(c).
    (3) ANSI/NSF 61-2001, Drinking Water System Components-Health 
Effects; IBR approved for Sec.  3280.604(b).
    (ee) Resources, Applications, Designs, & Controls (RADCO), 3220 
East 59th Street, Long Beach, CA 90805; telephone: 562-272-7231; fax: 
562-529-7513; website: www.radcoinc.com.
    (1) RADCO DS-010-91, Decorative Gas Appliances for Installation in 
Solid Fuel Burning Fireplaces, May 1991; IBR approved for Sec.  
3280.703(a).
    (2) [Reserved]
    (ff) Society of Automotive Engineers (SAE), 400 Commonwealth Drive, 
Warrendale, PA 15096; telephone: 724-776-0790; website: www.sae.org/.
    (1) SAE J533b-2007, Flares for Tubing, 2007; IBR approved for 
Sec. Sec.  3280.703(d); 3280.705(f).
    (2) [Reserved]
    (gg) Steel Joist Institute (SJI), 234 West Cheves Street, Florence, 
SC 29501; telephone: 843-407-4091; website: www.steeljoist.org.
    (1) Standard Specifications Load Tables and Weight Tables for Steel 
Joists and Girders, SJI 1994, Fortieth Edition; IBR approved for Sec.  
3280.304(b).
    (2) [Reserved]
    (hh) Truss Plate Institute (TPI), 2670 Crain Highway, Suite 203, 
Waldorf, MD 20601; telephone: 240-587-5582; fax: 866-501-4012; website: 
www.tpinst.org.
    (1) TPI 1-2007 National Design Standard for Metal Plate Connected 
Wood Truss Construction, 2007; IBR approved for Sec.  3280.304(b).
    (2) [Reserved]
    (ii) Underwriters' Laboratories, Inc. (UL), 333 Pfingsten Road, 
Northbrook, IL 60062; telephone: 847-272-8800; fax: 847-509-6257; 
website: www.ul.com.
    (1) UL 94-1996, with 2001 revisions, Test for Flammability of 
Plastic Materials for Parts in Devices and Appliances, Fifth Edition; 
IBR approved for Sec.  3280.715(e).
    (2) UL 103-2010, Chimneys, Factory-Built Chimneys Residential Type 
& Building Heating Appliance, 2010; IBR approved for Sec.  3280.703(d).
    (3) UL 109-2005, Tube Fittings for Flammable and Combustible 
Fluids, Refrigeration Service, and Marine Use, 2005; IBR approved for 
Sec.  3280.703(d).
    (4) UL 127-1996, with 1999 revisions, Factory-Built Fireplaces, 
Seventh Edition; IBR approved for Sec.  3280.703(d).
    (5) UL 174-2004, Household Electric Storage Tank Water Heaters, 
2004; IBR approved for Sec.  3280.703(a).
    (6) UL 181-2013, Factory-Made Air Ducts & Air Connectors, 2013; IBR 
approved for Sec. Sec.  3280.702, 3280.703(d); 3280.715(a) and (e).
    (7) UL 181A-2013, Closure Systems for Use with Rigid Air Ducts and 
Air Connectors, 2013; IBR approved for Sec. Sec.  3280.703(d); 
3280.715(c).
    (8) UL 181B, 1995, with 1998 revisions, Standard for Safety Closure 
Systems for use with Flexible Air Ducts and Air Connectors, First 
Edition; IBR approved for Sec. Sec.  3280.703(d); 3280.715(c).
    (9) UL 217, Single and Multiple Station Smoke Alarms, Fifth 
Edition, dated January 4, 1999; IBR approved for Sec. Sec.  
3280.208(a); 3280.211(a).
    (10) UL 263-2014, Fire Tests of Building Construction Materials, 
2014; IBR approved for Sec.  3280.215(a) and (d).
    (11) UL 268-1999, Smoke Detectors for Fire Protective Signaling 
Systems, 1999; IBR approved for Sec. Sec.  3280.209(a); 3280.703(a).
    (12) UL 307A-2009, Liquid Fuel Burning Heating Appliances for 
Manufactured Homes & Recreational Vehicles, 2009; IBR approved for 
Sec. Sec.  3280.703(a); 3280.707(f).
    (13) UL 307B-2009, Gas Burning Appliances for Manufactured Homes & 
Recreational Vehicles, 2009; IBR approved for Sec.  3280.703(a).
    (14) UL 311, 1994, with 1998 revisions, Roof Jacks for Manufactured 
Homes and Recreational Vehicles, Eighth Edition; IBR approved for Sec.  
3280.703(d).
    (15) UL 441-2010, Gas Vents, 2010; IBR approved for Sec.  
3280.703(d).
    (16) UL 499-2014, Standard for Electrical Heating Appliances, 
Edition 2014; IBR approved for Sec.  3280.703(a).
    (17) UL 569-2013, Pigtails & Flexible Hose Connectors for LP Gas, 
2013; IBR approved for Sec. Sec.  3280.703(d); 3280.705(l).
    (18) UL 737, 1996, Fireplace Stoves, Eight Edition, with 2000 
revisions; IBR approved for Sec.  3280.703(d).
    (19) UL 923 Microwave Cooking Appliances, Fifth Edition, May 23, 
2002; IBR approved for Sec.  3280.204(c).
    (20) UL 1042-2009, Electric Baseboard Heating Equipment, 2009; IBR 
approved for Sec.  3280.703(a).
    (21) UL 1096, 1986, Electric Central Air Heating Equipment, Fourth 
Edition with revisions July 16, 1986, and January 30, 1988; IBR 
approved for Sec.  3280.703(a).
    (22) UL 1479-2014, Standard for Fire Tests of Penetration 
Firestops, Fourth Edition, May 16, 2014; IBR approved for Sec.  
3280.215(d).
    (23) UL 1482, 1996, with 2000 revisions, Solid-Fuel Type Room 
Heaters, Fifth Edition; IBR approved for Sec.  3280.703(d).
    (24) UL 1995-2011, Heating and Cooling Equipment, 2011; IBR 
approved for Sec.  3280.703(a).
    (25) UL 2021-1997. Fixed and Location-Dedicated Electric Room 
Heaters, Second Edition, with 1998 revisions; IBR approved for Sec.  
3280.703(a).
    (26) ANSI/UL 2034-2016, Standard for Single and Multiple Station 
Carbon Monoxide Alarms, Third Edition, dated February 28, 2008 
(including revisions through May 11, 2016); IBR approved for Sec. Sec.  
3280.209(a); 3280.211(a); 3280.703(a).
    (27) UL 60335-2-34-2012, Standard for Household and Similar 
Electrical Appliances--Safety, Part 2-34: Particular Requirements for 
Motor-Compressors, 2012; IBR approved for Sec.  3280.703(a).
    (jj) Underwriters' Laboratories of Canada (ULC), 7 Underwriters 
Road, Toronto, Ontario, Canada M1 R 3A9; telephone: 866-937-3852; fax: 
416-757-8727; website: www.ul.com/canada/eng/pages/.
    (1) CAN/ULC S102.2-M88, Standard Method of Test for Surface Burning 
Characteristics of Floor Coverings and Miscellaneous Materials and 
Assemblies, Fourth Edition, April 1988; IBR approved for Sec.  
3280.207(b).
    (2) [Reserved]
    (kk)--Window and Door Manufacturers Association (WDMA), 2001 K 
Street NW, 3rd Floor North, Washington, DC 20006; telephone: 202-367-
1157; website: www.wdma.com.
    (1) WDMA I.S.4-2009 Industry Specification for Preservative 
Treatment for Millwork; IBR approved for Sec.  3280.405(c).
    (2) [Reserved]
0
4. Amend Sec.  3280.5 as follows:
0
a. Revise the first sentence of the introductory text; and

[[Page 43147]]

0
b. In paragraph (g), remove the text ``ASCE/SEI 7-88'' and add, in its 
place, ``ASCE/SEI 7-05''.
    The revision reads as follows:


Sec.  3280.5   Data Plate.

    Each dwelling unit of a manufactured home must bear a data plate 
affixed in a permanent manner near the main electrical panel or other 
readily accessible and visible location. * * *
* * * * *
0
5. Revise Sec.  3280.102 to read as follows:


Sec.  3280.102   Definitions.

    Air, exhaust means air discharged from any space to the outside by 
an exhaust system.
    Air, outdoor means air from outside the building taken into a 
ventilation system or air from outside the building that enters a space 
through infiltration or natural ventilation openings.
    Exhaust system means one or more exhaust fans that remove air from 
the building, causing outdoor air to enter by ventilation inlets or 
normal leakage paths through the building envelope.
    Gross floor area means all space, wall to wall, including recessed 
entries not to exceed five (5) square feet and areas under built-in 
vanities and similar furniture. When the ceiling height is less than 
that specified in Sec.  3280.104, the floor area under such ceilings 
must not be included in the gross floor area. Floor area of closets 
must also not be included in the gross floor area.
    Habitable room means a room or enclosed floor space arranged for 
living, eating, food preparation, or sleeping purposes not including 
bathrooms, foyers, hallways, and other accessory floor space.
    Laundry area means an area containing or designed to contain a 
laundry tray, clothes washer and/or clothes dryer.
    Mechanical ventilation means the active process of supplying air to 
or removing air from an indoor space by powered equipment such as 
motor-driven fans and blowers but not by devices such as wind-turbine 
ventilators and mechanically operated windows.
    Natural ventilation means ventilation occurring as a result of 
natural forces, such as wind pressure or differences in air density, 
through intentional openings such as open windows or doors.
    Supply system means one or more fans that supply outdoor air to the 
building, causing indoor air to leave by normal air leakage through the 
building envelope.
    Ventilation means the process of supplying outdoor air to or 
removing indoor air from the manufactured home by natural or mechanical 
means. Such air may or may not have been conditioned.
0
6. Amend Sec.  3280.103 as follows:
0
a. Revise introductory text of paragraph (b) and paragraphs (b)(1) and 
(3), (c) and (3), and (d); and
0
b. Add paragraph (e).
    The revisions and addition read as follows:


Sec.  3280.103   Light and Ventilation.

* * * * *
    (b) Whole-house ventilation. Each dwelling unit of a manufactured 
home must be provided with a whole-house mechanical ventilation having 
the capability to provide a minimum capacity of 0.035 ft\3\/min/ft\2\ 
of interior floor space or its hourly average equivalent. This 
ventilation capacity must be in addition to any openable window area. 
In no case shall the installed ventilation capacity of the system be 
less than 50 cfm. The following criteria must be adhered to:
    (1) The ventilation capacity must be provided by a mechanical 
ventilation system or a combination natural and mechanical ventilation 
system.
* * * * *
    (3) The ventilation supply system or a portion of the ventilation 
supply system is permitted to be integral with the home's heating or 
cooling system. The supply system must be capable of operating 
independently of the heating and cooling modes. A mechanical 
ventilation supply system that is integral with the heating and cooling 
system is to be listed as part of the heating and cooling system or 
listed as suitable for use with that system.
* * * * *
    (c) * * *
    (2) Kitchens must be provided with a local exhaust system that is 
capable of exhausting 100 cfm to the outside of the home. The local 
exhaust system must be located as close as possible to the range or 
cook top, but in no case farther than 3 feet horizontally from the 
range or cooktop.
    (3) Each bathroom and separate toilet compartment must be provided 
with a local exhaust system capable of exhausting 50 cfm to the outside 
of the home. A separate toilet compartment may be provided with 1.5 
square feet of openable glazed area in place of mechanical ventilation, 
except in Uo value Zone 3.
* * * * *
    (e) Airflow rating. During the design stage, the airflow rating at 
a pressure of 0.25 inch water column may be used, provided the duct 
sizing meets the prescriptive requirements of Table 5.3 in ANSI/ASHRAE 
62.2 (incorporated by reference, see Sec.  3280.4) or ventilation 
system manufacturer's design criteria.
0
7. Amend Sec.  3280.105 as follows:
0
a. Revise the introductory text of paragraph (a); and
0
b. Revise paragraphs (a)(2)(i) and (b)(2).
    The revisions read as follows:


Sec.  3280.105   Exit facilities; exterior doors.

    (a) Number and location of exterior doors. Each dwelling unit of a 
manufactured home must have a minimum of two exterior doors located 
remotely from each other.
* * * * *
    (2) * * *
    (i) Both of the required doors must not be in the same room.
* * * * *
    (b) * * *
    (2) All exterior swinging doors must provide a minimum 28 inch wide 
by 74 inch high clear opening. All exterior sliding glass doors must 
provide a minimum 28 inch wide by 72 inch high clear opening. One 
exterior door must provide a minimum of 32 inch wide by 74 inch high 
clear opening.
* * * * *
0
8. Amend Sec.  3280.109 by revising paragraph (a) to read as follows:


Sec.  3280.109   Room requirements.

    (a) Each dwelling unit of a manufactured home must have a minimum 
of 150 square feet of gross floor area.
* * * * *
0
9. Revise Sec.  3280.112 to read as follows:


Sec.  3280.112   Hallways.

    Hallways must have a minimum horizontal dimension of 28 inches 
measured from the interior finished surface to the interior finished 
surface of the opposite wall. For manufactured homes with 14 feet of 
inside width or more, hallways must have a minimum horizontal dimension 
of 30 inches measured from the interior finished surface to the 
interior finished surface of the opposite wall. When appliances are 
installed in a laundry area, the measurement must be from the front of 
the appliance to the opposite finished exterior surface. When 
appliances are not installed and a laundry area is provided, the area 
must have a minimum clear depth of 27 inches in addition to the 28 
inches or 30 inches (for manufactured homes with14 feet of inside width 
or greater) required for passage. In addition, a notice of the 
available clearance for washer/dryer

[[Page 43148]]

units must be posted in the laundry area. Minor protrusions into the 
minimum hallway width by doorknobs, trim, smoke alarms or light 
fixtures are permitted.
0
10. Amend Sec.  3280.113 by revising paragraph (d) to read as follows:


Sec.  3280.113   Glass and glazed openings.

* * * * *
    (d) Safety glazing is any glazing material capable of meeting the 
requirements of Consumer Product Safety Commission 16 CFR part 1201, or 
Standard for Safety Glazing Materials used in Buildings--Safety 
Performance Specifications and Methods of Test for Safety Glazing 
Materials Used in Buildings, ANSI Z97.1 (incorporated by reference, see 
Sec.  3280.4).
* * * * *
0
11. Add Sec.  3280.115 to subpart B to read as follows:


Sec.  3280.115   Sound transmission between multi-dwelling unit 
manufactured homes.

    (a) Scope. This section applies to common interior walls, 
partitions, and floor/ceiling assemblies between adjacent dwelling 
units.
    (b) Air-borne sound. Walls, partitions, and floor/ceiling 
assemblies between stories separating dwelling units from each other 
must have a sound transmission class (STC) of not less than 34 for air-
borne noise when tested in accordance with ASTM E90 (incorporated by 
reference, see Sec.  3280.4) or calculated. Penetrations or openings in 
construction assemblies for piping; electrical devices; recessed 
cabinets; bathtubs; soffits; or heating, ventilating, or exhaust ducts 
must be sealed, lined, insulated or otherwise treated to maintain the 
required ratings. This requirement does not apply to dwelling unit 
entrance doors; however, such doors must be tight fitting to the frame 
and sill.
    (c) Structure-borne sound. Floor/ceiling assemblies between stories 
separating dwelling units must have an impact insulation class (IIC) 
rating of not less than 34 when tested in accordance with ASTM E492 
(incorporated by reference, see Sec.  3280.4).
0
12. Amend Sec.  3280.203 by revising (c)(1)(ii) to read as follows:


Sec.  3280.203   Flame spread limitations and fire protective 
requirements.

* * * * *
    (c) * * *
    (1) * * *
    (ii) Exposed bottoms and sides of kitchen cabinets as required by 
Sec.  3280.204 except that non-horizontal surfaces above the horizontal 
plane formed by the bottom of the range hood are not considered 
exposed;
* * * * *
0
13. Amend Sec.  3280.204 by revising the first sentence of paragraph 
(a) and adding paragraph (f) to read as follows:


Sec.  3280.204   Kitchen cabinet protection.

    (a) The exposed bottom and sides of combustible kitchen cabinets 
over cooking ranges to a horizontal distance of 6 inches from the 
outside edge of the cooking range must be protected with at least 5/16 
inch thick gypsum board or equivalent limited combustible material. * * 
*
* * * * *
    (f) Range hood finish materials must be installed with at least 5/
16 inch thick gypsum board or equivalent limited combustible material 
between the metal range hood and finish materials. Except for sealants 
and other trim materials 2 inches or less in width, finish materials 
shall have a flame spread rating not exceeding the Flame Spread Index 
of 200.
0
14. Amend Sec.  3280.209 by revising paragraph (a) to read as follows:


Sec.  3280.209   Smoke alarm requirements.

    (a) Labeling. Each smoke alarm required under paragraph (b) of this 
section must conform with the requirements of UL 217 (incorporated by 
reference, see Sec.  3280.4), or ANSI/UL 268 (incorporated by 
reference, see Sec.  3280.4), and must bear a label to evidence 
conformance. Combination smoke and carbon monoxide alarms shall be 
listed and must bear a label to evidence conformance with UL 217 
(incorporated by reference, see Sec.  3280.4) and ANSI/UL 2034 
(incorporated by reference, see Sec.  3280.4).
* * * * *
0
15. Add Sec. Sec.  3280.214 through 3280.216 to subpart C to read as 
follows:


Sec.  3280.214   Fire sprinkler system requirements.

    (a) General. (1) Fire Sprinkler systems are not required by this 
subpart; however, when a manufacturer installs a fire sprinkler system, 
this section establishes the requirements for the installation of a 
fire sprinkler system in a manufactured home.
    (2) This section applies to both stand-alone and multipurpose fire 
sprinkler systems that do not include the use of antifreeze.
    (3) A back-flow preventer is not required to separate a stand-alone 
sprinkler system from the water distribution system.
    (b) Design. The design of the fire sprinkler system itself shall be 
in accordance with NFPA 13D (incorporated by reference, see Sec.  
3280.4) or a section which is deemed to be equivalent to the design 
method used in NFPA 13D.
    (c) Sprinkler Location. Sprinklers must be installed to protect all 
areas inside the manufactured home except:
    (1) Attics and normally unoccupied concealed spaces;
    (2) Closets not exceeding 24 square feet in area, with the smallest 
dimension not greater than three feet and having at least one base 
layer of minimum 5/16 inch thick gypsum board on wall and ceiling 
surfaces;
    (3) Bathrooms not more than 55 square feet in area; and,
    (4) Garages, carports, open attached porches and similar 
structures; and
    (5) Closets or alcoves containing heat-producing appliance, 
regardless of size if the closet or alcove complies with Sec.  
3280.203(b)(3).
    (d) Sprinklers. Sprinklers shall be new listed residential 
sprinklers and shall be installed in accordance with the sprinkler 
manufacturer's installation instructions.
    (e) Temperature rating and separation from heat sources. Sprinklers 
are to have a temperature rating and be separated from heat sources as 
follows:
    (1) Sprinklers are to a have a temperature rating of no less than 
135 [deg]F (57[deg]C) and not more than 170 [deg]F (77[deg]C) and be 
separated from heat sources as required by the sprinkler manufacturer's 
installation instructions.
    (2) Sprinklers are to have an intermediate temperature rating not 
less than 175 [deg]F (79[deg]C) and not more than 225 [deg]F 
(107[deg]C) and be located within the distance to a heat source as 
specified in Table 7.5.5.3 of NFPA 13D (incorporated by reference, see 
Sec.  3280.4) when installed in:
    (i) attics;
    (ii) concealed spaces located directly beneath a roof; and
    (iii) directly under skylights where the sprinkler is exposed to 
direct sunlight.
    (f) Freezing areas. Piping must be protected from freezing as 
required by Sec.  3280.603(b)(4). Where sprinklers are required in 
areas subject to freezing, dry-sidewall or dry-pendent sprinklers 
extending from nonfreezing area into a freezing area, must be 
installed.
    (g) Sprinkler area of coverage. The area of coverage of a single 
sprinkler shall not exceed 400 square feet and shall be based on the 
sprinkler listing and the sprinkler manufacturer's installation 
instructions. Sprinkler discharge shall not be blocked by obstructions 
unless additional sprinklers are installed to protect the obstructed 
area. Sprinkler separation

[[Page 43149]]

from obstructions shall comply with the minimum distances specified in 
the sprinkler manufacturer's instructions. Pendent sprinklers within 3 
feet of the center of a ceiling fan, surface-mounted ceiling light or 
other similar object shall be considered to be obstructed and 
additional sprinklers shall be installed, except that in all closets 50 
square feet or less in size, one sprinkler shall be sufficient. 
Sidewall sprinklers within 5 feet of the center of a ceiling fan, 
surface-mounted ceiling light or other similar object shall be 
considered to be obstructed and additional sprinklers shall be 
installed.
    (h) Sprinkler installation on systems assembled with solvent 
cement. The solvent cementing of threaded adapter fittings shall be 
completed and threaded adapters for sprinklers shall be verified as 
being clear of excess cement prior to the installation of sprinklers on 
systems assembled with solvent cement.
    (i) Painting, caulking or modifying sprinklers is prohibited. 
Painted, caulked, modified, or damaged sprinklers shall be replaced.
    (j) Sprinkler piping support. Sprinkler piping shall be supported 
in accordance with Sec.  3280.608. Sprinkler piping must comply with 
all requirements for cold-water distribution piping. For multipurpose 
piping systems, the sprinkler piping shall connect to and be part of 
the cold-water distribution piping system. Nonmetallic pipe and tubing, 
such as CPVC and PEX, shall be listed for use in residential fire 
sprinkler systems. Nonmetallic pipe and tubing systems shall be 
protected from exposure to the living space by a layer of not less than 
5/16 inch thick gypsum wallboard, \1/2\ inch thick plywood, or other 
material having a 15 minute fire rating. Pipe protection shall not be 
required where exposed piping is permitted by the pipe listing and in 
areas that do not require protection with sprinklers as specified in 
paragraph (c) of this section.
    (k) Shutoff valves. Shutoff valves shall not be installed in any 
location where the valve would isolate piping serving one or more 
sprinklers, except for shutoff valves installed for the entire water 
distribution system.
    (l) Means of drainage. A means to drain the sprinkler system shall 
be provided on the system side of the water supply inlet.
    (m) Minimum flow rate. The sprinkler system must provide at least 
the flow rate required to produce a minimum discharge density of 0.05 
gpm/ft\2\ from each sprinkler and be determined by using the sprinkler 
manufacturer's published data for the specific sprinkler model based on 
the area of coverage, ceiling configuration, temperature rating and any 
other conditions specified by the sprinkler manufacturer.
    (n) Design flow rate. The design flow rate for the sprinkler system 
shall be based on the following:
    (1) The design flow rate for a room having only one sprinkler shall 
be the flow rate required for that sprinkler, as determined by 
paragraph (m) of this section.
    (2) The design flow rate for a room having two or more sprinklers 
shall be determined by identifying the sprinkler in that room with the 
highest required flow rate, based on paragraph (m) of this section, and 
multiplying that flow rate by two.
    (3) Where the sprinkler manufacturer's instructions specify 
different criteria for ceiling configurations that are not smooth, flat 
and horizontal, the required design flow rate for the room shall comply 
with the sprinkler manufacturer's instructions.
    (4) The design flow rate for the sprinkler system shall be the flow 
required by the room with the largest flow rate, based on paragraph 
(n)(1), (2), or (3) of this section.
    (5) For the purposes of this section, it shall be permissible to 
reduce the design flow rate for a room by subdividing the space into 
two or more rooms, where each room is evaluated separately with respect 
to the required design flow rate. Walls and a ceiling shall bound each 
room. Openings in walls shall have a lintel (header) not less than 8 
inches in depth and each lintel shall form a solid barrier between the 
ceiling and the top of the opening.
    (o) Pipe sizing and minimum required supply pressure. (1) The 
piping to sprinklers shall be sized for the flow required by paragraph 
(n) of this section. The flow rate required to supply the plumbing 
fixtures shall not be required to be added to the sprinkler design flow 
rate. The minimum pipe size from the water supply inlet to any 
sprinkler shall be \3/4\ inch diameter. Threaded adapter fittings at 
the point where sprinklers are attached to the piping shall be a 
minimum of \1/2\ inch diameter.
    (2) Piping shall be sized by determining the available pressure to 
offset friction loss in piping and identifying a piping material, 
diameter and length in accordance with the following:
    (i) Minimum Supply Pressure Required. The following equation shall 
be used to determine the required supply pressure at the fire sprinkler 
system supply inlet.
    Equation 1 to paragraph (o)(2)

PSUP = PT+PLE+PSP

Where:

PSUP = Pressure required at the fire sprinkler system supply inlet. 
(Note: This is the pressure which is entered on the Fire Sprinkler 
System Certificate under ``Minimum Water Supply Required.'')
PT = Pressure loss in the fire sprinkler system piping.
PLE = Pressure loss from elevation change. (Note: Normally 4.4 psi 
for single story houses and 8.7 psi for two story houses).
PSP = Maximum pressure required by a sprinkler.

    (ii) [Reserved]
    (3) Determination of PSUP shall be in accordance with the following 
procedure:
    (i) Step 1. Determine PT. For the specific design in question 
determine the distance (developed length) from the fire sprinkler 
system supply inlet to the most remote sprinkler. Refer to Tables 
8.4.10.2(a) through (i) of NFPA 13D (incorporated by reference, see 
Sec.  3280.4) and select the correct table for the fire sprinkler 
system pipe material and pipe size used. Using the system design flow 
rate from paragraph (m) of this section find the ``Allowable length of 
pipe'' column which is closest to, but not less than, the developed 
length for the design in question. The ``Allowable Pressure'' in the 
column heading is PT. (Note: Interpolation between ``Allowable length 
of pipe'' (developed length) and ``Available Pressure'' (PT) is 
permitted. Example: Using Table 8.4.10.2(d) of NFPA 13D, Sprinkler Flow 
Rate = 16 gpm, developed length = 70 feet, Available Pressure (PT) = 
17.5 psi)
    (ii) Step 2. Determine PLE. Refer to Table 8.4.10.2.(c) of the NFPA 
13D. The elevation used in applying the table shall be the difference 
between the highest sprinkler and the fire sprinkler system supply 
inlet. Interpolation is permitted. (Note: If the highest sprinkler is 
lower than the fire sprinkler system supply inlet then subtract this 
value in equation 1 to paragraph (o)(2) of this section, instead of 
adding it.)
    (iii) Step 3. Determine PSP. Determine the maximum pressure 
required by any individual sprinkler based on the flow rate for each 
sprinkler as set forth in paragraph (m) of this section. The required 
pressure is provided in the data provided by the sprinkler manufacturer 
for the specific model based on the selected flow rate.
    (p) Testing. The fire sprinkler system piping shall be subject to 
the same test as the water distribution system in Sec.  3280.612(a). 
For multipurpose fire sprinkler systems, it shall be permitted to test 
the fire sprinkler system piping simultaneously with the domestic water 
distribution system.

[[Page 43150]]

    (q) Fire Sprinkler System Certificate. The manufacturer must 
permanently affix a Fire Sprinkler System Certificate adjacent to the 
data plate. The manufacturer must specify on the Fire Sprinkler System 
Certificate the minimum required pressure in pounds per square inch 
(psi) and flow rate in gallons per minute (gpm) for the water supply 
system. The Fire Sprinkler System Certificate is to include all the 
statements and required information arranged in substantially the same 
layout as shown in the following example.
BILLING CODE 4210-67-P

[[Page 43151]]

[GRAPHIC] [TIFF OMITTED] TP19JY22.000


[[Page 43152]]


[GRAPHIC] [TIFF OMITTED] TP19JY22.001

BILLING CODE 4210-67-C
    (r) Sign or valve tag. A sign or valve tag shall be installed at 
the fire sprinkler system supply inlet stating the following:
    Warning, the water supply system supplies fire sprinklers that 
require specific flows and pressures to fight a fire. Devices that 
restrict the flow or decrease the pressure or automatically shut off 
the water to the fire sprinkler system, such as water filtration 
systems, water softeners and automatic shutoff valves, shall not be 
added to this system without first contacting the home manufacturer or 
a fire protection specialist. Please do not remove this sign.
    (s) Component instructions. If the manufacturer of a fire sprinkler 
system component used in a system provides written instructions and 
procedures for the operation, maintenance, periodic testing, and/or 
repair of the component, a copy of the instructions and procedures 
shall be left in each home for the consumer.
    (t) Manufacturer's installation instructions for fire sprinkler 
systems. Manufacturer's installation instructions must provide the 
following:
    (1) Specific instructions for the inspection and testing of the 
fire sprinkler system during the installation of the home. Testing 
requirements are to be consistent with Sec.  3280.612(a).
    (2) Required statement. If this manufactured home contains a fire 
sprinkler system, the installer of the home shall verify that the water 
supply at the site meets the minimum conditions described on the Fire 
Sprinkler System Certificate in the home (located next to the data 
plate). The installer shall also complete the name, address and date on 
the Certificate.


Sec.  3280.215   Multi-dwelling unit manufactured homes.

    (a) General. In manufactured homes with more than one dwelling 
unit, each dwelling unit must be separated from each other by wall and 
floor assemblies having not less than a 1 hour fire resistance rating 
when tested in accordance with ASTM E119 or UL 263 (both incorporated 
by reference, see Sec.  3280.4) or having a fire resistance rating of 
not less than a 1 hour when calculated in accordance with Chapter 16 of 
the National Design Specification for Wood Construction, (AWS NDS) 
(incorporated by reference, see Sec.  3280.4).
    (b) Fire resistance walls. Fire-resistance-rated floor/ceiling and 
wall assemblies must extend to and be tight against the exterior wall, 
and wall assemblies must extend from the foundation to the underside of 
the roof sheathing except as follows:
    (1) Wall assemblies need not extend through attic spaces where the 
ceiling is protected by not less than \5/8\ inch Type X gypsum board 
and attic draftstop is constructed as specified in Sec.  3280.216 is 
provided above and along the wall assembly separating the dwelling 
units; and
    (2) The structural framing supporting the ceiling the ceiling is 
protected by not less than \1/2\ inch gypsum board or equivalent.
    (c) Supporting construction. Where floor assemblies are required to 
be fire resistant rated by this section, the supporting construction of 
such assemblies must have an equal or greater fire resistance rating.
    (d) Dwelling unit rated penetrations. Penetrations of wall or 
floor-ceiling assemblies in multi-dwelling unit manufactured homes are 
required to be fire-resistance rated in accordance with this section.

[[Page 43153]]

    (1) Through penetrations. (i) Through penetrations must be 
installed as tested in the approved fire-resistance rated assembly; or
    (ii) Through penetrations must be protected by an approved 
penetration fire stop system installed as tested in accordance with 
ASTM E814 or UL 1479 (incorporated by reference, see Sec.  3280.4), 
with a positive pressure differential of not less than 0.01 inch of 
water and must have an F rating of not less than the required fire 
resistance rating of the wall or floor-ceiling assembly penetrated; or
    (iii) Where the penetrating items are steel, ferrous or copper 
pipes, tubes, or conduits, the material used to fill the annular space 
must prevent the passage of flame and hot gasses sufficient to ignite 
cotton waste where subjected to ASTM E119 or UL 263 (incorporated by 
reference, see Sec.  3280.4) time temperature fire conditions under a 
positive pressure differential of not less than 0.01 inch of water at 
the location of the through penetration for the time period equivalent 
to the fire resistance rating of the construction penetrated.
    (2) Membrane penetrations. Membrane penetrations must comply with 
paragraph (d)(1) of this section. Where walls are required to have a 
fire resistance rating, recessed fixtures must be installed so that the 
required fire resistance rating will not be reduced except as follows:
    (i) By membrane penetrations of fire-resistant-rated walls, 
ceiling/floors and partitions by steel electrical boxes provided they 
do not exceed 16 square inches in area and the aggregate area of the 
openings through the membrane does not exceed 100 square inches in any 
100 square feet of wall area. The annular space between the wall 
membrane and the box must not exceed \1/8\ inch. Such boxes on opposite 
sides of the wall must be separated by one of the following:
    (A) A horizontal distance of not less than 24 inches where the wall 
or partition is constructed with individual non-communicating stud 
cavities; or
    (B) A horizontal distance of not less than the depth of the wall 
cavity, where the wall cavity is filled with cellulose loose-fill or 
other loose-fill insulation; or
    (C) Solid fire blocking in accordance with Sec.  3280.206; or
    (D) Protecting both boxes with listed putty pads; or
    (E) Other listed materials and methods.
    (ii) By membrane penetrations of listed electrical boxes of any 
materials provided that the boxes have been tested for use in fire 
resistance rated assemblies and are installed in accordance with the 
instructions included with the listing. The annular space between the 
wall membrane and the box must not exceed \1/8\ inch unless otherwise 
noted. Such boxes on opposite sides of the wall must be separated by 
one of the following:
    (A) The horizontal distance specified in the listing of the 
electrical boxes; or
    (B) Sold fire blocking in accordance with Sec.  3280.206; or
    (C) Protecting boxes with listed putty pads; or
    (D) Other listed materials and methods.
    (iii) By the annular space created by the penetration of a fire 
sprinkler provided that it is covered by a metal escutcheon plate.


Sec.  3280.216   Draftstopping requirements for multi-dwelling unit 
manufactured homes.

    (a) When there is usable space both above and below the concealed 
space of a floor/ceiling assembly in a multi-dwelling unit manufactured 
home, draftstops must be installed so that the area of the concealed 
space does not exceed 1000 square feet.
    (b) Draftstopping must divide the concealed space into 
approximately equal areas.
    (c) Where the assembly is enclosed by a floor membrane above and a 
ceiling membrane below, draftstopping must be provided in the floor/
ceiling assemblies:
    (1) When the ceiling is suspended under the floor framing; or
    (2) When the floor framing is constructed of truss type open-web or 
perforated members.
    (d) Draftstopping materials must not be less than \1/2\ inch gypsum 
board, \3/8\ inch wood structural panels, or other approved materials 
adequately supported.
    (e) Draftstopping must be installed parallel to the floor framing 
members.
    (f) The integrity of all draftstops must be maintained.
0
16. Amend Sec.  3280.303 by revising paragraph (b) to read as follows:


Sec.  3280.303   General requirements.

* * * * *
    (b) Construction. All Construction methods must be in conformance 
with an approved quality assurance manual as provided by Sec. Sec.  
3282.203 and 3282.361(c) and accepted engineering practices to ensure 
durable, livable, and safe housing.
* * * * *
0
17. Revise and republish Sec.  3280.304 to read as follows:


Sec.  3280.304   Materials.

    (a) Dimension and board lumber must not exceed 19 percent moisture 
content at the time of installation, except that treated lumber used 
for exterior purposes may have a moisture content exceeding 19 percent.
    (b) The standards for some of the generally used materials and 
methods of construction that are listed in this paragraph are 
incorporated by reference (see Sec.  3280.4).
    (1) Aluminum.
    (i) Aluminum Design Manual, Specifications and Guidelines for 
Aluminum Structures, Part 1-A (Aluminum Association).
    (ii) Aluminum Design Manual, Specifications and Guidelines for 
Aluminum Structures, Part 1-B (Aluminum Association).
    (2) Steel.
    (i) Specification for Structural Steel Buildings--AISC 360.
    (ii) North American Specification for the Design of Cold-Formed 
Steel Structural Members--AISI S100.
    (iii) Specification for the Design of Cold-Formed Stainless Steel 
Structural Members--SEI/ASCE 8.
    (iv) Standard Specifications Load Tables and Weight Tables for 
Steel Joists and Joist Girders, SJI.
    (v) Structural Applications of Steel Cables for Buildings--ASCE 19.
    (vi) Standard Specification for Strapping, Flat Steel and Seals--
ASTM D3953.
    (3) Wood and Wood Products.
    (i) Basic Hardboard--ANSI/AHA A135.4.
    (ii) Prefinished Hardboard Paneling--ANSI/AHA A135.5.
    (iii) Hardboard Siding--ANSI/AHA A135.6.
    (iv) American National Standard for Hardwood and Decorative 
Plywood--ANSI/HPVA HP-1.
    (v) Structural Design Guide for Hardwood Plywood Wall Panels--HPVA 
Design Guide HP-SG.
    (vi) Standard for Wood Products--Structural Glued Laminated 
Timber--ANSI/AITC A190.1.
    (vii) Construction and Industrial Plywood (With Typical APA 
Trademarks)--PS 1.
    (viii) APA Design/Construction Guide, Residential and Commercial--
APA E30-P.
    (ix) National Design Standard for Metal Plate Connected Wood Truss 
Construction, TPI-1.
    (x) APA Design & Fabrication of All-Plywood Beams--H815G.
    (xi) Panel Design Specification--APA D510C.
    (xii) Design & Fabrication of Glued Plywood-Lumber Beams--APA 
S812S.
    (xiii) Design & Fabrication of Plywood Curved Panels--APA-S811P.
    (xiv) Design & Fabrication of Plywood Sandwich Panels, APA U814J.

[[Page 43154]]

    (xv) Performance Standard for Wood-Based Structural Use Panels--
NIST PS 2.
    (xvi) Design & Fabrication of Plywood Stressed-Skin Panels,--APA-
U813M.
    (xvii) National Design Specifications for Wood Construction, with 
Supplement, Design Values for Wood Construction, AWC NDS.
    (xviii) Wood Structural Design Data, 1986 Edition with 1992 
Revisions, AFPA.
    (xix) Span Tables for Joists & Rafters--AWC PS-20-70.
    (xx) Design Values for Joists & Rafters, AWC.
    (xxi) Particleboard--ANSI A208.1.
    (xxii) North American Fenestration Standard/Specification for 
Windows, Doors and Skylights--AAMA/WDMA/CSA 101/I.S.2/A440.
    (xxiii) Standard Test Methods for Puncture and Stiffness of 
Paperboard, and Corrugated and Solid Fiberboard--ASTM D781.
    (xxiv) Standard Test Methods for Direct Moisture Content 
Measurement of Wood and Wood-Base Materials--ASTM D4442.
    (xxv) Standard Test Methods for Use and Calibration of Hand-Held 
Moisture Meters--ASTM D4444.
    (xxvi) Medium Density Fiberboard (MDF) For Interior Applications--
ANSI A208.2.
    (xxvii) Standard Test Methods for Fire Tests of Building 
Construction and Materials--ASTM E119.
    (xxviii) Engineered Wood Construction Guide--APA E30V.
    (xxix) Structural Plywood (with Typical APA Trademarks), APA PS 1.
    (xxx) Plywood Design Specification, APA Y510.
    (4) Other.
    (i) Standard Specification for Gypsum Board--ASTM C1396/C1396M.
    (ii) [Reserved].
    (5) Fasteners.
    (i) ICC-ES Evaluation Report, Power Driven Staples and Nails--ESR 
1539.
    (ii) [Reserved]
    (6) Unclassified.
    (i) Minimum Design Loads for Buildings and Other Structures, ASCE/
SEI 7.
    (ii) Standard for Safety Glazing Materials Used in Buildings--
Safety Performance Specifications and Methods of Test, ANSI Z97.1.
    (iii) Standard Specification for Rigid Poly (Vinyl Chloride) (PVC) 
Siding, ASTM D3679.
    (iv) Standard Practice for Installation of Rigid Poly (Vinyl 
Chloride) (PVC) Siding and Soffit, ASTM D4756.
    (v) Standard Specification for Polypropylene (PP) Siding, ASTM 
D7254.
    (c) Materials and methods of construction utilized in the design 
and construction of manufactured homes which are covered by the 
standards listed in this section, or any applicable portion thereof 
shall comply with these requirements.
    (d) Engineering analysis and testing methods contained in these 
references shall be utilized to judge conformance with accepted 
engineering practices required in Sec.  3280.303(c).
    (e) Materials and methods of installation conforming to these 
standards shall be considered acceptable when installed in conformance 
with the requirements of this part.
    (f) Materials meeting the standards listed in this section (or the 
applicable portion thereof) are considered acceptable unless otherwise 
specified herein or unless substantial doubt exists as to conformance.
    (g) Wood products shall be identified as complying with the 
appropriate standards.
0
18. Amend Sec.  3280.305 as follows:
0
a. Revise paragraph (c)(1)(ii)(A);
0
b. Designate the table immediately following paragraph (c)(1)(ii)(B) as 
table 1 to paragraph (c)(1)(ii)(B) and revise its column headings; and
0
c. Revise paragraphs (c)(2)(ii) and (iii); (j)(i) and (k)(2)
    The revisions read as follows:


Sec.  3280.305   Structural design requirements.

* * * * *
    (c) * * *
    (1) * * *
    (ii) * * *
    (A) The design wind pressures for Exposure C as specified in 
Minimum Design Loads for Buildings and Other Structures, ASCE/SEI 7 
(incorporated by reference, see Sec.  3280.4), for a fifty-year 
recurrence interval, and for an equivalent three-second gust wind speed 
of 140 mph, as specified for Wind Zone II, or 150 mph, as specified for 
Wind Zone III on the Basic Wind Zone Map for Manufactured Housing; or
    (B) * * *
    [GRAPHIC] [TIFF OMITTED] TP19JY22.015
    
* * * * *
    (2) * * *
    (ii) Wind Zone II. . . . .140 mph. The following areas are 
considered to be within Wind Zone II of the Basic Wind Zone Map:
BILLING CODE 4210-67-P

[[Page 43155]]

[GRAPHIC] [TIFF OMITTED] TP19JY22.016


[[Page 43156]]


[GRAPHIC] [TIFF OMITTED] TP19JY22.017

    (iii) Wind Zone III. . . . .150 mph. The following areas are 
considered to be within Wind Zone III of the Basic Wind Zone Map:
    (A) States and Territories: The entire State of Hawaii, the coastal 
regions of Alaska (as determined by the 110 mph isotach on the ASCE/SEI 
7 map), and all of the U.S. Territories of American Samoa, Guam, 
Northern Mariana Islands, Puerto Rico, and the United States Virgin 
Islands.
    (B) Local governments: The following local governments listed by 
State (counties, unless specified otherwise):
[GRAPHIC] [TIFF OMITTED] TP19JY22.018


[[Page 43157]]


BILLING CODE 4210-67-C
* * * * *
    (j) * * *
    (1) All welds must be made in accordance with the applicable 
provisions of the Specification for Structural Steel Buildings, AISC 
360 (incorporated by reference, see Sec.  3280.4); the North American 
Specification for the Design of Cold-Formed Steel Structural Members, 
AISI S100 (incorporated by reference, see Sec.  3280.4); and the 
Specification for the Design of Cold-Formed Stainless Steel Structural 
Members, SEI/ASCE 8 (incorporated by reference, see Sec.  3280.4).
* * * * *
    (k) * * *
    (2) For roofs with slopes less than 7:12 that contain an attic area 
or for portions of roofs with slopes 7:12 or greater that do meet the 
ceiling height/living space requirements of the standards, the attic 
floor must be designed for a storage live load of 20 pounds per square 
foot (psf).
    (i) Attic area as used within this section are those spaces where 
the maximum clear height between joist and rafters is 42 inches or 
greater or where there are two or more adjacent trusses with web 
configurations capable of accommodating an assumed rectangle 42 inches 
high by 24 inches in width or greater, within the plane of the trusses.
    (ii) The live load need only be applied to those portions of the 
joist or truss bottom chords where all of the following criteria are 
met:
    (A) The attic area is accessible from an opening not less than 20 
inches in width and 30 inches in length that is located where the clear 
height in the attic is a minimum of 30 inches; and,
    (B) The slope of the joists of the truss bottom chord are no 
greater than 2 inches vertical to 12 inches horizontal; and,
    (C) Required insulation depth is less than the joist or truss 
bottom chord member depth.
0
19. Amend Sec.  3280.307 by adding paragraph (f) to read as follows:


Sec.  3280.307   Resistance to elements and use.

* * * * *
    (f) The exterior wall envelope must be designed and constructed in 
a manner that prevents the accumulation of water within the wall 
assembly by providing a Water Resistive Barrier (WRB) behind the 
exterior cladding and a means of draining water that enters the 
assembly.
0
20. Add Sec.  3280.309 to subpart D to read as follows:


Sec.  3280.309   Standard for vinyl siding and polypropylene siding 
used in manufactured homes.

    (a) Scope. This section establishes the requirements for vinyl 
siding and polypropylene siding used in manufactured homes.
    (b) Standards--(1) Vinyl siding. All vinyl siding must comply with 
the requirements of ASTM D3679 (incorporated by reference, see Sec.  
3280.4) and must be certified or listed and labeled as conforming to 
those requirements.
    (2) Polypropylene siding. All polypropylene siding must comply with 
the requirements of ASTM D7254 (incorporated by reference, see Sec.  
3280.4) and must be certified or listed and labeled as conforming to 
those requirements.
    (c) Installation. Vinyl siding and soffit installation must be 
installed in accordance with the manufacturer's installation 
instructions. Vinyl siding and soffit installation must be based on 
ASTM D4756 (incorporated by reference, see Sec.  3280.4).
0
21. Amend Sec.  3280.403 as follows:
0
a. Revise paragraph (b)(1) and the first sentence of the introductory 
text of paragraph (b)(2);
0
b. Revise the introductory text of paragraph (d)(1); and
0
c. Revise paragraph (e).
    The revisions read as follows:


Sec.  3280.403   Requirements for windows, sliding glass doors, and 
skylights.

* * * * *
    (b)(1) Standard. All primary windows and sliding glass doors must 
comply with AAMA 1701.2 (incorporated by reference, see Sec.  3280.4), 
or AAMA/WDMA/CSA 101/I.S.2/A440 (incorporated by reference, see Sec.  
3280.4), except the exterior and interior pressure tests must be 
conducted at the minimum design wind loads required for components in 
Sec.  3280.305(c)(1).
    (2) All skylights must comply with AAMA/WDMA/CSA 101/I.S.2/A440 
(incorporated by reference, see Sec.  3280.4). * * *
* * * * *
    (d) * * * (1) Safety glazing materials, where used shall meet ANSI 
Z97.1 (incorporated by reference, see Sec.  3280.4).
* * * * *
    (e) Certification. All primary windows and sliding glass doors to 
be installed in manufactured homes must be certified as complying with 
AAMA 1701.2 (incorporated by reference, see Sec.  3280.4) or AAMA/WDMA/
CSA 101/I.S.2/A440 (incorporated by reference, see Sec.  3280.4). This 
certification must be based on tests conducted at the design wind loads 
specified in Sec.  3280.305(c)(1).
    (1) All such windows and doors must show evidence of certification 
by affixing a quality certification label to the product from an 
independent product certification body accredited to ISO/IEC 17065 
(incorporated by reference, see Sec.  3280.4).
    (2) In determining certifiability of the products, an independent 
quality assurance agency must conduct pre-production specimen tests in 
accordance with AAMA 1702.2 (incorporated by reference see Sec.  
3280.4) or AAMA/WDMA/CSA 101/I.S.2/A440 (incorporated by reference, see 
Sec.  3280.4). Further, such agency must inspect the product 
manufacturer's facility at least twice per year.
    (3) All skylights installed in manufactured homes must be certified 
as complying with AAMA 1701.2 (incorporated by reference see Sec.  
3280.4) or AAMA/WDMA/CSA 101/I.S.2/A440 (incorporated by reference, see 
3280.4).
* * * * *
0
22. Amend Sec.  3280.404 by revising paragraphs (b) and (e) to read as 
follows:


Sec.  3280.404   Standard for egress windows and devices for use in 
manufactured homes.

* * * * *
    (b) Performance. Egress windows including auxiliary frame and 
seals, if any, must meet all requirements of AAMA 1701.2 (incorporated 
by reference, see Sec.  3280.4) and AAMA 1704 (incorporated by 
reference, see Sec.  3280.4) or AAMA/WDMA/CSA 101/I.S.2/A440 
(incorporated by reference, see Sec.  3280.4).
    (1) Loading. Exterior and interior pressure tests for components 
and cladding must be conducted meeting or exceeding the minimum design 
wind loads required by Sec.  3280.305(c)(1).
    (2) Dimensions. All egress systems must have a minimum clear 
horizontal dimension of 20 inches and a minimum clear vertical 
dimension of 24 inches and have a clear opening of at least 5 ft\2\.
* * * * *
    (e) Certification of Egress Windows and devices. (1) Egress windows 
and devices must be listed in accordance with the procedures and 
requirements of AAMA 1701.2 (incorporated by reference, see Sec.  
3280.4) and AAMA 1704 (incorporated by reference, see Sec.  3280.4) or 
AAMA/WDMA/CSA 101/I.S.2/A440 (incorporated by reference, see Sec.  
3280.4). This certification must be based on tests conducted meeting or 
exceeding the minimum design wind loads specified in Sec.  
3280.305(c)(1).
    (2) All such windows and devices must show evidence of 
certification by

[[Page 43158]]

affixing a quality certification label to the product from an 
independent product certification body accredited to ISO/IEC 17065 
(incorporated by reference, see Sec.  3280.4).
* * * * *
0
23. Amend Sec.  3280.405 by revising paragraphs (b), (c), and (e) to 
read as follows:


Sec.  3280.405   Standard for swinging exterior passage doors for use 
in manufactured homes.

* * * * *
    (b) Performance requirements. The design and construction of 
exterior door units must meet all requirements of AAMA 1702.2 
(incorporated by reference, see Sec.  3280.4) or AAMA/WDMA/CSA 101/
I.S.2/A440 (incorporated by reference, see Sec.  3280.4).
    (c) Materials and methods. Any material or method of construction 
must conform to the performance requirements as outlined in paragraph 
(b) of this section. Plywood must be exterior type and preservative 
treated in accordance with WDMA I.S. 4 (incorporated by reference, see 
Sec.  3280.4).
* * * * *
    (e) Certification. All swinging exterior doors to be installed in 
manufactured homes must be certified as complying with AAMA 1702 
(incorporated by reference, see Sec.  3280.4) or AAMA/WDMA/CSA 101/
I.S.2/A440 (incorporated by reference, see Sec.  3280.4).
    (1) All such doors must show evidence of certification by affixing 
a quality certification label to the product from an independent 
product certification body accredited to ISO/IEC 17065 (incorporated by 
reference, see Sec.  3280.4).
    (2) In determining certifiability of the products, an independent 
quality assurance agency must conduct a pre-production specimen test in 
accordance with AAMA 1702.2 (incorporated by reference, see Sec.  
3280.4) or AAMA/WDMA/CSA 101/I.S.2/A440 (incorporated by reference, see 
Sec.  3280.4).
* * * * *
0
24. Amend Sec.  3280.504 by revising paragraphs (a)(1) and (c) to read 
as follows:


Sec.  3280.504   Condensation control and installation of vapor 
retarders.

    (a) * * * (1) In Uo Value Zones 2 and 3, ceilings must 
have a vapor retarder with a permeance of not greater than 1 perm as 
measured by ASTM E96/E96M (incorporated by reference, see Sec.  
3280.4), installed on the living space side of the roof cavity.
* * * * *
    (c) Liquid applied vapor retarders. Each liquid applied vapor 
retarder must be tested by a nationally recognized testing agency for 
use on the specific substrate to which it is applied. The test report 
must include the perm rating, as measured by ASTM E96/E96M 
(incorporated by reference, see Sec.  3280.4), and associated 
application rate for each specific substrate.
* * * * *
0
25. Amend Sec.  3280.510 by revising the first sentence of the 
introductory text to read as follows:


Sec.  3280.510   Heat loss certificate.

    The manufactured home manufacturer must permanently affix the 
following ``Certificate'' to an interior surface of each dwelling unit 
that is readily visible to the occupant. * * *
* * * * *
0
26. Amend Sec.  3280.511 by revising the first sentence of the 
introductory text of paragraph (a) and paragraph (b) to read as 
follows:


Sec.  3280.511   Comfort cooling certificate and information.

    (a) The manufactured home manufacturer must permanently affix a 
``Comfort Cooling Certificate'' to an interior surface of each dwelling 
unit that is readily visible to the occupant. * * *
* * * * *
    (b) For each home designated as suitable for central air 
conditioning the manufacturer shall provide the maximum central 
manufactured home air conditioning capacity certified in accordance 
with the ANSI/AHRI Standard 210/240 with Addenda 1 and 2 (incorporated 
by reference, see Sec.  3280.4) and in accordance with Sec.  
3280.715(a)(3). If the capacity information provided is based on 
entrances to the air supply duct at other than the furnace plenum, the 
manufacturer shall indicate the correct supply air entrance and return 
air exit locations.
* * * * *
0
27. Amend Sec.  3280.603 by revising paragraph (b)(4)(ii) to read as 
follows:


Sec.  3280.603   General requirements.

* * * * *
    (b) * * *
    (4) * * *
    (ii) A statement in the installation instructions required by Sec.  
3280.306(b), stating that if the heat tape or pipe heating cable is 
used, it must be listed or certified for its intended purpose.
* * * * *
0
28. Revise and republish Sec.  3280.604 to read as follows


Sec.  3280.604   Materials.

    (a) Minimum standards. Materials, devices, fixtures, fittings, 
equipment, appliances, appurtenances and accessories shall conform to 
one of the standards listed in this section (all incorporated by 
reference, see Sec.  3280.4) and be free from defects. Where an 
appropriate standard is not listed in this section or a standard not 
listed is preferred, the item may be used if it is listed. A listing is 
also required when so specified in other sections of this subpart.
    (b) Where more than one standard is referenced for a particular 
material or component, compliance with only one of those standards is 
acceptable. Exceptions:
    (1) When one of the reference standards requires evaluation of 
chemical, toxicity or odor properties which are not included in the 
other standard, then conformance to the applicable requirements of each 
standard shall be demonstrated;
    (2) When a plastic material or component is not covered by the 
standards in this section, it must be certified as non-toxic in 
accordance with ANSI/NSF 61, Drinking water system components--Health 
effects (incorporated by reference, see Sec.  3280.4).
    (c) Standards for some of the generally used materials and methods 
of construction are listed as following:
    (1) Ferrous Pipe and Fittings. (i) Gray Iron Threaded Fittings--
ANSI/ASME B16.4.
    (ii) Malleable Iron Threaded Fittings--ANSI/ASME B16.3.
    (iii) Material and Property Standard for Special Cast Iron 
Fittings--IAPMO PS 5.
    (iv) Welding and Seamless Wrought Steel Pipe--ANSI/ASME B36.10.
    (v) Standard Specification for Pipe, Steel, Black and Hot-Dipped, 
Zinc-Coated, Welded and Seamless--ASTM A53/A53M.
    (vi) Pipe Threads, General Purpose (Inch)--ANSI/ASME B1.20.1.
    (vii) Standard Specification for Cast Iron Soil Pipe and Fittings--
ASTM A74.
    (viii) Standard Specification for Hubless Cast Iron Soil Pipe and 
Fittings for Sanitary and Storm Drain, Waste, and Vent Piping 
Applications--CISPI-301.
    (2) Nonferrous Pipe and Fittings. (i) Standard Specification for 
Seamless Copper Pipe, Standard Sizes--ASTM B42.
    (ii) Standard Specification for General Requirements for Wrought 
Seamless

[[Page 43159]]

Copper and Copper-Alloy Tube--ASTM B251.
    (iii) Standard Specification for Seamless Copper Water Tube--ASTM 
B88.
    (iv) Standard Specification for Copper Drainage Tube (DWV)--ASTM 
B306.
    (v) Wrought Copper and Copper Alloy Solder-Joint Pressure Fitting--
ASME/ANSI B16.22.
    (vi) Wrought Copper and Wrought Copper Alloy Solder-Joint Drainage 
Fittings-DWV--ASME/ANSI B16.29.
    (vii) Cast Copper Alloy Solder-Joint Pressure Fittings--ANSI 
B16.18.
    (viii) Cast Copper Alloy Solder-Joint Drainage Fittings-DWV--ASME 
B16.23.
    (ix) Cast Copper Alloy Fittings for Flared Copper Tubes--ASME/ANSI 
B16.26.
    (x) Standard Specification for Seamless Red Brass Pipe, Standard 
Sizes--ASTM B43.
    (xi) Cast Bronze Threaded Fittings, Classes 125 and 250--ANSI/ASME 
B16.15.
    (3) Plastic Pipe and Fittings. (i) Standard Specification 
Acrylonitrile-Butadiene-Styrene (ABS) Schedule 40 Plastic Drain, Waste, 
and Vent Pipe and Fittings--ASTM D2661.
    (ii) Standard Specification for Poly (Vinyl Chloride) (PVC) Plastic 
Drain, Waste, and Vent Pipe and Fittings--ASTM D2665.
    (iii) Standard Specification for Drain, Waste, and Vent (DWV) 
Plastic Fittings Patterns--ASTM D3311.
    (iv) Standard Specification for Acrylonitrile-Butadiene-Styrene 
(ABS) Schedule 40, Plastic Drain, Waste, and Vent Pipe with a Cellular 
Core--ASTM F628.
    (v) Standard Specification for Chlorinated Poly (Vinyl Chloride) 
(CPVC) Plastic Hot- and Cold-Water Distribution Systems--ASTM D2846.
    (vi) Standard Specification for Polybutylene (PB) Plastic Hot- and 
Cold-Water Distribution Systems--ASTM D3309.
    (vii) Plastic Piping Components and Related Materials--ANSI/NSF 14.
    (viii) Standard Specification for Crosslinked Polyethylene (PEX) 
Tubing--ASTM F876.
    (ix) Standard Specification for Crosslinked Polyethylene (PEX) 
Plastic Hot- and Cold-Water Distribution Systems--ASTM F877.
    (4) Miscellaneous. (i) Standard Specification for Rubber Gaskets 
for Cast Iron Soil Pipe and Fittings, ASTM C564.
    (ii) Backflow Valves--ANSI A112.14.1.
    (iii) Plumbing Fixture Setting Compound--TTP 1536A.
    (iv) Material and Property Standard for Cast Brass and Tubing P-
Traps--IAPMO PS 2.
    (v) Relief Valves for Hot Water Supply Systems, ANSI Z21.22.
    (vi) Standard Specification for Solvent Cement for Acrylonitrile-
Butadiene-Styrene (ABS) Plastic Pipe and Fittings--ASTM D2235.
    (vii) Standard Specification for Solvent Cements for Poly (Vinyl 
Chloride) (PVC) Plastic Piping Systems--ASTM D2564.
    (viii) Specification for Neoprene Rubber Gaskets for HUB and Spigot 
Cast Iron Soil Pipe and Fittings--CISPI-HSN.
    (ix) Plumbing System Components for Manufactured Homes and 
Recreational Vehicles--ANSI/NSF 24.
    (x) Material and Property Standard for Diversion Tees and Twin 
Waste Elbow--IAPMO PS 9.
    (xi) Material and Property Standard for Flexible Metallic Water 
Connectors--IAPMO PS 14.
    (xii) Material and Property Standard for Dishwasher Drain Airgaps--
IAPMO PS 23.
    (xiii) Material and Property Standards for Backflow Prevention 
Assemblies--IAPMO PS 31.
    (xiv) Performance Requirements for Air Admittance Valves for 
Plumbing Drainage Systems, Fixture and Branch Devices--ASSE Standard 
#1051.
    (xv) Drinking Water System Components-Health Effects--ANSI/NSF 61.
    (5) Plumbing Fixtures. (i) Plumbing Fixtures (General 
Specifications)--FS WW-P-541E/GEN.
    (ii) Vitreous China Plumbing Fixtures--ANSI/ASME A112.19.2(M).
    (iii) Enameled Cast Iron Plumbing Fixtures--ANSI/ASME A112.19.1M.
    (iv) Porcelain Enameled Formed Steel Plumbing Fixtures--ANSI/ASME 
A112.19.4(M).
    (v) Plastic Bathtub Units with Addenda Z124.1a and Z124.16--ANSI 
Z124.1.
    (vi) Standard for Porcelain Enameled Formed Steel Plumbing 
Fixtures--IAPMO TSC 22.
    (vii) Plastic Shower Receptors and Shower Stalls with Addendum 
Z124.2a--ANSI Z124.2.
    (viii) Stainless Steel Plumbing Fixtures (Designed for Residential 
Use)--ANSI/ASME A112.19.3M.
    (ix) Material and Property Standard for Drains for Prefabricated 
and Precast Showers--IAPMO PS 4.
    (x) Plastic Lavatories with Addendum Z124.3a--ANSI Z124.3.
    (xi) Standard for Safety Glazing Materials used in Buildings--
Safety Performance Specifications and Methods of Test, ANSI Z97.1.
    (xii) Water Heater Relief Valve Drain Tubes--ASME A112.4.1.
    (xiii) Flexible Water Connectors--ASME A112.18.6.
    (xiv) Performance Requirements for Backflow Protection Devices and 
Systems in Plumbing Fixture Fittings--ASME A112.18.3M.
    (xv) Non-Vitreous Ceramic Plumbing Fixtures--ASME A112.19.9M.
    (xvi) Dual Flush Devices for Water Closets--ASME A119.19.10.
    (xvii) Deck Mounted Bath/Shower Transfer Valves with Integral 
Backflow Protection--ASME A112.18.7.
    (xviii) Plastic Fittings for Connecting Water Closets to the 
Sanitary Drainage System--ASME A112.4.3.
    (xix) Hydraulic Performance Requirements for Water Closets and 
Urinals, ASME A112.19.6.
    (xx) Plumbing Fixture Fittings--ASME/ANSI A112.18.1M.
    (xxi) Trim for Water Closet, Bowls, Tanks, and Urinals--ANSI 
A112.19.5.
    (xxii) Plastic Water Closets, Bowls, and Tanks with Addenda 
Z124.4a--ANSI Z124.4.
    (xxiii) Plastic Toilet (Water Closets) Seats--ANSI Z124.5.
    (xxiv) Prefabricated Plastic Spa Shells--ANSI Z124.7.
    (xxv) Whirlpool Bathtub Appliances--ASME/ANSI A112.19.7M.
    (xxvi) Plastic Urinal Fixtures--ANSI Z-124.9.
    (xxvii) Performance Requirements for Individual Thermostatic 
Pressure Balancing and Combination Control for Bathing Facilities--ASSE 
1016.
    (xxviii) Performance Requirements for Pressurized Flushing Devices 
(Flushometers) for Plumbing Fixtures--ASSE 1037.
    (xxix) Performance Requirements for Water Closet Flush Tank Fill 
Valves (Ballcocks)--ASSE 1002.
    (xxx) Performance Requirements for Hand-held Showers--ASSE 1014.
    (xxxi) Hydrants for Utility and Maintenance Use--ANSI/ASME 
A112.21.3M.
    (xxxii) Performance Requirements for Home Laundry Equipment--ASSE 
1007.
    (xxxiii) Performance Requirements for Hot Water Dispensers, 
Household Storage Type Electrical--ASSE 1023.
    (xxxiv) Plumbing Requirements for Residential Use (Household) 
Dishwashers--ASSE 1006.
    (xxxv) Performance Requirements for Household Food Waste Disposer 
Units--ASSE 1008.
    (xxxvi) Performance Requirements for Temperature Activated Mixing 
Valves for Primary Domestic Use--ASSE 1017.
    (xxxv) Water Hammer Arresters--ANSI A112.26.1.
    (xxxvi) Suction Fittings for Use in Swimming Pools, Wading Pools, 
Spas,

[[Page 43160]]

Hot Tubs, and Whirlpool Bathtub Appliances--ASME/ANSI A112.19.8M.
    (xxxvii) Air Gaps in Plumbing Systems--ASME A112.1.2.
    (xxxviii) Performance Requirements for Diverters for Plumbing 
Faucets with Hose Spray, Anti-Siphon Type, Residential Applications--
ASSE 1025.
    (xxxix) Performance Requirements for Pipe Applied Atmospheric Type 
Vacuum Breakers--ASSE 1001.
    (xl) Performance Requirements for Hose Connection Vacuum Breakers--
ASSE 1011-1981.
    (xli) Performance Requirements for Wall Hydrants, Frost Proof 
Automatic Draining, Anti-Backflow Types--ANSI/ASSE 1019.
    (xlii) Performance Requirements for Automatic Compensating Values 
for Individual Shower and Tub/Shower Combinations--ASSE 1016.
    (xliii) Performance Requirements for Water Temperature Limiting 
Devices--ASSE 1070-2004.
0
29. Amend Sec.  3280.607 by revising paragraphs (b)(3) and (c)(6)(iv) 
to read as follows:


Sec.  3280.607   Plumbing Fixtures.

* * * * *
    (b) * * *
    (3) Shower compartment. (i) Each compartment stall must be provided 
with an approved watertight receptor with sides and back extending with 
sides and back extending at least 1 inch above the finished dam or 
threshold. Except as provided by paragraph (b)(3)(v) of this section, 
the depth of a shower receptor must not be less than 2 inches or more 
than 9 inches measured from the top of the finished dam or threshold to 
the top of the drain. The wall area must be constructed of smooth, non-
corrosive, and non-absorbent materials to a height not less than 6 feet 
above the bathroom floor level. Such walls must form a watertight joint 
with each other and with the bathtub, receptor or shower floor. The 
floor or compartment must slope uniformly to the drain not less than 
one-fourth nor more than \1/2\ inch per foot.
    (ii) The joint around the drain connection shall be made watertight 
by a flange, clamping ring, or other approved listed means.
    (iii) Shower doors and tub and shower enclosures must be 
constructed so as to be waterproof and, if glazed, glazing must comply 
with ANSI Z97.1 (incorporated by reference, see Sec.  3280.4)
    (iv) Prefabricated plumbing fixtures shall be approved or listed.
    (v) Thresholds in roll-in-type shower compartments must be \1/2\ 
inch maximum in height in accordance with paragraph (vi) of this 
section. In transfer type shower compartments, thresholds \1/2\ inch 
maximum in height must be beveled, rounded, or be vertical.
    (vi) Changes in level of \1/4\ inch maximum in height must be 
permitted to be vertical. Changes in level greater than \1/4\ inch in 
height and not more than \1/2\ inch maximum in height must be beveled 
with a slope not steeper than 1:2.
    (vii) Shower and tub-shower combination valves must be balanced 
pressure, thermostatic, or combination mixing valves that conform to 
the requirements of ASSE 1016 (incorporated by reference, see Sec.  
3280.4). Such valves must be equipped with handle position stops that 
are adjustable in accordance with the valve manufacturer's instructions 
and to a maximum setting of 120 [deg]F. Hot water supplied to bathtubs 
and whirlpool bathtubs are to be limited to a temperature of not 
greater than 120 [deg]F by a water temperature limiting device that 
conforms to the requirements of ASSE 1070 (incorporated by reference, 
see Sec.  3280.4).
* * * * *
    (c) * * *
    (6) * * *
    (iv) Electrical. Wiring must comply with Articles 680.70, 680.71, 
and 680.72 of NFPA 70 (incorporated by reference, see Sec.  3280.4).
0
30. Amend Sec.  3280.609 by revising paragraph (a)(2) to read as 
follows:


Sec.  3280.609   Water distribution systems.

    (a) * * *
    (2) Hot water supply. Each dwelling unit equipped with a kitchen 
sink, and bathtub and/or shower must be provided with a hot water 
supply system including a listed water heater.
* * * * *
0
31. Amend Sec.  3280.611 by revising paragraph (c)(5) to read as 
follows:


Sec.  3280.611   Vents and venting.

* * * * *
    (c) * * *
    (5) The distance of the fixture trap from the vent must not exceed 
the values given in the following table:
[GRAPHIC] [TIFF OMITTED] TP19JY22.019

* * * * *
0
32. Amend Sec.  3280.702 by revising the definitions for ``Class 0 air 
ducts and air connectors'' and ``Class 1 air ducts and air 
connectors,'' to read as follows:


Sec.  3280.702   Definitions.

* * * * *
    Class 0 air ducts and air connectors means air ducts and air 
connectors having a fire hazard classification of zero when tested in 
accordance with UL 181 (incorporated by reference, see Sec.  3280.4).
    Class 1 air ducts and air connectors means air ducts and air 
connectors having a flame spread rating of not over 25 without evidence 
of continued

[[Page 43161]]

progressive combustion and a smoke developed rating of not over 50 when 
tested in accordance with UL 181 (incorporated by reference, see Sec.  
3280.4).
* * * * *
0
33. Revise Sec.  3280.703 to read as follows:


Sec.  3280.703   Minimum standards.

    Heating, cooling, and fuel burning appliances and systems in 
manufactured homes shall be free of defects and shall conform to 
applicable standards (incorporated by reference, see Sec.  3280.4) in 
this section unless otherwise specified in this part. When more than 
one standard is referenced, compliance with any one such standard shall 
meet the requirements of this part.
    (a) Appliances. (1) Heating and Cooling Equipment--UL 1995.
    (2) Liquid Fuel Burning Heating Appliances for Manufactured Homes & 
Recreational Vehicles--UL 307A.
    (3) Fixed and Location-Dedicated Electric Room Heaters--UL 2021.
    (4) Electric Baseboard Heating Equipment--UL 1042.
    (5) Electric Central Air Heating Equipment--UL 1096.
    (6) Gas Burning Heating Appliances for Manufactured Homes & 
Recreational Vehicles--UL 307B.
    (7) Gas Clothes Dryers Volume 1, Type 1 Clothes Dryers--ANSI 
Z21.5.1.
    (8) Gas-fired Water Heaters, Volume 3, Storage Water Heaters with 
Input Ratings Above 75,000 BTU per Hour, Circulating and 
Instantaneous--ANSI Z21.10.3.
    (9) Gas Fired, Heat Activated Air Conditioning and Heat Pump 
Appliances--ANSI Z21.40.1.
    (10) Gas Fired Central Furnaces (Except Direct Vent Systems)--ANSI 
Z21.47.
    (11) Connectors for Outdoor Gas Appliances and Manufactured Homes--
ANSI Z21.75
    (12) Decorative Gas Appliances for Installation in Solid Fuel 
Burning Fireplaces--RADCO DS-010.
    (13) Household Cooking Gas Appliances--ANSI Z21.1.
    (14) Refrigerators Using Gas Fuel--ANSI Z21.19.
    (15) Gas Water Heaters, Volume 1, Storage Water Heaters with Input 
Ratings of 75,000 BTU per hour or Less--ANSI Z21.10.1.
    (16) Household Electric Storage Tank Water Heaters--UL 174.
    (17) Standard for Household and Similar Electrical Appliances--
Safety, Part 2-34: Particular Requirements for Motor-Compressors--UL 
60335-2-34.
    (18) Smoke Detectors for Fire Protective Signaling Systems--UL 268.
    (19) Standard for Single and Multiple Station Carbon Monoxide 
Alarms--UL 2034.
    (20) Standard for Electric Heating Appliances--UL 499.
    (b) Ferrous Pipe and Fittings. (1) Standard Specification for Pipe, 
Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless--ASTM 
A53/A53M.
    (2) Standard Specification for Electric-Resistance-Welded Coiled 
Steel Tubing for Gas and Fuel Oil Lines--ASTM A539.
    (3) Pipe Threads, General Purpose (Inch)--ANSI/ASME B1.20.1.
    (4) Welding and Seamless Wrought Steel Pipe--ANSI/ASME B36.10.
    (c) Nonferrous Pipe, Tubing, and Fittings. (1) Standard 
Specification for Seamless Copper Water Tube--ASTM B88.
    (2) Standard Specification for Seamless Copper Tube for Air 
Conditioning and Refrigeration Field Service--ASTM B280.
    (3) Connectors for Gas Appliances--ANSI Z21.24.
    (4) Manually Operated Gas Valves for Appliances, Appliance 
Connector Valves and Hose End Valves--ANSI Z21.15.
    (5) Standard for Gas Supply Connectors for Manufactured Homes--
IAPMO TSC 9.
    (6) Standard Specification for General Requirements for Wrought 
Seamless Copper and Copper-Alloy Tube--ASTM B251.
    (7) Standard Specification for Seamless Copper Pipe, Standard 
Sizes--ASTM B42.
    (d) Miscellaneous. (1) Factory-Made Air Ducts & Air Connectors--UL 
181.
    (2) Closure Systems for use with Rigid Air Ducts and Air 
Connectors--UL 181A.
    (3) Standard for Safety Closure Systems for use with Flexible Air 
Ducts and Air Connectors--UL 181B.
    (4) Standard for Safety Glazing Materials used in Buildings--Safety 
Performance Specifications and Methods of Test--ANSI Z97.1.
    (5) Tube Fittings for Flammable and Combustible Fluids, 
Refrigeration Service, and Marine Use--UL 109.
    (6) Pigtails & Flexible Hose Connectors for LP-Gas--UL 569.
    (7) Roof Jacks for Manufactured Homes and Recreational Vehicles, 
Eighth Edition--UL 311.
    (8) Relief Valves for Hot Water Supply Systems--ANSI Z21.22.
    (9) Automatic Gas Ignition Systems and Components--ANSI Z21.20.
    (10) Automatic Valves for Gas Appliances--ANSI Z21.21.
    (11) Gas Appliance Thermostats--ANSI Z21.23 with ANSI Z21.23a 
(Addenda 1) and ANSI 21.23b (Addenda 2).
    (12) Gas Vents--UL 441.
    (13) Installation of Oil-Burning Equipment--NFPA 31.
    (14) National Fuel Gas Code--NFPA 54/ANSI Z223.1.
    (15) Warm Air Heating and Air Conditioning Systems--NFPA 90B.
    (16) Standard for the Storage and Handling of Liquefied Petroleum 
Gas--NFPA 58.
    (17) Flares for Tubing--SAE J533b.
    (18) Chimneys, Factory Built Type & Building Heating Appliance--UL 
103.
    (19) Factory-Built Fireplaces--UL 127.
    (20) Solid-Fuel Type Room Heaters-- UL 1482.
    (21) Fireplace Stoves--UL 737.
    (22) Unitary Air-Conditioning and Air-Source Heat Pump Equipment--
ANSI/AHRI Standard 210/240 with Addenda 1 and 2.
    (23) Ventilation and Acceptable Indoor Air Quality in Low-Rise 
Residential Buildings--ANSI/ASHRAE 62.2.
    (24) Requirements for Gas Connectors for Connection of Fixed 
Appliances for Outdoor Installation, Park Trailers, and Manufactured 
(Mobile) Homes to the Gas Supply--AGA No. 3.
0
34. Amend Sec.  3280.705 as follows:
0
a. Revise paragraphs (b)(1), (3), and (5);
0
b. Revise paragraph (c)(2);
0
c. Revise paragraphs (e) and (f);
0
d. Revise the first sentence of paragraph (j); and,
0
e. Revise paragraphs (l)(1), (2)(ii), and (3);
    The revisions read as follows:


Sec.  3280.705   Gas piping systems.

* * * * *
    (b) * * *
    (1) Steel or wrought-iron pipe shall comply with ASME B36.10 
(incorporated by reference, see Sec.  3280.4). Threaded brass pipe in 
iron pipe sizes may be used. Threaded brass pipe shall comply with ASTM 
B43. (incorporated by reference, see Sec.  3280.4).
* * * * *
    (3) Copper tubing must be annealed type, Grade K or L, conforming 
to ASTM B88 (incorporated by reference, see Sec.  3280.4), or must 
comply with the ASTM B280 (incorporated by reference, see Sec.  
3280.4). Copper tubing must be internally tinned.
* * * * *
    (5) Corrugated stainless steel tubing (CSST) systems must be listed 
and installed in accordance with ANSI LC 1 (incorporated by reference, 
see

[[Page 43162]]

Sec.  3280.4), and the requirements of this section.
    (c) * * *
    (2) The connection(s) between units must be made with a 
connector(s) listed for exterior use or direct plumbing sized in 
accordance with paragraph (d) of this section. A shutoff valve of the 
non-displaceable rotor type conforming to ANSI Z21.15 (incorporated by 
reference, see Sec.  3280.4), suitable for outdoor use must be 
installed at each crossover point upstream of the connection.
* * * * *
    (e) Joints for gas pipe. All pipe joints in the piping system, 
unless welded or brazed, shall be threaded joints that comply with 
ANSI/ASME B1.20.1 (incorporated by reference, see Sec.  3280.4). Right 
and left nipples or couplings shall not be used. Unions, if used, shall 
be of ground joint type. The material used for welding or brazing pipe 
connections shall have a melting temperature in excess of 1,000 \0\F.
    (f) Joints for tubing. (1) Tubing joints shall be made with either 
a single or a double flare of 45 degrees in accordance with SAE J533b 
(incorporated by reference, see Sec.  3280.4) or with other listed 
vibration-resistant fittings, or joints may be brazed with material 
having a melting point exceeding 1,000 [deg]F. Metallic ball sleeve 
compression-type tubing fittings shall not be used.
    (2) Steel tubing joints shall be made with a double-flare in 
accordance with SAE J533b (incorporated by reference, see Sec.  
3280.4).
* * * * *
    (j) * * * When gas appliances are installed, at least one gas 
supply connection must be provided on each dwelling unit. * * *
* * * * *
    (l) * * *(1) General. A listed LP-Gas flexible connection 
conforming to UL 569 (incorporated by reference, see Sec.  3280.4), or 
equal, must be supplied when LP-Gas cylinder(s) and regulator(s) are 
supplied.
    (2) * * *
    (ii) The outlet must be provided with an approved quick-disconnect 
device, which must be designed to provide a positive seal on the supply 
side of the gas system when the appliance is disconnected. A shutoff 
valve of the non-displaceable rotor type conforming to ANSI Z21.15 
(incorporated by reference, see Sec.  3280.4), must be installed 
immediately upstream of the quick-disconnect device. The complete 
device must be provided as part of the original installation.
* * * * *
    (3) Valves. A shutoff valve must be installed in the fuel piping at 
each appliance inside the manufactured home structure, upstream of the 
union or connector in addition to any valve on the appliance and so 
arranged to be accessible to permit servicing of the appliance and 
removal of its components. The shutoff valve must be located within 6 
feet of any cooking appliance and within 3 feet of any other appliance. 
A shutoff valve may serve more than one appliance if located as 
required by this paragraph (l)(3). The shutoff valve must be of the 
non-displaceable rotor type and conform to ANSI Z21.15 (incorporated by 
reference, see Sec.  3280.4).
* * * * *
0
35. Amend Sec.  3280.706 by revising paragraphs (b)(3) and (d) to read 
as follows:


Sec.  3280.706   Oil piping systems.

* * * * *
    (b) * * *
    (3) Copper tubing must be annealed type, Grade K or L conforming to 
ASTM B88 (incorporated by reference, see Sec.  3280.4), or shall comply 
with ASTM B280 (incorporated by reference, see Sec.  3280.4).
* * * * *
    (d) Joints for oil piping. All pipe joints in the piping system, 
unless welded or brazed, shall be threaded joints which comply with 
ANSI/ASME B1.20.1 (incorporated by reference, see Sec.  3280.4). The 
material used for brazing pipe connections shall have a melting 
temperature in excess of 1,000 F.
* * * * *
0
36. Amend Sec.  3280.707 as follows:
0
a. Revise the introductory text of paragraph (a);
0
b. Revise the introductory text of paragraph (d)(2) and designate the 
table immediately following paragraph (d)(2) as table 1 to paragraph 
(d)(2); and
0
c. Revise the introductory text of paragraph (f);
    The revisions read as follows:


Sec.  3280.707   Heat producing appliances.

    (a) Heat producing appliances and vents, roof jacks and chimneys 
necessary for their installation in manufactured homes must be listed 
or certified for residential use by a nationally recognized testing 
agency.
* * * * *
    (d) * * *
    (2) All gas and oil-fired automatic storage water heaters shall 
have a recovery efficiency, E, and a standby loss, S, as described 
below. The method of test of E and S shall be as described in section 
2.7 of Gas Water heaters, Vol. I, Storage Water Heaters with Input/
Ratings of 75,000 BTU per hour or less, ANSI Z21.10.1 (incorporated by 
reference, see Sec.  3280.4), except that for oil-fired units. CF = 
1.0, Q = total gallons of oil consumed and H = total heating value of 
oil in BTU/gallon.
* * * * *
    (f) Oil-fired heating equipment. All oil-fired heating equipment 
must conform to UL 307A (incorporated by reference, see Sec.  3280.4) 
and be installed in accordance with NFPA 31 (incorporated by reference, 
see Sec.  3280.4). Regardless of the requirements of the above-
referenced standards, or any other standards referenced in this part, 
the following are not required:
* * * * *
0
37. Amend Sec.  3280.709 by revising the introductory text of paragraph 
(a) and the introductory text of paragraph (g) to read as follows:


Sec.  3280.709   Installation of Appliances.

    (a) The installation of each appliance must conform to the terms of 
its listing and the manufacturer's instructions. Every appliance must 
be secured in place to avoid displacement. For the purpose of servicing 
and replacement, each appliance must be both accessible and removable.
* * * * *
    (g) Solid fuel burning fireplaces and fireplace stoves listed for 
residential use may be installed in manufactured homes provided they 
and their installation conform to the following paragraphs. A fireplace 
or fireplace stove is not to be considered as a heating facility for 
determining compliance with subpart F of this part.
* * * * *
0
38. Revise Sec.  3280.711 to read as follows:


Sec.  3280.711   Instructions.

    Operating instructions must be provided with each appliance unless 
the appliance is affixed with a permanent Quick Response (QR) Code. The 
operating instructions for each appliance must be provided with the 
homeowner's manual.
0
39. Amend Sec.  3280.714 by revising paragraphs (a)(1) and (2) to read 
as follows:


Sec.  3280.714   Appliances, cooling.

    (a) * * *
    (1) Mechanical air conditioners shall be rated in accordance with 
the ANSI/AHRI Standard 210/240 with Addenda 1 and 2 (incorporated by 
reference, see Sec.  3280.4) and certified by AHRI or other nationally 
recognized testing agency capable of providing follow-up service.

[[Page 43163]]

    (i) Electric motor-driven unitary air-cooled air conditioners and 
heat pumps in the cooling mode with rated capacity less than 65,000 
BTU/hour (19,045 watts), when rated at AHRI standard rating conditions 
in ANSI/AHRI Standard 210/240 with Addenda 1 and 2 (incorporated by 
reference, see Sec.  3280.4), must have seasonal energy efficiency 
(SEER) values not less than as specified in 10 CFR part 430, Energy 
Conservation Program for Consumer Products: Central Air Conditioners 
and Heat Pumps Energy Conservation Standards.
    (ii) Heat pumps must be certified to comply with all requirements 
of the ANSI/AHRI Standard 210/240 with Addenda 1 and 2 (incorporated by 
reference, see Sec.  3280.4). Electric motor-driven vapor compression 
heat pumps with supplemental electrical resistance heat must be sized 
to provide by compression at least 60 percent of the calculated annual 
heating requirements for the manufactured home being served. A control 
must be provided and set to prevent operation of supplemental 
electrical resistance heat at outdoor temperatures above 40 [deg]F (4 
[deg]C), except for defrost conditions. Electric motor-driven vapor 
compression heat pumps with supplemental electric resistance heat 
conforming to ANSI/AHRI Standard 210/240 with Addenda 1 and 2 
(incorporated by reference, see Sec.  3280.4), must have Heating Season 
Performance Factor (HSPF) efficiencies not less than as specified in 
the 10 CFR part 430, Energy Conservation Program for Consumer Products: 
Central Air Conditioners and Heat Pumps Energy Conservation Standards.
    (iii) Electric motor-driven vapor compression heat pumps with 
supplemental electric resistance heat conforming to ANSI/AHRI Standard 
210/240 with Addenda 1 and 2 (incorporated by reference, see Sec.  
3280.4), shall show coefficient of performance ratios not less than 
shown below:
[GRAPHIC] [TIFF OMITTED] TP19JY22.020

    (2) Gas fired absorption air conditioners must be listed or 
certified in accordance with ANSI Z21.40.1, (incorporated by reference, 
see Sec.  3280.4), and certified by a nationally recognized testing 
agency capable of providing follow-up service.
* * * * *
0
40. Amend Sec.  3280.715 as follows:
0
a. Revise the introductory text of paragraph (a)(1) and designate the 
table immediately following paragraph (a)(1) as table 1 to paragraph 
(a)(1); and,
0
b. Revise paragraph (c) and the introductory text of paragraph (e),
    The revisions read as follows:


Sec.  3280.715   Circulating air systems.

    (a) * * * (1) Supply air ducts, fittings, and any dampers contained 
there-in must be made of galvanized steel, tin-plated steel, or 
aluminum, or must be listed as Class 0 or Class 1 air ducts in 
accordance with UL 181 (incorporated by reference, see Sec.  3280.4). 
Air ducts and air connectors located within three feet of the furnace 
discharge must be rated to withstand the maximum air discharge 
temperature of the equipment. Air connectors must not be used for 
exterior manufactured home duct connections. A duct system integral 
with the structure must be of durable construction that can be 
demonstrated to be equally resistant to fire and deterioration as 
required by this section. Ducts constructed of sheet metal must be in 
accordance with the following table:
* * * * *
    (c) Joints and seams. Joints and seams of sheet metal and factory-
made flexible ducts, including trunks, branches, risers, crossover 
ducts, and crossover duct plenums, shall be mechanically secured and 
made substantially airtight. Slip joints in sheet metal ducts shall 
have a lap of at least one inch (``1'') and shall be mechanically 
fastened. Tapes or caulking compounds shall be permitted to be used for 
sealing mechanically secure joints. Sealants and tapes shall be applied 
only to surfaces that are dry and dust-, dirt-, oil-, and grease-free. 
Tapes and mastic closure systems for use with factory-made rigid 
fiberglass air ducts and air connectors shall be listed in accordance 
with UL 181A (incorporated by reference, see Sec.  3280.4). Tapes and 
mastic closure systems used with factory-made flexible air ducts and 
air connectors shall be listed in accordance with UL 181B, 
(incorporated by reference, see Sec.  3280.4).
* * * * *
    (e) Registers and grilles. Fittings connecting the registers and 
grilles to the duct system must be constructed of metal or material 
that complies with the requirements of Class 1 or 2 ducts under UL 181 
(incorporated by reference, see Sec.  3280.4). Air supply terminal 
devices (registers) when installed in kitchen, bedrooms, and bathrooms 
must be equipped with adjustable closeable dampers. Registers or 
grilles must be constructed of metal or conform with the following:
* * * * *
0
41. Amend Sec.  3280.801 by revising paragraphs (a) and (b) to read as 
follows:


Sec.  3280.801   Scope.

    (a) This subpart I incorporates by reference NFPA 70, the National 
Electrical Code (incorporated by reference, see Sec.  3280.4) including 
Part II of Article 550 of NFPA 70, and covers the electrical conductors 
and equipment installed within or on manufactured homes and the 
conductors that connect manufactured homes to a supply of electricity. 
However, Articles 550.4(A) and 550.4(B) of NFPA 70 shall not apply.
    (b) In addition to the requirements of this part and Part II of 
Article 550 of NFPA 70, the applicable portions of other Articles of 
NFPA 70 referenced in this part must be followed for electrical 
installations in manufactured homes. The use of arc-fault breakers 
under the NFPA 70, are only required for general lighting circuits. 
Smoke alarms installed on a dedicated circuit do not require arc fault 
protection. Wherever arc-fault breakers are provided, such use must be 
in accordance with NFPA 70. Wherever the requirements of this part 
standards differ from NFPA 70, these standards apply.
* * * * *
0
42. Amend Sec.  3280.802 by revising paragraph (a)(21) to read as 
follows:

[[Page 43164]]

Sec.  3280.802   Definitions.

* * * * *
    (21) Feeder assembly means the overhead or under-chassis feeder 
conductors, including the grounding conductor, together with the 
necessary fittings and equipment, or a power supply cord approved for 
manufactured home use, designed for the purpose of delivering energy 
from the source of electrical supply to the distribution panelboard 
within each dwelling unit.
* * * * *
0
43. Amend Sec.  3280.803 by revising paragraphs (a) and (k)(1) and (3) 
to read as follows:


Sec.  3280.803   Power supply.

    (a) The power supply to the manufactured home must be a feeder 
assembly consisting of not more than one listed 50 ampere manufactured 
home power supply cord, or a permanently installed circuit. A 
manufactured home that is factory equipped with gas or oil-fired 
heating equipment and cooking appliances is permitted to be provided 
with a listed power supply cord rated 40 amperes. This section does not 
apply to multi-dwelling unit manufactured homes.
* * * * *
    (k) * * *
    (1) One mast weatherhead installation installed in accordance with 
Article 230 of NFPA No. 70 (incorporated by reference, see Sec.  
3280.4), containing four continuous insulated, color-coded, feeder 
conductors, one of which shall be an equipment grounding conductor; or
* * * * *
    (3) Service equipment installed in or on the manufactured home, 
provided that all of the following conditions are met:
    (i) In its written installation instructions, the manufacturer must 
include information indicating that the home must be secured in place 
by an anchoring system or installed on and secured to a permanent 
foundation;
    (ii) The installation of the service equipment complies with 
Article 230 of NFPA 70. Exterior service equipment or the enclosure in 
which it is to be installed must be weatherproof, and conductors must 
be suitable for use in wet locations;
    (iii) The installation of the service equipment complies with 
Article 230 of NFPA 70. Exterior service equipment or the enclosure in 
which it is to be installed must be weatherproof, and conductors must 
be suitable for use in wet locations;
    (iv) Bonding and grounding of the service must be in accordance 
with Article 250 of NFPA 70;
    (v) The manufacturer must include in its installation instructions 
one method of grounding the service equipment at the installation site. 
The instructions must clearly state that other methods of grounding are 
found in Article 250 of NFPA 70;
    (vi) The minimum size grounding electrode conductor must be 
specified in the instructions; and
    (vii) A red warning label must be mounted on or adjacent to the 
service equipment. The label must state the following: WARNING--DO NOT 
PROVIDE ELECTRICAL POWER UNTIL THE GROUNDING ELECTRODE(S) IS INSTALLED 
AND CONNECTED (SEE INSTALLATION INSTRUCTIONS).
0
44. Amend Sec.  3280.804 as follows:
0
a. Revise paragraphs (a) and (c);
0
b. Revise the introductory text of paragraph (g), add and reserve 
paragraph (g)(2);
0
c. Revise paragraph (k); and
0
d. Add paragraph (m).
    The revisions and addition read as follows:


Sec.  3280.804   Disconnecting means and branch-circuit protective 
equipment.

    (a) The branch-circuit equipment is permitted to be combined with 
the disconnecting means as a single assembly. Such a combination is 
permitted to be designated as a distribution panelboard. If a fused 
distribution panelboard is used, the maximum fuse size for the mains 
shall be plainly marked, with the lettering at least \1/4\ inch high 
and visible when fuses are changed. See Article 110.22 of NFPA 70 
(incorporated by reference, see Sec.  3280.4), concerning the 
identification of each disconnecting means and each service, feeder, or 
branch circuit at the point where it originated, and the type of 
marking needed.
* * * * *
    (c) A single disconnecting means must be provided in each dwelling 
unit, consisting of a circuit breaker, or a switch and fuses and its 
accessories, installed in a readily accessible location near the point 
of entrance of the supply cord or conductors into the dwelling unit.
* * * * *
    (g) Branch-circuit distribution equipment must be installed in each 
dwelling unit and must include overcurrent protection for each branch 
circuit consisting of either circuit breakers or fuses.
* * * * *
    (k) When a home is provided with installed service equipment, a 
single disconnecting means for disconnecting the branch circuit 
conductors from the service entrance conductors must be provided in 
accordance with Article 230, Part VI of NFPA 70 (incorporated by 
reference, see Sec.  3280.4). The disconnecting means shall be listed 
for use as service equipment. The disconnecting means may be combined 
with the disconnect required by paragraph (c) of this section. The 
disconnecting means shall be rated not more than the ampere supply or 
service capacity indicated on the tag required by paragraph (l) of this 
section.
* * * * *
    (m) A service distribution panel must be factory installed and 
connected to the subpanels on multi-dwelling unit manufactured homes.
0
45. Amend Sec.  3280.805 by revising paragraphs (a)(1) and (3)(iv) to 
read as follows:


Sec.  3280.805   Branch circuits required.

    (a) * * *
    (1) Lighting. For lighting, based on a 3 volt-amperes per square 
foot times outside dimensions of each dwelling unit (coupler excluded) 
divided by 120 volts times amperes to determine the number of 15 or 20 
ampere lighting area circuits.
* * * * *
    (3) * * *
    (iv) The rating of the range branch circuit is based on the range 
demand as specified for ranges in Sec.  3280.811(a)(5). For central air 
conditioning, see Article 440 of NFPA 70 (incorporated by reference, 
see Sec.  3280.4).
* * * * *
0
46. Amend Sec.  3280.806 by revising paragraphs (a)(2) and (d)(8) to 
read as follows:


Sec.  3280.806   Receptacle outlets.

    (a) * * *
    (2) Installed according to Article 406.3 of NFPA 70 (incorporated 
by reference, see Sec.  3280.4).
* * * * *
    (d) * * *
    (8) At least one receptacle outlet shall be installed outdoors. 
Additional outdoor receptacles shall be installed in accordance with 
Article 210.52(E)(3) of NFPA 70 (incorporated by reference, see Sec.  
3280.4), except those balconies, decks, or porches with an area of less 
than 20 square feet are not required to have an additional receptacle 
installed.
* * * * *
0
47. Amend Sec.  3280.807 by revising paragraph (c) to read as follows:


Sec.  3280.807   Fixtures and appliances.

* * * * *
    (c) Where a lighting fixture is installed over a bathtub or in a 
shower

[[Page 43165]]

stall, it must be listed for wet locations. See also Article 410.4(D) 
of NFPA 70 (incorporated by reference, see Sec.  3280.4).
* * * * *
0
48. Amend Sec.  3280.808 by revising paragraphs (a), (k), (l), and (p) 
to read as follows:


Sec.  3280.808   Wiring methods and materials.

    (a) Except as specifically permitted by this part, the wiring 
methods and materials specified in NFPA 70 (incorporated by reference, 
see Sec.  3280.4) must be used in manufactured homes.
* * * * *
    (k) Where outdoor or under-chassis line voltage (120 volts, nominal 
or higher) wiring is exposed to moisture or subject to physical damage, 
it must be protected by a conduit or raceway approved for use in wet 
locations. The conductors must be suitable for use in wet locations.
    (l) Outlet boxes of dimensions less than those required in Table 
314.16(A) of NFPA 70 (incorporated by reference, see Sec.  3280.4), are 
permitted provided the box has been tested and approved for that 
purpose.
* * * * *
    (p) A substantial brace for securing a box, fitting, or cabinet 
must be as described in Article 314.23(B) of NFPA 70 (incorporated by 
reference, see Sec.  3280.4), or the brace, including the fastening 
mechanism to attach the brace to the home structure, must withstand a 
force of 50 lbs. applied to the brace at the intended point(s) of 
attachment for the box in a direction perpendicular to the surface on 
which the box is installed.
* * * * *
0
49. Amend Sec.  3280.810 by revising paragraph (b)(3) to read as 
follows:


Sec.  3280.810   Electrical testing.

* * * * *
    (b) * * *
    (3) Electrical polarity checks to determine that connections have 
been made in accordance with applicable provisions of these standards 
and Article 550.17 of NFPA 70 (incorporated by reference, see Sec.  
3280.4). Visual verification is an acceptable electrical polarity 
check.
0
50. Amend Sec.  3280.811 by revising the introductory text of paragraph 
(b) to read as follows:


Sec.  3280.811   Calculations.

* * * * *
    (b) The following is an optional method of calculation for lighting 
and appliance loads for manufactured homes served by single 3-wire 120/
240 volt set of feeder conductors with an ampacity of 100 or greater. 
The total load for determining the feeder ampacity may be computed in 
accordance with the following table instead of the method previously 
specified. Feeder conductors whose demand load is determined by this 
optional calculation are permitted to have the neutral load determined 
by Article 220.61 of NFPA 70 (incorporated by reference, see Sec.  
3280.4). The loads identified in the table as ``other load'' and as 
``Remainder of other load'' must include the following:
* * * * *
0
51. Amend Sec.  3280.1003 by revising paragraph (a)(1) to read as 
follows:


Sec.  3280.1003   Attached manufactured home unit separation.

    (a) * * * (1) Attached manufactured homes shall be separated from 
each other by a fire separation wall of not less than 1-hour fire-
resistive rating with exposure from both sides on each attached 
manufactured home unit when rated based on tests in accordance with 
ASTM E119 (incorporated by reference, see Sec.  3280.4).
* * * * *

PART 3282--MANUFACTURED HOME PROCEDURAL AND ENFORCEMENT REGULATIONS

0
52. The authority citation for part 3282 continues to read as follows:

    Authority:  15 U.S.C. 2697, 28 U.S.C. 2461 note, 42 U.S.C. 
3535(d), 5403, and 5424.

0
53. Amend Sec.  3282.7 by revising paragraphs (t) and (v) and removing 
paragraph (oo) to read as follows:


Sec.  3282.7   Definitions.

* * * * *
    (t) Length of Manufactured Home is defined in Sec.  3280.2 of this 
chapter.
* * * * *
    (v) Manufactured Home is defined in Sec.  3280.2 of this chapter.
* * * * *


Sec.  3282.8   [Amended].

0
54. Amend Sec.  3282.8 by removing paragraph (l).

PART 3285--MODEL MANUFACTURED HOME INSTALLATION STANDARDS

0
55. The authority citation for part 3285 continues to read as follows:

    Authority:  42 U.S.C. 3535(d), 5403, 5404, and 5424.

0
56. Amend Sec.  3285.5 as follows:
0
a. Add, in alphabetical order, definition for ``peak cap assembly'';
0
b. Remove definition for ``Peak capconstuction'' and add, in its place, 
a definition for ``Peak cap construction'';
0
c. Add, in alphabetical order, definitions for ``peak cap assembly'' 
and ``peak flip assembly''
0
d Remove definition for ``Peak flipconstruction'' and add, in its 
place, a definition for ``Peak flip construction''.
    The additions read as follows:


Sec.  3285.5   Definitions.

* * * * *
    Peak cap assembly means any roof peak assembly that is either 
shipped loose or site completed and is site installed to finish the 
roof ridge/peak of a home.
    Peak cap construction means any roof peak construction that is 
either shipped loose or site constructed and is site installed to 
complete the roof ridge/peak of a home. Peak flip assembly means any 
roof peak assembly that requires the joining of two or more cut top 
chord members on site. The cut top chords must be joined at the factory 
by straps, hinges, or other means.
    Peak flip construction means any roof peak construction that 
requires the joining of two or more cut top chord members on site. The 
cut top chords must be joined at the factory by straps, hinges, or 
other means.
* * * * *
0
57. Amend Sec.  3285.503 by revising paragraph (b) to read as follows:


Sec.  3285.503   Optional appliances.

* * * * *
    (b) Fireplaces and wood-stoves. When not provided by the home 
manufacturer, fireplaces and wood-stoves must be listed for residential 
use and must be installed in accordance with their listings.
* * * * *
0
58. Add Sec.  3285.506 to subpart F to read as follows:


Sec.  3285.506   Testing and certification of fire sprinkler systems 
for multi-dwelling units.

    The installer will certify and test residential fire sprinkler 
systems on site in accordance with home manufacturer's instructions and 
as outlined in Sec.  3280.214 of this chapter. The installer should 
ensure that a required listed minimum water supply is available for the 
system. Testing requirements are to be consistent with Sec.  
3280.612(a) of this chapter and certified by the installer.
0
59. Amend Sec.  3285.603 by revising paragraphs (d)(3) and (e)(1) to 
read as follows:


Sec.  3285.603   Water supply.

* * * * *

[[Page 43166]]

    (d) * * *
    (3) Only heat tape or pipe heating cable listed and certified for 
its intended purpose is permitted for use, and it must be installed in 
accordance with tape or cable manufacturer installation instructions.
    (e) * * * (1) The water system must be inspected and tested for 
leaks after completion at the site. The installation instructions must 
provide testing requirements that are in accordance with the piping 
manufacturer's instructions.
* * * * *
0
60. Amend Sec.  3285.801 by revising paragraph (f)(2) to read as 
follows:


Sec.  3285.801   Exterior close-up.

* * * * *
    (f) * * *
    (2) In which the roof pitch of the hinged roof is less than 7:12, 
including designs incorporating peak cap or peak flip assembly 
components; and
* * * * *

PART 3286--MANUFACTURED HOME INSTALLATION PROGRAM

0
61. The authority citation for part 3286 continues to read as follows:

    Authority:  42 U.S.C. 3535(d), 5404, and 5424.

0
62. Revise Sec.  3286.103 to read as follows:


Sec.  3286.103   DAPIA-approved installation instructions.

    (a) Providing instructions to purchaser or lessee. (1) For each 
manufactured home sold or leased to a purchaser or lessee, the retailer 
must provide the purchaser or lessee with the manufacturer's DAPIA-
approved installation instructions for the home, a copy of which is 
shipped with the home in accordance with Sec.  3285.2 of this chapter.
    (2) If the installation requires a design that is different from 
that provided by the manufacturer in paragraph (a)(1) of this section, 
the installation design and instructions must be prepared and certified 
by a professional engineer or registered architect, that have been 
approved by the manufacturer and the DAPIA as providing a level of 
protection for residents of the home that equals or exceeds the 
protection provided by the federal installation standards in part 3285 
of this chapter. The retailer or manufacturer must provide the 
installation design and instructions to the purchaser or lessee.
    (b) Providing instructions to installer. When the retailer or 
manufacturer agrees to provide any set up in connection with the sale 
of the home, the retailer or manufacturer must provide to the licensed 
installer a copy of the approved installation instructions required in 
paragraph (a)(1) or (2) of this section or, as applicable, to each 
company or, in the case of sole proprietor, to each individual who 
performs setup or installation work on the home.
0
63. Amend Sec.  3286.205 by revising paragraph (d) to read as follows:


Sec.  3286.205   Prerequisites for installation license.

* * * * *
    (d) Insurance and either a surety bond or irrevocable letter of 
credit. An applicant for an installation license must provide evidence 
of and must maintain, when available in the state of installation, 
insurance and either a surety bond or irrevocable letter of credit that 
will cover the cost of repairing all damage to the home and its 
supports caused by the installer during the installation up to and 
including replacement of the home. HUD may require the licensed 
installer to provide proof of the surety bond or insurance at any time. 
The licensed installer must notify HUD of any changes or cancellations 
with the insurance coverage, surety bond, or irrevocable letter of 
credit.
0
64. Amend Sec.  3286.207 by revising paragraph (d) to read as follows:


Sec.  3286.207   Process for obtaining installation license.

* * * * *
    (d) Proof of insurance and either a surety bond or irrevocable 
letter of credit. Every applicant for an installation license must 
submit the name and proof of the applicant's insurance carrier and the 
number of the policy, surety bond, or irrevocable letter of credit 
required in Sec.  3286.205(d).
* * * * *
0
65. Amend Sec.  3286.209 by revising paragraph (b)(8)(vi) to read as 
follows:


Sec.  3286.209   Denial, suspension, or revocation of installation 
license.

* * * * *
    (b) * * *
    (8) * * *
    (vi) Failure to maintain the insurance and either a surety bond or 
irrevocable letter of credit, required by Sec.  3286.205(d).
* * * * *
0
66. Amend Sec.  3286.409 by revising paragraph (b) to read as follows:


Sec.  3286.409   Obtaining inspection.

* * * * *
    (b) Contract rights not affected. Failure to arrange for an 
inspection of a home within 10 business days will not affect the 
validity or enforceability of any sale or contract for the sale of any 
manufactured home.
* * * * *

Julia Gordon,
Assistant Secretary for Housing--Federal Housing Commissioner.
[FR Doc. 2022-14701 Filed 7-18-22; 8:45 am]
BILLING CODE 4210-67-P