[Federal Register Volume 64, Number 26 (Tuesday, February 9, 1999)]
[Notices]
[Pages 6377-6378]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 99-3049]



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DEPARTMENT OF THE INTERIOR

Geological Survey


Federal Geographic Data Committee (FGDC); Public Review of the 
Geospatial Positioning Accuracy Standards, Part 4: Architecture, 
Engineering, Construction, and Facilities Management

ACTION: Notice; Request for comments.

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SUMMARY: The FGDC is conducting a public review of the Geospatial 
Positioning Accuracy Standards, Part 4: Architecture, Engineering, 
Construction, and Facilities Management. The purpose of this public 
review is to provide software vendors, data users and producers with an 
opportunity to comment on this standard in order to ensure that it 
meets their needs.
    Participants in the public review are encouraged to provide 
comments that address specific issues/changes/additions that may result 
in revisions to the draft Geospatial Positioning Accuracy Standards, 
Part 4: Architecture, Engineering, Construction, and Facilities 
Management. All participants who make comments during the public review 
period will receive an acknowledgment of the receipt of their comment. 
After comments have been considered, participants will receive 
notification of how their comments were addressed. After the formal 
adoption of the standard by the FGDC, the revised standard and a 
summary analysis of the changes will be made available.

DATES: Comments must be received on or before May 20, 1999.

CONTACT AND ADDRESSES: The draft standard is posted at Internet 
address: http://www.fgdc.gov/standards/documents/standards/accuracy/
chapter4.pdf.
    Requests for written copies of the standard should be addressed to 
``Geospatial Positioning Accuracy Standards, Part 4: Architecture, 
Engineering, Construction, and Facilities Management'', FGDC 
Secretariat (attn: Jennifer Fox), U.S. Geological Survey, 590 National 
Center, 12201 Sunrise Valley Drive, Reston, Virginia 20192; or 
facsimile 703-648-4270; or Internet at [email protected].
    Reviewer's comments may be sent to the FGDC via Internet mail to: 
www.fgdc.gov">gdc-geoposp4@www.fgdc.gov. Reviewer comments may also be sent to the 
FGDC Secretariat at the above address. Please send one hardcopy version 
of the comments and a soft copy version, preferably on a 3.5x3.5 
diskette in WordPerfect 5.0 or 6.0/6.1 format.
    For answers to general questions related to this standard, please 
contact the Federal Geographic Data Committee (FGDC) Facilities Working 
Group.

SUPPLEMENTARY INFORMATION: Following is the complete proposal for the 
``Geospatial Positioning Accuracy Standards, Part 4: Architecture, 
Engineering, Construction, and Facilities Management.''
    Project Title: Geospatial Positioning Accuracy Standards, Part 4: 
Architecture, Engineering, Construction, and Facilities Management.
    Submitting Organization: Federal Geographic Data Committee (FGDC) 
Facilities Working Group.

Objectives

    This Part 4 provides accuracy standards for engineering drawings, 
maps, and surveys used to support planning, design, construction, 
operation, maintenance, and management of facilities, installations, 
structures, transportation systems, and related projects. It is 
intended to support geospatial mapping data used in various engineering 
documents, such as architectural, engineering, and construction (A/E/C) 
drawings, site plans, regional master planning maps, and related 
Geographical Information System (GIS), Computer-Aided Drafting and 
Design (CADD), and Automated Mapping/Facility Management (AM/FM) 
products. These products are typically created from terrestrial, 
satellite, acoustic, or aerial mapping techniques that ouput 
planimetric, topographic, hydrographic, or feature attribute data.

Scope

    This standard defines accuracy criteria, accuracy testing 
methodology, and accuracy reporting criteria for object features 
depicted on A/E/C spatial data products and related control surveys. It 
references established voluntary standards that may be used for some 
smaller scale A/E/C mapping applications. In addition, Appendix A 
contains general guidance for specifying accuracy criteria for selected 
types of A/E/C features or control surveys. Using the standards and 
guidance contained in this section, end users of A/E/C products (e.g., 
planners, designers, constructors) can specify surveying and mapping 
accuracy requirements needed for their projects or specific CADD/GIS 
layers, levels, or entities. From these specifications, data producers 
(e.g., surveyors, mappers, photogrammetrists) can determine the 
instrumentation, procedures, and quality control processes required to 
obtain and verify the defined accuracies.

Applicability

    These standards are applicable to geospatial data products used on 
various A/E/C or facilities management projects. A/E/C projects are 
normally confined to small geographical areas typically less than 4,000 
ha (10,000 acres) where simple survey techniques are employed to 
establish project control points, perform topographic or 
photogrammetric mapping, or provide construction layout and alignment 
control. Unlike geospatial map products covered under PART 3, A/E/C 
data products are often only locally referenced within a project site, 
may not contain absolute georeferenced coordinates, and are typically 
compiled at scales larger than 1:20,000 (1 in = 1,667 ft). These 
standards may apply to the following types of engineering applications: 
transportation systems (roads, railroads, airfields, canals); utility 
systems (water supply, sanitary sewer, fuel, communication, electrical, 
mechanical); residential, commercial, recreational, and industrial 
structures and facilities; flood control and navigation systems (dams, 
levees, locks); architectural site or landscape plans; engineering 
master planning studies; environmental mapping, modeling, and 
assessment studies; hydraulic and hydrological studies; geophysical 
exploration surveys; and construction measurement and payment surveys. 
These standards do not generally apply to architectural, mechanical, or 
electrical detail data inside of a building or structure that are 
typically used win the CADD system for engineering and design.

Related Standards

    This standard was largely taken from existing U.S. Army Corps of 
Engineers engineering, surveying, and mapping standards, and from 
Department of Defense Tri-Service Facility Engineering CASS/GIS 
standards--see References. The American Society for Photogrammetry and 
Remote Sensing (ASPRS) ``Accuracy Standards for Large-Scale Maps'' 
outlined in PART 3, Appendix B, is also directly applicable to PART 4--
see paragraph 4.4.1 for specific relationships between ASPRS and Part 
4.
    This PART 4 may be used in conjunction with, or independent of, 
other Parts of the overall Geospatial Positioning Accuracy Standard. 
PART 1 Reporting Methodology applies directly to this Part, in 
particular, accuracy standard reporting. Certain portions of Part 2, 
Standards for Geodetic Networks, apply to A/E/C projects or features 
within an A/E/C project that are

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connected by control surveys to an established regional geodetic 
control network (i.e., geo-referenced). PART 2 does not apply to 
engineering, construction, topographic, or photogrammetric mapping 
surveys that are referenced to boundary control or physical features 
(streets, structures, etc.) within, or adjacent, to the project site. 
If A/E/C projects, or sub features within a project, are connected by 
control surveys to an established regional geodetic control network 
(i.e., geo-referenced), then certain portions of PART 2 may be 
applicable. PART 3, National Standard for Spatial Data Accuracy, 
applies to those A/E/C map products that are fully geo-referenced. The 
spatial accuracy definitions, accuracy testing, and accuracy reporting 
criteria in PART 3 may be used for georeferenced A/E/C map products. 
Part 4 applies to marine construction and dredging of navigation 
channels, including related hydrographic surveying support. PART 5 
should be consulted for hydrographic surveying standards applicable to 
preparation of nautical charts.

Standards Development Procedures

    This standard was developed and periodically reviewed by the FGDC 
Facilities Working Group during the period 1996-1998. The initial draft 
of the standard was taken from U.S. Army Corps of Engineers Engineer 
Circular 1110-1-87, Standards for Maps, Drawings, Engineering Surveys, 
Construction Site Plans, and Related Geospatial Data Products.

Maintenance Authority

    The U.S. Army Corps of Engineers is responsible for developing and 
maintaining the A/E/C geospatial positional accuracy data standards for 
the Facilities Working Group of the Federal Geographic Data Committee. 
Address questions concerning the standards to: Headquarters, U.S. Army 
Corps of Engineers, ATTN: CECW-EP (W.A. Bergen), 20 Massachusetts 
Avenue NW, Washington, DC 20314-1000.

    Dated: January 28, 1999.
Richard E. Witmer,
Chief, National Mapping Division, Geological Survey.
[FR Doc. 99-3049 Filed 2-8-99; 8:45 am]
BILLING CODE 4310-Y7-M