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FIVE ISIANDS VdIARF STUDY GEORGETOWN, @UAINE/ June. 7,1990 ow COASTAL ZONE INFORMATION CENTER TC 357 15 8 1990 K niba- -c- - I-- ia- 0 W- FIVE ISLANDS INHARF STUDY Cr too GEORGETOWN, MAINE/ June 7, 1990 TEPHEN C DEMN K @C 9 No 232 -vs@, , Ifies IS AW Prepared for: Town Owned Property Management Board Georgetown, Maine Prepared by: KIMBAlL CHASE COMPANY, INC. Stepfien C- DeWick P.E. Project Manager - ;OO,--e- of@, David 13. Kinney Project Engineer Kimball Chase 53 Front Street Bath June 6, 1990 Maine 04530 (207) 443-1361 Mr. Carroll Plummer, Chairman FAX (207) 442-702.9 Town Owned Property Management Board Town Office Georgetown, Maine 04548 Subject: Five Islands Wharf Study 89-2783 Final Report Dear Mr. Plummer: In accordance with our agreement, dated October 18, 1989, we are pleased to submit our report on the Five Islands Wharf. The data upon which this study and its recommendations, have been based are the most current available. The advice and participation by the Board and members of your community have been appreciated while conducting this study. Thank you for selecting Kimball Chase to assist you with this study. Very truly yours, Kimball Chase Company, Inc. Stephen C. DeWick, P.E. Project Manager SCD/sla Enclosures cc: Kirk Schlummer, DECD (7 copies) PROJECT CREDITS This project has been sponsored by the Town of Georgetown, Maine. Administration of the Project has been under the direction of the Town Owned Property Management Board. Members of the Board included: Carroll Plummer, Chairman Ken MaIsch Frank Sarcione "Financial assistance for preparation of this document was provided by a Grant from MAINE'S COASTAL PROGRAM, through funding provided by U.S. Department of Commerce, Office of Coastal Zone Management, under the Coastal Zone Management Act of 1972, as amended." The cooperation and assistance of the people responding to the questionnaire is appreciated. '-vabl,.-- . of Conternts Section Page 1 Summary & Findings ...................... 1 2 Introduction ............................ 3 3 Survey Techniques/Condition Survey .......... 5 4 Wharf Maintenance Options ............... is 5 Rebuilt Wharf ......................... 23 6 Conceptual Plan ........................ 27 List of Tables Table PaF,,,e I Life of Wood Members .................... 18 2 Option I Maintenance .................... 19 3 Wharf Upgrade Costs ................... 20 4 Option 2 Maintenance ..................... 21 5 Rebuilt Wharf ......................... 23 6 Rebuilt Wharf Annual Maintenance .......... 24 7 Conceptual Plan Costs ................... 27 List of Figares Figgr Page I Project Location ......................... 4 2 Project Photos .......................... @ 7 3 Project Photos ................... 8 4 Project Photos ................... 9 5 Project Photos .......................... 10 6 Project Photos ............... * .......... 11 7 Project Photos .......................... 12 8 Project Photos ........................... 13 9 Project Photos ......................... 14 10 Project Photos .......................... 15 11 Project Photos .......................... 16 12 Project Photos .......................... 17 13 Wharf Plan ............................ 25 14 Wharf Elevation ......................... 26 15 Conceptual Plan ........................... 28 Appendix A-1 Scope of Services ....................... A-1 SECHON I SUNfMARY & FINDINGS Summ Inspections of the Five Islands Wharf were made by the proj ect team on October 18, and 26, 1989. The wharf was also thoroughly inspected with the Town Owned Property Management Board (TOPMB) on October 21, 1989. During these visits, detailed measurements of the wharf were made, penetrations and probings of wooden members were conducted and records prepared of the wharf s overall condition. Findings Based upon the investigations described above, the following findings have been made: 1) The wharf, which was reconstructed in 1978, is in moderately good condition. 2) The wharf decking has been partially replaced with new decking since 1978. Much of the remaining deck will require replacement over the next five years. 3) The support timbers under the decking are arranged in an orderly fashion, except for those under the south side, and those next to the Cooker/Cooler building. Wooden blocking bias been used to achieve the correct support height over some of the shorter piles. 4) Many of the piles resting upon ledge are pinned. Evidence of anchor ties, which were also pinned, are still visible but are not in use. 5) The wharf s general structural integrity is achieved through numerous cross braces which are arranged in an orderly fashion and are generally in good condition. 6) The piles are arranged in a fashion to take advantage of the ledge conditions and with limited surficial material available at the outer eastern end. Most piles seem to be in good condition, with the exception of 5 piles on the south side. 7) The Love Nest, which is the oldest building at the wharf, is in fair condition. The original hand hewn beams, are visible in most of the structure. Much of the wiring, plumbing, and more recent improvements do not comply with the latest building codes. 8) The Shrimp Building, which was built in 1970, is in good condition and is comprised of a concrete floor. The reinforcing arrangement in the concrete floor is unknown. Floor drains located at convenient spots within the floor discharge directly on to many of the piles and cross members. The electrical wiring system beneath the building does not comply with existing codes. 9) The Cooker/Cooler Building, which contains the bait shed and the steam cooker for lobsters, clams, and corn is in a state of disrepair. Much of the concrete floor, especially in the bait shed, is broken and structural integrity of the decking beneath it is questionable. The addition to the north of this building is of no use in its current state. 10) A public nuisance condition exists most of the time beneath the Bait Shed, the Love Nest, and a portion of the Shrimp Building. This is caused by bait, wash water, and other waste materials discharging untreated to a pocket in the ledge. This pocket drains slowly and generally filled with wastewater which emanates a significant odor. 2 SECITON 2 INTRODUCITON The Five Islands Wharf is located in the Village of Five Islands, on the eastern shore of Georgetown, Maine. The Village name originates from the five islands located near the Village, which include Crow, Malden, Hen, Mink, and Wood Islands (see Figure 1). The wharf is located on town-owned property and serves the purposes of local fishermen and the general public. The history of the wharf dates back to 1753, as discussed in the publication "Preserving An Inheritance" by Martha Oaks, 1982. In its early days, the wharf served as a facility associated with steamboat lines. The wharf was reconstructed in 1877 for H.G. Rowe & Company. During the hurricane of 1978, the wharf was ractically demolished. It was replaced at that time in its current state, which is the subject of this study. Demands for the wharfs use have increased, particularly as it relates to public access. The wharf s future ability to serve both the needs of the local fishermen and the general public will be one of the challenges the TOPMB will have to meet. This study is being funded jointly by the Town of Georgetown and by a Coastal Zone Management Grant from the Department of'Economic and Community Development. This initial study is the first phase in a long-range program to upgrade the wharf facilities at Five Islands. 3 3 Q' i7@ h mj rk.!sland 11 @fk I Ce r r7@, d ree N 41 36 0 64 px lslar'@" icl_ 10 b .7 /5 B lip B Dogfi Head 13 IM Fu r 0 @sl a n 0@@ 9 PROJECT LOCATION 1/0 34 5 53 I 7L 4!1' Her 7 7- idn k@ :! -@ I I ,9@d m 65 en Isl X/ @a_v d. j" 0 all t 7j 45 r 135 60,", /1 Z7 93 94 243 1 95 -y pt V@ /so jj 2, 80- Dry" X;9 V/ ul Ledge. I < 115 68 83 @jh "Little Ai' 108 37) J 'Good Harbor N FEET). GURE1 F1 e000 LOCATION MAP e ),/- CONDITION SURVEY KiMball FIVE ISLANDS WHARF Cbase GEORGETOWN, MAINE SECTION 3 SURVE-Y TECHNIQUESICONDITION SU RVEY After reviewing the scope of services (see Appendix A) agreed to by the TOPMB and Kimball Chase Company, atwo-man team of engineering technicians inspected the Five Islands Wharf. Inspections by the team took place on October 18, and 26, 1989. The first inspection was scheduled to correspond with low tide which occurred at 7:50 a.m., while the second inspection was scheduled to occur at high tide at 8:34 a.m. Inspections at these different tide stages allowed detailed investigations of the lower portion of the piles secured to ledge, as well as pile condition directly beneath the timber supports and decking. During both inspections, detailed measurements were made of the decking, the piles, support timbers, cross bracing, and the three, buildings situated on the wharf. From these measurements, plans were prepared. The total area of the wharf's deck is 6,460 square feet. The Cooker/Cooler Building measures 695 � square feet, the shrimp building measures 720 � square feet and the Love Nest is 525 � square feet. The elevation of the wharf is 11.2 feet above mean sea level (15.7 feet above low tide). All members of the wharf, including the deck support timbers, piles and cross bracing were tested for structural integrity. Ice pick penetrations ranged from 1/2 to 1 inch in the deck, 1/2 to 2 inches in the support timbers, and 1/4 to 5/8 inches in the piles and cross bracing. Moist conditions and rot were evident under the decking and under some of the support timber, particularly toward the south side. A survey of the building was conducted to determine the general structural condition, exterior condition and the adequacy of the utilities. Photographs taken during the survey show: Figure No. Desgdption 2A Rusted hinge under float ramp badly in need of repair 2B Typical pile, beam and rafter 3A South end of dock showing rotting of decking and beam 3B Overall view of south end of dock 4A Typical piles and cross me-mbers, 4B Typical cross beam design, built to gei desired elevation 5 Figige No. Descri.ption 5A Typical piles and cross bracing towards front of dock 5B Typical blocking used for elevation desired 6A Deteriorated deckng out by town float 6B Photo showing decking towards front of dock 7A Severe rotting of beam atsouth end of dock 7B South end of dock showing pipes & wires not to standard codes 8A Typical cross bracing towards front of dock 8B Double row of piles in front of dock 9A Piles and lower unused deck north of Cooker 9B Typical failed beam on lower deck from above, north of Cooker 10A Typical cross bracing under Cook House 10B North end of dock looking, towards Cook House 11A Typical photo showing roving rafters under Cook House 11B Typical rotting decking and beams 12A Town float, some beams showing signs of decay 12B Checking for rot at rafter 6 --"::6*.@".@ - @Wzo@i; . . .... ..... E:3.. @ii @li. @N@n Kk- N-H, rusted hinge under float ramp badly in need of repair. @ii i zz ............. ........... 5 B Typ. pile, bea-m an(J rafter. FIGURE 2 Kimball C2)ase .......... T. .. ... ... ... . WPM. -.0 $g M", A, . . . . . . . . . . . . . . . . . . . . . . . . South end of dock showing rotting of decking and beams. .. .............. . ....... . ......... ....... B N! Overall view of south end of dock. FIGURE 3 Kimball Chase -Vk "N: . . ......... 14 'gw NO pow Typ. piles and cross members. 4 'MM@ ...... ... ... . ...... . Ak: a) 2 sw Typ. cr oss beam design, built to get desired elevation.- FIGUR Ki Chase -b's.6 A.0 N, 'A, AN Wk @,M AN W- Typ. piles and cross bracing towards front of dock. W. F . .. ... ....... @N4 4V . ... . .......... Typ. blocking used for elevation desired. FIGURE 5 Ki 10 Chase UP ... . ... . ....... ..... .. ......... ,zi AIR . ...... @,OAMI A:s, Deteriorated decking out by town float. MIA W, ................0 -Z W". v,; IR MIS ......... . OEM Photo showing decking towards front of dock. FIGURE 6 K, Chase g Al M rT; 0 Severe rotting of b.eam at south end of dock. ........ . . ....... . -4 "M7 . .... ...... V '71 .. . .... . B NO. South end of dock showing pipes and wires not to standard codes. FIGURE 7 Kimball MChase 12 St A-1. A Typ. cross bracing towards front of dock. ;4@ _Op 'A 4. Double row of piles in front of dock. FIGURE 8 Ki 13 Chase .: . . . . . . . . . . . . . Piles and lower unused deck north of Cooker. g,@ NI ip-g. . ......... Typ- failed beams on lower deck from above, north of Cooker. FIGURE 9 Ki "Chase .14 n k,f . . . . . . . . . . . . . . . ........... Typ. cross bracinp, under Cook house. M Xt. North end of dock looking towards Cook house. FIGURE.10 Kimball 15 PmCbase .... ...... .. -W .IMIn I NO ;MM, M., "K . . . . . . . . . . Typ. photo showing rotting rafters under Cook house. 4M . . . ........ W$v Q 0 .. ...... . . . . . . . . . . . . . . ..... . . . . . . . . . . Typ. rotting decking and beams. FIGURE 11 Ki 16 se '4010 . .. .......... . IMP Town float, some beams showing signs of decay. w7l .................. 21-E M Checking for rot at rafter. FIGURE 12 Ki 17 Clime SECTION 4 WHARF MAINTENANCE OPTIONS The condition survey shows much of the Five Islands Wharf to.be in good condition. Parts of the wharf which are not in good condition, include: 0 The Cooker/Cooler Building 0 The North Side of the Wharf Behind the Cooker/Cooler Building 0 The Commercial Gangway and Float 0 Electrical Wiring 0 Building Floor Drains The expected useful life of wood material in a marine environment is listed below: Table I Life of Wood Members Wharf Members Years Support Piles Untreated Softwood 10-15 Treated Softwood 20+ Untreated Oak w/Bark 20+ Pile Caps Untreated 10-15 Treated 20+ Stringers & Cross Bracing Untreated 5- 10 Treated 10-15 Deck Untreated 5 Treated 10 - 15 Qption 1 Repair as needed Maintenance costs for the existing facility, based upon its size, age and general condition, would include expenses for the replacement. of decking and stringers, repaired on an as- needed basis, float and gangway repair and hoist maintenance. The following table presents the expected yearly maintenance costs for the existing wharf anticipating reconstruction in 2003 when pile replacement will be necessary. 118 Table 2 Option I RQairs As Needed Maintenance Matrix (Building New Wharf in Item 19-90 19-91 19-92 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 Decking 510 638 765 893 1020 1148 1275 1403 1530 1658 1785 1913 2040 StrinPrs & 226 620 846 1070 1297 1522 1748 Bracing Pile Caps 312 468 624 624 624 624 Gangways 100 100 2050 50 2025 25 50 50 75 75 100 100 100 (Replaced 1992 & 1994) Railing 150 150 150 150 150 150 150 150 150 150 150 150 '150 Hoist 100 100 100 100 100 100 100 100 100 100 100 100 100 Float Repair 240 240 240 240 240 240 240 240 240 240 240 240 240 Keeper Chains, 300 300 300 300 300 300 300 300 300 300 300 300 300 Fittings, & Float Hdwre. Subtotal $1,626 $1,840 $4,225 $2,201 $4,681 $2,587 $3,185 $2,867 $3,692 $3,147 $4,197 $3,427 $4,678 Contingency 1 210 425 24 469 263 315 283 358 303 403 323 1,472 TOTAL $1,800 $2,050 $@,-650 $2,450 $5,150 $2,850 $3,500 $3,150 $4,050 $3,450 $4,600 $3,750 $5,150 Option 2 Repair as needed after wharf upgrade After an initial upgrade of the wharf with some new piles and some spliced piles, a system of pile caps, stringers, and deck would be constructed. Table 3 below presents the approximate costs of wharf upgrade. The Table 4 on the following page shows the annual maintenance costs after upgrade. Table 3 Wharf )g[ade Costs Demolition 4,250 s.f. @ $10/s.f. $42,500 Cost of Upgrade (Untreated) 65 new piles 21,450 65 spliced piles 11,000 New Pile Caps 15,600 New Stringers 21,900 New Deck 25,500 Subtotal $137,950 Contingency 13P800 Engineering 25,000 Survey 2,500 Boring 0 TOTAL $179,250 10 Table 4 OPTION 2 (PARTIAL UPGRADE) ANNUAL COST FOR WHARF MAINTENANCE Item 1992-1997 1997-2002 2002-2007* 2007-2012 2012-2017 Decking $ 255 $ 510 $5,100 $ 255 $ 510 Stringers & Bracing 325 325 6,430 325 325 Pilecaps - - 312 312 Gangways & Crate Slide 240 240 240 240 240 Railing - 150 150 150 150 Hoist 100 100 100 100 100 Floats 240 240 240 240 240 Keeper Chains, Fittings, - 300 300 300 300 & Float Hardware Subtotal 1,160 1,865 12,560 1,922 2,177 Contingency 140 185 1,240 138 223 TOTAL $ 1,300/yr $ 2,050/yr $13,800/yr $ 2,100/yr @2,400/yr Entire deck replaced between 2002 and 2007. MARTMNANCE PROGRAM A detailed maintenance program contains three (3) specific parts. These are: 1. Condition Survey 2. Preventative Maintenance 3. Restoration/Replacement Detailed maintenance programs should be instituted regardless of the wharf s material, age, or condition. What may vary between programs will be the money spent to maintain the facility. The program proposed for the Five. Islands Wharf should include the following: Frequen@y Annual 2 Years 5 Years 1. Condition Survey A. Inspection of deck X B. Inspection of timber supports X and pile caps C. Inspection of cross-bracing X D. Inspection of piles X E. Inspection of gangways X F. Inspection of chains and moorings X G. Inspection of building exteriors X and roofs H. Inspection of floats X 2. Preventative Maintenance A. Weather treatment applied to deckin! X B. Weather treatment applied to pile caps X and timbers C. Weather protection applied to gangways X D. Painting of building exterior X E. Rust removal and painting of chains X and metal hinges on gangways F. Lubrication of wheels and hinges X on gangways 3. Restoration/Replacement A. Replacement of deck planking X B. Replacement of pile caps X and support timbers C. Replacement of planks and gangways X D. Repair or replacement of chains X E. Replacement of planking on float decks X F. General repair to building exteriors X 22 SECTION 5 REBUILT VVHARF The cost to rebuild the wharf to its existing configuration, with minor changes in elevation, would be approximately $590,609. A detailed breakdown of costs associated with the reconstruction of the wharf is shown in Table 5. Yearly maintenance costs of this option are presented on the following page. Table 5 New Wharf Constructed to Existing Dimensions Desgdption Cost Piles $75,570 Pile Caps 21,408 Stringers 26,884 X-Bracing 18,000 Decking 36,046 Handrail 1)000 Floats 8,000 Gangways 5,500 2 Hoists (1) Relocated 750 (1) New 5,000 ower 10,000 Demolition 64,500 Building Removal & Reset (Love Nest & Shrimp Building) 35,000 Sitework at Shore 7,080 New Cooker/Cooler Building 32,000 Subtotal: $346,738 Contractor's Oveirbead & Profit: 52,010 Contractoes Bond: 10,402 Mobilization: 17.33 $426,487 Contingency: 106,622 Borings: 0 Topo Survey: 2,500 Permits: 5,000 Engineering: 50, TOTAL $590,609 23 m m mow== mm.m M@M' Table 6 Rebuilt Wharf Annual Maintenance Cos Item 1992-1997 1997 2002-2007* 2007-201 2012-201 Decking $ 186 $ 372 $7,440 $ 372 $ 744 Stringers & Bracing 230 460 9,200 460 920 Pilecaps - - - 456 456 Gangways & Crate Slide 240 240 240 240 Railing - 150 150 150 150 Hoist 200 200 200 200 200 Floats 120 240 240 240 240 Keeper Chains, Fittings, - 300 300 300 300 &Float Hardware Subtotal 736 1,962 17,770 2,418 3,250 Contingency 64 188 1.78 232 350 TOTAL $ 800/yr $ 2,150/yr $19,550/yr $ 2,650/yr F3,600/yr Entire deck replaced betweeli 2002 and 2007. 'I T Oo --7i F 14, SCALE: 1/8 MI ON I'M s7 Sou7H ILO SECTION 6 CONCEPTUAL PLAN The conceptual plan, shown in Figure 15, would allow for increased access to all areas of the Five Islands Wharf and would also expand the berthing area. The approximate costs associated with constructing the conceptual plan are as follows: Table 7 Con=tual Plan Costs Piles $53,460 Pile Caps 11,448 Stringers 14,071 X-Bracing; 8,640 Decking 20,124 Handrail 1,800 Floats, Moorings, & Chain 51,300 Gangways 4,320 Cooker/Cooler Building 32,000 Subtotal: $197,163 Contractor's Overhead & Profit: 29,575 Contractor's Bonds: 5,915 Mobilization: 9,858 $242,511 Contingency: 60,689 Borings: 2,500 Topo Survey: 2,500 Perrniis: 5,000 Engineeirig: 25.000 TOTAI-- $338,200 .27 ....... ....... ............................... ............. 95HRIMP OUILVINC3 ............................ . . . . . . . . . ....... ............ . . . . . . . . . . . . . .... ... ... ...... ..... ... ..... . . . .... ..... . . ..... ..... ..... L-OVE NrECE>T ROME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -------------- ....... . . ........ ............ -------------- S-C- A L E: 1/16'= 1 ooooor@ ....... ..... $t'l I I I I I I APPEISM]EX A I SCOPE OF SERVICES I I I I I I I I I I I I SCOPE OF SERVICES The tasks needed to evaluate the condition of the Five Islands wharf and to prepare the engineering study are outlined below. TASK 1 CONDITION SURVEY A condition survey of the Five Islands wharf will be conducted by a civil engineer and a structural engineering technician. Detailed measurements of the wharf and pile support system will be made in order to prepare preliminary plans. Penetration, probings of wooden members will be conducted at selected locations to determincstructural integrity. A detailed list of items and their conditions will be prepared for the wharf. TASK 2 WHARF MAINTE-NANCE OPTIONS Based upon the results of Task 1, a detailed evaluation of maintenance options will be presented. Addressed by each option will be the present condition of the wharf, particularly. as they relate to safety. The following sub-tasks will be conducted: Task2.A An evaluationwill be made assuming no investment and maintenance other than those repairs needed to ensure safety of persons using the facility. This may be limited to replacement of deck planks, and some of the support timbers. Task 2.B Ile second option will evaluate a higher level of maintenance associated with sister piles, splicing of existing piles, and other temporary repairs to prolong the life of the structure and to maintain its existing level of use. Task 2.C If the condition survey indicates the wharf can be used at its current level with on-going maintenance, a detail preventive maintenance program will be developed. M Kimball Cha' TASK 3 REBUff-T WHARF An evaluation will be made to determine the requirements of demolishing and rebuilding the wharf to the existing dimensions, and to the level of use for which it was originally intended. Prepared as part of this task will be the following sub-tasks: Task 3A The expected life of a new wharf, which has been totally rebuilt, Nvill be prepared. A program of basic maintenance will be developed and the costs associated with such maintenance included. Task 33 This silb-task will detail the items of preventive maintenance which must be undertaken to maximize the service life of the new wharf. TASK 4 NEW PIER EXP)kNSION Based upon discussions with the Town Owned Management Board and various users of the existing wharf, preliminary plans for a new expanded facility will be developed. Included in this evaluation will be details concerning the ways and means to accommodate, a larger number of people based. upon the expected increase in use over the useful life of the facility. Also addressed under this task will be those requiremeiAs to permit such tacilities by the Maine Department of Environmental Protection and the U.S. Army Corps of Engineers. A construction cost estimate will be prepared, which will also show other project costs such as engineering, borings, soundings, permits, and construction supervision. TASK 5 ViR=N REPORT 'All of the findings and results from the above tasks wi 11 be included in a written report, presented to the Town Owned Property Management Board. Included in the report will be a summary and clear recommendations for future actions. Also included will be detailed cost estimates in today's dollars, a project implementation schedule along with information concerning possible grants for future phases and construction. Twelve (12) copies of the final report will be presented to the town upon completionof the project. TASK 6 MEETINGS The successful undertaking of this evaluation will include a number of meetings with the Town Owned Property Management Board and others. Mectinas which are anticipated will include, but not be limited to the following: Kirnba 11 Chase i I i i i i I i I I I I I I .I I F T . I I - I I JUN 0 8 9 0 1 1 Initial Project: Meeting to verify scope of work and the requirements of the study. 2. Progress Meeting at 50% completion to review findings of condition survey and details of evaluated options. 3. Final Review will be conducted at the 90% complete stage to 0 verify that the scope of services and requirements of the project have been met. A draft of the final report will be presented at this meeting. 4. Final Meeting - Once the draft of the report has been accepted by the Town Owned Property Management Board, the results of it will be presented at a public meeting. The study will be discussed and -the recommendations will be presented. Komball Chase I I I I I I I I .I I I I I I I I 7-1- 1 i JUN 0 8 9 0 1 I I @ 11111111iffill i 668 14102 7 mill 1 36 187