Attachment 3 SOW Appendix A.2 - Concept Drawings Crooked Island Boardwalk.pdf

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Repair Base Boardwalks
Solicitation number
FA481920R0021
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This package includes concept drawings and specifications for the repair of the Crooked Island Boardwalk at Tyndall Air Force Base in Florida. The project involves replacing approximately 750 linear feet of boardwalk that was damaged by Hurricane Michael in 2018. Key details include precast concrete decking supported by pressure treated wood framing, integrated benches, and railings meeting ABA/ADA accessibility standards. The project is located along Highway 98 and will restore pedestrian access to Crooked Island Beach. Construction is to follow conservation measures for dune protection and comply with conditions to avoid impacts to sea turtles and smalltooth sawfish. The related federal contract opportunity is a competitive small business set-aside soliciting proposals by August 31, 2020 for repair of base boardwalks at Tyndall AFB per the specifications provided.

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Text version

.2

CONCEPT

CROOKED ISLAND BOARDWALK

9 8114

BASE BOAREWALKS

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REPAIR CROOKED ISLAND BEACH BOARDWALK

PROJECT No. XLWU 19-8114

PROJECT LOCATION

HWY 98

PROJECT LOCATION

GULF OF MEXICO

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DRAWING INDEX

SHEET DESCRIPTION OF SHEET

T1 COVERSHEET

T2 DEMOLITION PLAN

T3 CONCEPT PLAN

T4 CONCEPT DETAILS

T5 CONCEPT DETAILS

CONCEPT ONLY - NOT FOR CONSTRUCTION

PROJECT NARRATIVE

1. CROOKED ISLAND BOARDWALK WAS SEVERELY DAMAGED BY HURRICANE MICHAEL IN OCTOBER OF 2018. THE STORM CONSISTED OF WINDS IN EXCESS OF 155 MPH AND A SURGE THAT ROSE UP TO 12 FT IN THE AREA OF THE BOARDWALK. APPROXIMATELY 10% OF THE STRUCTURE REMAINS ON SITE AT THIS TIME. SMALL SECTIONS ARE STILL IN THE ORIGINAL LOCATION, SELECT PORTIONS EXIST ON SITE AS DEBRIS WITHIN 100 FT OF THE ORIGINAL LOCATION AND THE REST WAS WASHED AWAY AND NEVER FOUND. ACCESS IS ACQUIRED THROUGH CROOKED ISLAND ROAD WHICH ALSO SUSTAINED SIGNIFICANT DAMAGE. 4 WHEEL DRIVE VEHICLES WILL BE

REQUIRED FOR ACCESSING THE SITE.

2.THE INTENT OF THIS PROJECT IS TO DESIGN AND BUILD A RESILIENT BOARDWALK FACILITY BASED ON THE CONCEPT DRAWINGS THAT WILL BE LOW-MAINTENANCE AND MORE STORM RESISTANT. THE CONCEPT IS TO UTILIZE A DURABLE WOOD FRAME AND PRECAST CONCRETE PANEL DECK. FEATURES WILL INCLUDE ABA/ADA ACCESSIBILITY, UPDATED RAILING AND CORROSION RESISTANT FASTENERS. THE BOARDWALK WILL INCLUDE INTEGRATED BENCHES WITH TREX SURFACES AT THE SOUTH END BEACH ACCESS AND THE PHONE STATION WILL BE REPLACED.. THE NEW STRUCTURE WILL BE PLACED IN A SIMILAR FOOTPRINT TO THE ORIGINAL

STRUCTURE.

CROOKED

ISLAND SOUND

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CONCEPT ONLY - NOT FOR CONSTRUCTION

BOARDWALK DEMOLITION NOTES:

1. IMAGE SHOWS POST STORM CONDTIONS OF BOARDWALK

2. BOARDWALK IS APPROXIMATELY 420 LF / 2,500 SF

3. APPROXIMATELY 80% OF BOARDWALK WAS REMOVED BY THE HURRICANE

4. ALL REMAINING BOARDWALK COMPONENTS SHALL BE REMOVED AND

DISPOSED OF

5. BOARDWALK REMNANTS WITHIN 100 FT OF PATH SHALL BE REMOVED AND

DISPOSED OF

NOTES

1. DUNE WALKOVER SHALL MEET THE U.S. FISH AND WILDLIFE SERVICE CONSERVATION

MEASURES FOR DUNE WALKOVER CONSTRUCTION.

2. DESIGN SHALL MEET ABA/ADA REQUIREMENTS AS APPLICABLE

3. STRUCTURES SHALL BE INSTALLED IN A SIMILAR FOOT PRINT TO THE PRIOR

STRUCTURES.

4. FINAL DESIGN TO BE COMPLETED BY DESIGNER OF RECORD.

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CONCEPT ONLY - NOT FOR CONSTRUCTION

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BOARDWALK NOTES:

CONSTRUCT NEW BOARD WALK AND RAMPS (APPROXIMATELY 750 LF /

5,250 SF) SIMILAR TO IMAGES ABOVE. CONCEPT DETAILS ARE PROVIDED IN

THE FOLLOWING PAGES.

1. DUNE WALKOVER TO BE CONSTRUCTED 3 FT ABOVE GRADE

2. BOARDWALK WIDTH SHALL BE +7'-4"

3. INCLUDE (4) INTEGRATED BENCHES AT SOUTH END NEAR RAMP

4. DECK SHALL BE PRECAST CONCRETE PANEL

5. SIDE RAILING SHALL BE PROVIDED ALONG ENTIRE LENGTH

6. ALUMINUM HAD RAIL SHALL BE PROVIDED AT RAMP SECTIONS WHERE

REQUIRED

7. FINAL LOCATION OF THE BOARDWALK EXTENSION TO BE DETERMINED

BY THE DESIGNER OF RECORD. LOCATION SHOWN IS APPROXIMATE.

BOARDWALK ENTRY FILL:

1. IMAGE SHOWS POST STORM CONDITIONS OF BOARDWALK AT PARKING LOT

2. INSTALL APPROXIMATELY 40 CY OF WHITE BEACH SAND FILL TO RESTORE

GRADE AT THE WASHOUT LOCATED AT THE BEGINNING OF THE BOARDWALK.

3. INSTALL APPROXIMATELY 40 CY OF GRAVEL (SIMILAR TO EXISTING) IN THE

PARKING LOT TO RESTORE SURFACE AT THE BOARDWALK

4. INSTALL NEW PONE STATION HARDWARE

STA 7+50

STA 6+40

PHONE STATION (WASHED AWAY)

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CONCEPT ONLY - NOT FOR CONSTRUCTION

BOARDWALK AND PAVILION NOTES

1. CONCEPT PLANS AND DETAILS ARE CONCEPT ONLY - FINAL DESIGN TO BE PROVIDED BY THE

AWARDED DESIGN BUILD CONTRACTOR.

2. MEASUREMENTS AND AREAS PROVIDED IN THE CONCEPT PLANS ARE APPROXIMATE - CONTRACTOR

SHALL VERIFY ALL SITE CONDITIONS PRIOR TO BIDDING.

3. STRUCTURES AND PRECAST CONCRETE PANELS TO BE DESIGNED AND DETAILED BY A REGISTERED

PROFESSIONAL ENGINEER/ARCHITECT.

4. CONTRACTOR TO SET AND SECURE MATERIALS AND COMPONENTS IN PLACE, PLUM AND LEVEL

AND/OR TO THE GRADES SPECIFIED IN THE APPROVED DESIGN DOCUMENTS.

5. ALL MATERIALS SHALL BE NEW UNLESS SPECIFICALLY NOTED OTHERWISE.

6. BENCHES SHALL BE INTEGRATED INTO THE STRUCTURE FRAMING - SEATS AND BACKS SHALL BE

COMPOSITE TREX OR EQUAL. (4) BENCHES WILL BE INCLUDED AT SOUTH END BEACH ACCESS.

7. STRUCTURES SHALL BE DESIGNED AND CONSTRUCTED MEET ABA/ADA REQUIREMENTS.

8. DUNE WALKOVER SHALL MEET THE U.S. FISH AND WILDLIFE SERVICE CONSERVATION MEASURES

FOR DUNE WALKOVER CONSTRUCTION.

9. STRUCTURES SHALL BE INSTALLED IN A SIMILAR FOOT PRINT TO THE PRIOR STRUCTURES.

10. ALL WORK SHALL MEET THE PROFESSIONAL LEVEL OF QUALITY FOR EACH TRADE UTILIZED.

11. DECK SURFACE GAPS SHALL NOT EXCEED 12" UNLESS NOTED OTHERWISE.

12. ALL STEEL AND HARDWARE, INCLUDING BOLTS, WASHERS AND NUTS SHALL BE HOT-DIP GALVANIZED

OR 316 STAINLESS STEEL AS SPECIFIED BY THE DESIGNER OF RECORD.

13. ALL SCREWS SHALL BE 316 STAINLESS STEEL.

14. FASTENERS SHALL BE SELECTED AT APPROPRIATE LENGTHS FOR THE APPLICATION; BOLT

EXTENSION BEYOND NUT- MIN 3 THREADS / MAX 3 INCHES; SCREWS - SHALL NOT PENETRATE

OPPOSING SIDE.

15. SENSITIVE DUNE STRUCTURES AND VEGETATION DISTURBANCE SHALL BE MINIMIZED TO THE

GREATEST EXTENT PRACTICABLE DURING CONSTRUCTION PERFORMANCE.

16. AREAS DISTURBED BY CONSTRUCTION ACTIVITY SHALL BE RESTORED IN ACCORDANCE WITH

INDUSTRY STANDARDS.

PRESSURE TREATED LUMBER AND TIMBERS

1. ALL LUMBER AND TIMBERS SHALL BE SOUTHERN YELLOW PINE (SYP) OR BETTER AND PRESSURE TREATED AND PRESERVED WIT EITHER COPPER CHROMATED ARSENIC (CCA) OR ALKILIN COPPER

QUATERNARY (ACQ) PRESERVATIVES CONFORMING WITH CURRENT FEDERAL REGULATIONS.

2. ALL PRESSURE TREATED LUMBER AND TIMBERS SHALL BE ACCREDITED BY THE AMERICAN LUMBER

STANDARD COMMITTEE (ALSC) AND SHALL CONFORM TO THE STANDARDS OF AMERICAN WOOD

PRESERVERS ASSOCIATION (AWPA).

3. THE FOLLOWING WOOD COMPONENTS OF THE PROJECT ARE TO BE PRESSURE TREATED AS

FOLLOWS:

AWPA USE

COMPONENT APPLICATION CATEGORY PCF

PILES FOUNDATION 4C 0.80

GIRDERS FOUNDATION 4B 0.40

EDGING BEAM GROUND CONTACT 4A 0.40

VERT RAIL SUPPORT ABOVE GRADE 3B 0.40

RAILING ABOVE GRADE 4B 0.20

RAILING ABOVE GRADE 4B 0.20

1 BOARDWALK ELEVATION

SCALE: 14" = 1'-0"

8'-0" (ONE SPAN)8'-0" (ONE SPAN)

FLATSLOPED

24'-0" (THREE SPANS)

SLOPE TO LANDINGS

LANDINGDECKING/FRAMING BELOW OR PARTIALLY

BELOW GRADE

8'-0" (ONE SPAN)

FLAT

GRADE LEVEL

(4) #8 X4" SS SCREWS

EACH RAILING JOINT

(TYP)

(2) #8 X4" SS SCREWS

EACH INTERMEDIATE

SUPPORT (TYP)

4X10 GIRDERS BEVELED

TO MATCH SLOPE (TYP)

PRECAST CONCRET

PANEL (TYP)

2"X4" LAG BOLT & WASHER AT

PILINGS AND INTERMEDIATE

VERTICAL SUPPORTS ALONGTOP

RAILING MEMBER (TYP)

8" SQUARE TIMBER

PILE (TYP)

BEACH ACCESS

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CONCEPT ONLY - NOT FOR CONSTRUCTION

2 LONGITUDINAL SECTION - BOARDWALK & RAILING

SCALE: 14" = 1'-0"

4x6 RAILING SUPPORT

2x6 RAILING

MEMBERS

(4 EACH)

2x4 TOP RAIL

4x10 GIRDER

(TYP)

8" SQUARE

PILING TYP

4" PRECAST

CONCRETE PANEL

3'- 6"

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5'- 0"

3 PLAN AT TOP OF GIRDERS

SCALE: 14" = 1'-0"

4x10 GIRDER

8" SQUARE

PILING TYP

8'-0"

TYPICAL SPAN

8'-0"

TYPICAL SPAN

6'- 0"

7'- 4"

8" 8"

4 PLAN AT TOP OF PRECAST CONCRETE PANELS

SCALE: 14" = 1'-0"

8" HDG CARRIAGE BOLT

WASHER & NUT (TYP)

4X6 EDGING BEAM (TYP)4X6 RAILING SUPPORT (TYP)

4'-0" (TYP) 4'-0" (TYP)

8" SQUARE

PILING TYP

6 BOARDWALK & HAND RAILING

SCALE: 14" = 1'-0"

(4) #8 X4" SS SCREWS EACH

RAILING JOINT (TYP)

5 BOARDWALK & HAND RAILING

SCALE: 14" = 1'-0"

3'- 6"

ALUMINUM HAND RAIL

SCREWS CONTERSUNK

8X8 PILING W/ 3 12"

CHAMFER (TYP)

4X6 INT. RAILING SUPPORT

W/ 2 12" CHAMFER (TYP)

4X6 PANEL EDGING BEAM

(SHIM WITH TREX FASCIA

BOARD AS REQUIRED)

(2) 12"X8" LAG BOLTS &

WASHERS AT BASE OF

INT. RAILING SUPPORT

8" HDG CARRIAGE BOLT,

N.Y. WASHER & NUT (TYP)

(4) #8 X4" SS SCREWS

EACH RAILING JOINT

(TYP)

(2) #8 X4" SS SCREWS

EACH INTERMEDIATE SUPPORT

(TYP)

2"X4" LAG BOLT & WASHER AT

PILINGS AND INTERMEDIATE

VERTICAL SUPPORTS (TYP)

8" HDG CARRIAGE BOLT,

OGEE WASHER & NUT (TYP)

4x10 GIRDER

(4) 2X6 RAIL

2X4 TOP RAIL

2x4 RAILING

4" THICK PRECAST

CONCRETE PANEL

WITH 38" SLOTS

7 INTEGRATED BENCH

SCALE: 14" = 1'-0"

8X8 PILING (TYP)

8" HDG CARRIAGE BOLT,

WASHER & NUT (TYP)

1X6 TREX COMPOSITE

BACKING OR EQUAL (TYP)

1X6 TREX COMPOSITE

SEAT OR EQUAL (TYP)

2X6 TOP (TYP)

2X6 SIDE BRACE (TYP)

2X6 RAIL

BEYOND

2X4 TOP RAIL

2X6 LOWER

BENCH FACING

4X6 PANEL

EDGING BEAM

2X6 SEAT FRAME (TYP)

PRECAST

CONCRETE

PANEL

2X12 CUT SEAT

FRAME (TYP)

8 INTEGRATED BENCH

SCALE: 14" = 1'-0"

VERTICAL NOTCHS FOR

FASTENERS

2X12 CUT SEAT

FRAME (TYP)

15°

5°

15°

* INTEGRATED BENCHES; (4) AT SOUTH END BEACH ACCESS, (4) AT

PHONE STATION #1, (4) AT PHONE STATION #2

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Conservation Measures for Dune Walkover Construction September 2015

1. Walkovers/Boardwalks. Dune walkovers shall be constructed at a height (minimum three feet above grade – higher if habitat has been impacted from storms) to accommodate natural dune growth and associated vegetation.

2. Equipment storage. No storage of equipment or materials shall occur on the beach or dunes throughout the entire year.

3. Construction. A top down construction method should be utilized. This would limit human and mechanical impacts to the dunes by allowing the new construction to progress outward from the previous construction.

4. Sea turtle nesting. No walkover/boardwalk construction shall occur on the beach during the sea turtle nesting season from May 1 through November 1.

5. Sand fence. Minimal use of sand fence is encouraged. When used, the fence must be used for restoration of dune blowouts. Post and rope is preferred for beach visitor access, pedestrian traffic control, and wildlife exclusion zones (i.e., bird wintering areas). If used for dune restoration, the fence shall be placed in a sea turtle compatible design and be made of biodegradable material.

6. Dune protection. No activity, except as needed to repair the walkover/boardwalk, shall occur on existing healthy dunes during any time of the year. Limit activities within this area to maintenance and restoration of the habitat. Use appropriate signs to designate and indicate the purpose of the conservation area, if necessary.

7. Restoration. If dune restoration is needed for the dune walkover construction project, contact the USFWS Panama City Field Office for further assistance.

8. Refuse. Install and maintain sturdy animal-proof garbage containers to prevent the invasion of house mice, non-native rats and predators (cats, raccoons, fox, coyotes).

9. Lighting. No lighting shall be utilized on the dune walkover.

U.S. Fish and Wildlife Service 1601 Balboa Avenue Panama City, Florida 32405

(850) 769-0552 http://www.fws.gov/panamacity/

UNITED STATES DEPARTMENT OF COMMERCE

National Oceanic and Atmospheric Administration

NATIONAL MARINE FISHERIES SERVICE

Southeast Regional Office 263 13th Avenue South St. Petersburg, FL 33701

SEA TURTLE AND SMALLTOOTH SAWFISH CONSTRUCTION CONDITIONS

The permittee shall comply with the following protected species construction conditions:

a. The permittee shall instruct all personnel associated with the project of the potential presence of these species and the need to avoid collisions with sea turtles and smalltooth sawfish. All construction personnel are responsible for observing water-related activities for the presence of these species.

b. The permittee shall advise all construction personnel that there are civil and criminal penalties for harming, harassing, or killing sea turtles or smalltooth sawfish, which are protected under the Endangered Species Act of 1973.

c. Siltation barriers shall be made of material in which a sea turtle or smalltooth sawfish cannot become entangled, be properly secured, and be regularly monitored to avoid protected species entrapment. Barriers may not block sea turtle or smalltooth sawfish entry to or exit from designated critical habitat without prior agreement from the National Marine Fisheries Service’s Protected Resources Division, St. Petersburg, Florida.

d. All vessels associated with the construction project shall operate at “no wake/idle” speeds at all times while in the construction area and while in water depths where the draft of the vessel provides less than a four-foot clearance from the bottom. All vessels will preferentially follow deep-water routes (e.g., marked channels) whenever possible.

e. If a sea turtle or smalltooth sawfish is seen within 100 yards of the active daily construction/dredging operation or vessel movement, all appropriate precautions shall be implemented to ensure its protection. These precautions shall include cessation of operation of any moving equipment closer than 50 feet of a sea turtle or smalltooth sawfish. Operation of any mechanical construction equipment shall cease immediately if a sea turtle or smalltooth sawfish is seen within a 50-ft radius of the equipment. Activities may not resume until the protected species has departed the project area of its own volition.

f. Any collision with and/or injury to a sea turtle or smalltooth sawfish shall be reported immediately to the National Marine Fisheries Service’s Protected Resources Division (727-824- 5312) and the local authorized sea turtle stranding/rescue organization.

g. Any special construction conditions, required of your specific project, outside these general conditions, if applicable, will be addressed in the primary consultation.

Revised: March 23, 2006 O:\forms\Sea Turtle and Smalltooth Sawfish Construction Conditions.doc

File details come from the government source that posted it. Updated .