A06_Technical_Specifications.pdf

US FISH & WILDLIFE SERVICE

FINLEY NATIONAL WILDLIFE REFUGE

WOODPECKER LOOP TRAIL AND

BOARDWALK PROJECT

CONTRACTOR DESIGNED PEDESTRIAN BRIDGE

CONTRACTOR- DESIGNED STRUCTURAL FIBER REINFORCED PLASTIC / POLYMER

PEDESTRIAN BRIDGES

PART 1 GENERAL REQUIREMENTS

1.1 Description: This section includes the design, fabrication and supply of the pre-manufactured, structural reinforced plastic pedestrian bridge(s) as shown and described on the contract drawings. The (2) bridges are to be of structural fiber reinforced plastic / polymer construction with a slip-resistant and ADA compliant fiberglass deck, and the supplier shall furnish all materials including connecting steel and hardware for a complete installation.

1.2 Design Criteria:

A. AASHTO Guide Specifications for the Design of Pedestrian Bridges, December 2009 with 2015 Interim Revisions

B. See Contract Plans for additional loading requirements.

C. See Contract Plans for rail requirements.

1.3 Qualifications:

A. The bridge supplier must be a company specializing in the design and fabrication of structural fiber reinforced plastic / polymer bridges, with a minimum of five (5) years documented experience.

1.4 Submittals:

A. Product Data: For each type of product.

B. Shop Drawings. Shop drawings shall include: general layout of structure, footing plan, elevation and cross section, and fabrication details for all structural reinforced plastic members and steel assemblies. Include all pertinent dimensions, plastic grades, drilled holes, fasteners, cambers, connectors, and types of preservative treatment where applied.

Shop drawings to be stamped by a registered structural engineer, licensed to practice in Oregon.

C. Submit design calculations stamped by a registered structural engineer licensed to practice in Oregon.

D. Furnish an Certificate of Conformance stating that the structural fiber reinforced plastic / polymers conform to the specifications.

E. Furnish a Certificate of Conformance for all structural fiber reinforced plastic / polymers.

WOODPECKER LOOP TRAIL AND

BOARDWALK PROJECT

CONTRACTOR DESIGNED PEDESTRIAN BRIDGE

F. Provide a written warranty against defects in material and workmanship for a period of five (5) years.

PART 2 PRODUCTS

2.1 Materials:

A. Structural Fiber Reinforced Plastic / Polymer Grades as required by the design. The appearance shall be Industrial, except handrails and rail posts to be Architectural.

Adhesive shall be 100% waterproof phenolic resin glue.

B. Steel and hardware. Manufacturer to supply all necessary steel and hardware required to assemble the bridge. Steel to be Stainless Steel SS-304 and hardware to be Stainless Steel SS-304. Welding by certified welders per AWS specifications D1.5.

C. Decking shall be slip resistant and ADA compliant fiberglass grating to match the product used on the boardwalk structures. Ends of decking materials must be sealed.

Reference the structural general notes for the decking product requirements.

2.2 Fabrication:

A. All structural fiber reinforced plastic / polymer to be fully fabricated. Factory drill all holes to the extent possible.

PART 3 EXECUTION

3.1 Delivery, storage, and handling:

A. The purchaser or installer is responsible for handling and protection of bridge members after arrival at destination. All bridge materials shall be unloaded and handled with a forklift or crane using nylon slings.

B. If bridge materials are to be stored at the site, they must be placed on a level surface and stickered to prevent warpage and twisting.

C. Any damage must be reported immediately to the bridge supplier’s engineering department.

3.2 Installation (Please note, Installation is not part of the Design, Manufacture, Haul, Deliver, and Unload Contract):

A. Install the structural fiber reinforced plastic / polymer bridge according to manufacturer’s shop details and installation drawings. Set structural members in locations and to

WOODPECKER LOOP TRAIL AND

BOARDWALK PROJECT

CONTRACTOR DESIGNED PEDESTRIAN BRIDGE

elevations indicated. Make provisions for erection loads and provide temporary bracing to maintain bridge true and plumb, and in true alignment until completion of erection.

B. Do not field cut, drill, or alter structural members without written approval from the structural fiber reinforced plastic / polymer bridge company’s professional engineer.