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SECTION 32 3400 - SUSPENSION PEDESTRIAN BRIDGEPART 1 GENERAL1.1 SECTION INCLUDES

A. This section contains the requirements for a fully engineered suspended pedestrian bridgeincluding the bridge approach on each end and shall be the minimum standards for design andconstruction.

1.2 REFERENCE STANDARDSA. USDA Forest Service Design Aids.B. AISC 360 - Specification for Structural Steel Buildings; 2010.C. American Challenge Course Technology (ACCT) - ANSI/ACCT 03-2019 Challenge Course and

Canopy/Zip Line Tour Standard.D. American Wood Preservers' Association (AWPA): P5, Standard for Waterborne Preservatives;

2015.E. ASTM A36/A36M - Standard Specification for Carbon Structural Steel; 2014.F. ASTM A123/A123M - Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and

Steel Products; 2015.G. ASTM A153/A153M - Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel

Hardware; 2009.H. ASTM A307 - Standard Specification for Carbon Steel Bolts, Studs, and Threaded Rod 60 000 PSI

Tensile Strength; 2014.I. ASTM A392 - Standard Specification for Zinc-Coated Steel Chain-Link Fence Fabric; 2011.J. ASTM A1023/A1023M - Standard Specification for Stranded Carbon Steel Wire Ropes for

General Purposes; 2015.K. ASTM C150/C150M - Standard Specification for Portland Cement; 2016.L. ASTM F668 - Standard Specification for Polyvinyl Chloride (PVC) and Other Organic Polymer-

Coated Steel Chain-Link Fence Fabric; 2011.M. ASTM F934 - Standard Specification for Standard Colors for Polymer-Coated Chain Link Fence

Materials; 2013.N. AWS D1.1/D1.1M - Structural Welding Code - Steel; 2015.O. Federal Specification RR-W-410G - Wire Rope and Strand.

1.3 ADMINISTRATIVE REQUIREMENTSA. Preinstallation Meeting: Convene one week before starting construction work of this section.

1.4 SUBMITTALSA. Calculations: Structural analysis results and calculations shall be prepared and sealed by a

Professional Engineer licensed in the Commonwealth of Kentucky. All analysis and resultsnecessary to determine the structural adequacy of the bridge shall be shown. Calculations shallinclude bridge reactions, anchor forces, cable forces for all unfactored loads.

B. Qualifications of engineer: Bridge engineer shall be licensed structural engineer in Kentuckyhaving designed a minimum of six (6) suspension pedestrian bridges in the United States ofAmerica (USA) with a minimum length of 150’ feet. Bridge structural engineer shall providequalifications meeting the above in response to proposal.

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C. Qualifications Bridge Contractor: Contractor shall have a minimum of ten (10) years buildingcable suspension pedestrian bridges with over six (6) completed bridges in the last six (6) years.With a minimum length of 300’.

D. Shop Drawings: Submittal drawings shall be unique drawings to project and prepared toillustrate the specific portion of the bridge being constructed. All relative design informationsuch as member size, locations of structural members, loads, material specification, dimensions,connections, general construction details, anchorages and method of anchorage includingconcrete reinforcement, and required critical welds shall be clearly shown on the drawings. Alldrawings shall be sealed by a Professional Structural Engineer licensed in the Commonwealth ofKentucky.

E. Product Data: For each type of bridge system component. Include construction details, materialdescriptions, dimensions of individual components and profiles and finishes for the following:1. Wire rope cables2. Safety netting3. Pressure treated lumber4. Anchors, Dead men anchors shall be engineered and sealed by registered engineer with

tested capacity of 2 times the working load limit.5. Fasteners

F. Maintenance Instructions: Submit instructions for maintaining the suspended bridge and allbridge components including but not limited to wire rope cabling, pressure treated decking andsafety netting. Include in the maintenance instructions the recommended interval of inspectionof the suspended bridge and components.

1.5 BRIDGE DESIGNA. Bridge and the approaches shall conform in general appearance, shape, design, dimensions and

layout to this specification and the design and layout indicated on the drawings. The finaldesign and layout shall be the responsibility of the bridge manufacturer and their designengineer and shall conform to these documents and verified field conditions.

B. Bridge Designer/Contractor shall provide concept plan sections of the proposal bridgeindicating:1. Length and profile (maximum sag angle of 10 degrees)2. Cross section of bridge with width dimensions.3. Materials (decking and railing), cables (approximately size and amount).

C. Bridge shall be designed for a local live load of 90 PSF (local decking and connections), with amaximum global load of (180), 200 pound persons (36,000 pounds).

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1.6 DESIGN CRITERIAA. Dead Load: Sum of all self-weight of bridge materials. Estimated at 10 psf as determined by

bridge engineer.B. Snow Load: Uniform 20 PSF load on deck surface. Local decking and connections shall be

designed for a local live load of 90 PSF. Dynamic load allowance in not required with thisloading. Bridge will have a maximum global load rated capacity for 180 persons at 200 lbs perperson (36,000 pounds) in addition to applicable dead loads. Snow loads shall meet bothIBC-15 and ASCE 7-10.

C. Vehicular Load: Vehicles not permitted on bridge.D. Equestrian Load: Equestrian animals not permitted on bridge.E. Wind Load: As specified in IBC-15 and ASCE 7-10.F. A factor of safety of 5 to 1 shall be provided in the bridge design for rope cable and hardware

as specified in ANSI/ASME B30.26, 30-15, 19.PART 2 PRODUCTS2.1 MANUFACTURERS

A. American Adventure Park Systems: www.americanadventurepark.comB. Surespan: www.surespan.com

2.2 SUSPENDED BRIDGE DESCRIPTIONA. Wire rope suspended bridge with lower wire ropes supporting majority of the gravity load.

1. Span: No less 800 feet across the Russell Fork River as indicated on Drawings.2. Width: Bridge shall be four (4) to five (5) feet clear at the deck surface.3. Sag: Maximum design sag 9% of span length.4. Elevation: Bottom elevation of bridge shall be no lower than 935. West side landing

elevation estimated at 990-992. East side landing estimated elevation at 960-965. 2.3 MATERIALS

A. Cables: Galvanized wire rope with independent wire rope core meeting the requirements of FEDSpec RR-W-410G, Type 1, Class 2 and ASTM A1023.

B. Cross Beams: Steel angles conforming to ATSM A36 with hot-dip galvanized finish inaccordance with ASTM A123.

C. Deck Boards: Pressure-treated lumber injected with Ammoniacal Copper Quaternary Compound(ACQ) conforming to AWPA P5.1. Size: 2x6 minimum, southern yellow pine, premium (#1) grade.2. Lumber shall not be incised.3. Deck boards shall be installed transverse to bridge span and with heartwood up and bark

side down.D. Contractor shall provide an additional cost for Aluminum non-slip paneling option in place of

perssure-treated lumber decking boards.E. Safety Netting: Galvanized steel chain link fabric conforming to ASTM A392/Aluminum chain

link option minimum 4' high.1. Polymer Coated Steel Fabric: 2-inch mesh, 9 gauge, 3.5 feet high with coating per ASTM

F668.

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2. Color: Black in compliance with ASTM F934.F. Heavy Timber Support Posts: Creosote treaded timber utility poles of length as required. Timber

shall be southern yellow pine. Butt diameter shall be 9 inches minimum. Support posts forsuspended bridge support and bridge approach support.

G. Deadman: Reinforced concrete with a 28-day compressive strength of 4,000 psi.1. Concrete: Ready-mix concrete in accordance with ACI 301. Portland Cement, Type I or II,

conforming to ASTM C150.2. Reinforcement: Deformed bars conforming to ASTM A615, Grade 60. Fabrication and

placement shall conform to ACI Manual of Standard Practice for Detailing ReinforcedConcrete Structures (ACI SP-66, latest edition)

H. Anchors: Anchors cast into concrete deadman shall be hot-dip galvanized. Open ended hookare not permitted.

I. Clips and Clamps: Wire rope clips and clamps shall be drop-forged and hot-dip galvanized.2.4 ACCESSORY COMPONENTS

A. Bridge Approach: Provide bridge approach on each end of suspended bridge. Approach shallbe constructed using heavy timber pole supports and pressure treated lumber.

B. Fasteners: Provide hot-dipped, zinc-coated galvanized fasteners, including washers and nuts inaccordance with ASTM A153. G-185 minimum coating.

C. Entrance points at each end of the bridge shall include means to prevent public access duringtimes of brdige closure to restrict access. This may be provided by appropriate locable gates.

PART 3 EXECUTION3.1 EXAMINATION

A. Verify bridge materials are of material, grade and quality specified before commencing witherection. Store bridge construction materials on pallets or wood blocking keeping materialsfrom coming in contact with the ground until materials are installed.

3.2 PREPARATIONA. Provide temporary shores, guys, braces and other supports during erection to keep structural

framing secure, plumb, and in alignment against temporary construction loads and loads equalin intensity to design loads. Remove temporary supports when permanent structural framing,connections, and bracing are in place.

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3.3 ERECTIONA. Erect suspended bridge in accordance with bridge design drawings and written erection

instructions and erection drawings.B. Erect framing in accordance with AASHTO Guide Specifications for the Design of Pedestrian

Bridges and ACCT Challenge Course and Canopy/Zip Line Tour Standard.3.4 CLEANING AND PROTECTION

A. Apply lubrication to wire rope upon completion of bridge construction – utilizing dry lube wire.B. Apply wood sealer to all wood lumber upon completion of bridge construction. Sealer need not

be applied to heavy timber support posts – (Sealer / Stain) applied after a reasonable andagreed upon amount of time.

3.5 MAINTENANCEA. Submit maintenance instructions for bridge components including interval of recommended

maintenance.

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