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• The elevated boardwalk bark-on Tamarack support posts or timbers shall be 8'- <br /> 10' On Center (O.C.) if not a part of the 10 platforms or 12' bridge. Each timber <br /> shall be round and a minimum of 10" inches in diameter and relatively uniform <br /> above ground. Each shall be buried a minimum of 2' feet, and backfilled with <br /> clean sand, sewer rock, or pea gravel, the latter of which that may be obtained <br /> at no cost at the City's Public Works facility. Everywhere necessary to protect <br /> tree roots greater than 4" in diameter, a basic box construction base may be <br /> utilized in lieu of a bury to attach posts and support raised platform to ensure <br /> adequate length of post above platform for railing or event attachment. <br /> • Random width full dimensional rough sawn (R.S.) live edge Tamarack lumber <br /> 1" thick with all cut edges eased and all corners radius minimum of 2" shall be <br /> placed vertically for the elevated boardwalk sides or walls. These sidewalls are <br /> required on both sides (as depicted above) in continuous manner, when the <br /> boardwalk is 30"or higher above resilient surfacing. The live edge Tamarack <br /> shall have a spacing of 3" inches between each board. Exposed ends of boards <br /> sanded smooth with 60 grit sandpaper. <br /> • Exposed structural railing components shall be full dimensional 2"x4" or 2N6" <br /> R.S. Tamarack also with exposed sides and edges sanded smooth with 60 grit <br /> paper. <br /> • Platform, walkway and bridge frames shall be constructed of Brown Treated <br /> 2X lumber of sufficient dimension to span required distances and in no case <br /> less than 2x6. Cross-bracing as required between tamarack logs shall also be <br /> Brown Treated 2X lumber not less than 2x6. All hardware coming into contact <br /> with treated materials must be coated or stainless-steel including lag bolts, <br /> deck screws and other connectors. Photos within this RFP shall inform design <br /> and clarify specifications as needed. <br /> For purposes of elevated boardwalk and platform acceptance at the <br /> completion of the project, the acceptance standard shall be that the City and <br /> Contractor shall walk the boardwalk and find that there is NO perceptible <br /> movement latterly or vertically, nor significant sounds of movement. <br /> 7 1 q '; �„ <br />