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SECTION 07720 KeeHatch® RAILING SYSTEM, OSHA COMPLIANT (Last revised 6/06/01) PART 1 - GENERAL 1.01 SUMMARY Provide and install permanent bolt-on KeeHatch Railing System(s) for safe egress and ingress through roof type access hatches and for protection of roof opening(s) while roof hatch is in use. The KeeHatch Railing System meets OSHA Standards 29 CFR 1910.23 and 29 CFR 1910.27. 1.02 WORK INCLUDED Include all labor, materials, equipment, transportation and services required to complete the installation of the roof accessories as shown on the drawings and/or herein specified. 1.03 SUBMITTALS Submit manufacturer's catalog cuts for approval prior to order. 1.04 WARRANTY Provide the General Contractor with a seven (7) year manufacturer's warranty. Installer must hold valid "Certified Installer" certificate. PART 2 - MATERIALS 2.01 DISTRIBUTOR KeeHatch Railing System 2.02 KeeHatch Railing System A. Furnish and install KeeHatch Railing System on all roof hatches, matching proper model with specified roof hatch. Contact distributor for proper model selection, if necessary. B. Performance Characteristics: 1. Railing System shall be designed to withstand a 200 pounds test load. 2. Railing System shall consist of a top rail, mid rail, and chain or swinging gate, with the hatch curb acting as the toe plate. 3. Railing system shall extend to a height of at least 42" from the finished roof deck. 4. Railing system shall be free of sharp edges and snag points. 5. Sealant for brackets as per manufacturer's materials and methods recommendations. 6. Product label shall include easy reading no hoisting warning along with manufacturer's identification and patent label. C. Railing and Brackets: 1. Pipe shall be 1 1/4'' Nominal Bore; A53 Grade B seamed steel or galvanized, 1 5/8" OD A500 seamed tube. 2. Flat bar shall be 2" x 3/8" thickness A36 mild steel or comparable cast fitting. 3. Weld filler shall be metal NR211 E70XX (AWS) if required. D. Hardware: 1. Railing fittings shall be Kee Klamp® fitting numbers 10-7, 15-7, 26-7, 45-7, 76-7, 77-7, 78-7, 121-7, 162-7, 161-7 as they apply. 2. Chain system shall be 3/16" proof coil ASTM specification, zinc plated with quick link on fixed end. 3. Pipe ends and tops shall be covered or plugged with weather and light resistant material. 4. Bolts and washers shall be 3/8" x 2 1/2" grade Z, zinc plated. E. Finish: Factory finish shall be galvanized (hot dipped). PART 3 - EXECUTION 3.01 INSTALLATION Individuals holding a valid and current Certificate of Installation shall install KeeHatch Railing Systems. END OF SECTION |
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