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THE CITY OF SUNNY ISLES BEACH <br />PROJECT NO. 21-1011 <br />BUILDING DEPARTMENT RELOCATION TO ANNEX <br /> <br />Project No. 21-1011 November 2024 055100 Fixed Metal Ladders-3 <br />diameter, connected to 2-7/8-inch (73 mm) side rail channels with cast aluminum rung <br />connectors, each secured to rails by means of four solid aircraft rivets. <br /> <br />1. Walk-Through and Parapet Railings: Aluminum extrusions; extend not less than <br />42 inches (1,067 mm) above landing, 24 in (610 mm) between side rails at step <br />through. <br /> <br />2. Cage: Aluminum hoops 1/4 by 2 inches (6 by 51 mm) and seven aluminum <br />vertical bars 3/16 by 1-1/2 inches (5 by 38 mm) riveted rigidly together. <br /> <br />3. Rest Platforms: Aluminum Grip Strut grating and aluminum toe boards 0.63 in <br />(1.6 mm) thick by 4 inches (102 mm) wide; railings of 1-1/4-inch (32 mm) round <br />serrated tube with cast aluminum railing fittings. <br /> <br />4. Security Doors: Form from aluminum sheet 0.188 inch (4.8 mm) in thickness; <br />secure with stainless steel piano hinges and hasps. <br /> <br />5. Hatch Access: Provide ladder side rail with rubber end caps and end with <br />sufficient clearance for hatch to properly close. <br />C. Ship's Ladders: 24 inches (610 mm) wide. <br /> <br />1. Capacity: 500 lbs. (225 kg). <br /> <br />a. Slope: 60 degrees; 6-inch (152 mm) wide aluminum steps mounted on <br />10-13/32 inches (264 mm) centers to 5-1/4-inch (133 mm) aluminum <br />side rails. <br /> <br />b. Slope: 70 degrees; <br /> <br />1) For Ladders Less Than 10 Feet: 3-inch (76 mm) wide aluminum <br />steps mounted on 12-inch (305 mm) centers to 2-7/8-inch (73 <br />mm) aluminum side rails. <br />2) For Ladders 10 Feet and Greater: 4-inch (102 mm) wide <br />aluminum steps mounted on 12-inch (305 mm) centers to 4-1/8- <br />inch (105 mm) aluminum side rails. <br /> <br />c. Slope: 80 degrees; 3-inch (76 mm) wide aluminum steps mounted on <br />12-inch (305 mm) centers to 2-7/8-inch (73 mm) aluminum side rails. <br /> <br />2. Capacity: 1000 lbs. (450 kg). <br /> <br />a. Slope: 60 degrees; 6-inch (152 mm) wide aluminum steps mounted on <br />12-inch (264 mm) centers to 5-5/8-inch (133 mm) aluminum side rails. <br />b. Slope: 65 degrees; 6-inch (152 mm) wide aluminum steps mounted on <br />12-inch (264 mm) centers to 5-5/8-inch (133 mm) aluminum side rails. <br />c. Slope: 70 degrees; 6-inch (152 mm) wide aluminum steps mounted on <br />12-inch (264 mm) centers to 5-5/8-inch (133 mm) aluminum side rails. <br />d. Slope: 75 degrees; 6-inch (152 mm) wide aluminum steps mounted on <br />12-inch (264 mm) centers to 5-5/8-inch (133 mm) aluminum side rails. <br /> <br />3. Fasten each step with not less than eight aluminum aircraft rivets.