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<br />Copyright 2003 AIA <br /> <br />MASTERSPEC - SHORT FORM <br /> <br />05/03 <br /> <br />2. Manufacturers: Subject to compliance with requirements, provide products by one of the <br />following: <br /> <br />a. Celcore Inc:orporated. <br />b. Elastizell Corporation of America. <br />c. Lite-Crete Inc. <br />d. Sip last. <br />e. <Insert m~mufacturer's name.> <br /> <br />3. As-Cast Unit Weight: 34 to 42 Ib/cu. ft. (545 to 673 kg/cu. m) at point of placement, <br />when tested according to ASTM C 138/C 138M. <br />4. Oven-Dry Unit Weight: 26 to 32 1b/cu. ft. (416 to 513 kg/cu. m), when tested according <br />to ASTM C 495. <br />5. Compressive Str'~ngth: Minimum 190 psi (1310 kPa), when tested according to <br />ASTM C 495. <br /> <br />PART 3 - EXECUTION <br /> <br />3.1 PREPARATION <br /> <br />A. Control Joints: Install control joints at perimeter of roof deck and at junctures with vertical <br />surfaces, including curb:~, walls, and vents, for full depth of lightweight insulating concrete. Fill <br />control joints with joint filler. <br /> <br />1. Provide l-inch- (25-mm-) wide control joints for roof dimensions up to 100 feet (30 m) <br />in length; l-1/2-inch- (38-mm-) wide control joints for roof dimensions exceeding 100 <br />feet (30 m). <br /> <br />B. Wire Mesh: Place steel wire mesh with longest dimension perpendicular to steel deck ribs. Cut <br />mesh to fit around roof openings and projections. Terminate mesh at control joints. Lap sides <br />and ends of mesh at least 6 inches (150 mm). <br /> <br />C. Welded Wire Reinforcmlent: Place steel welded wire reinforcement with longest dimension <br />perpendicular to steel deck ribs. Cut reinforcement to fit around roof openings and projections. <br />Terminate reinforcement at control joints. Lap sides and ends of reinforcement at least 6 inches <br />(150 mm). <br /> <br />3.2 MIXING AND PLACING <br /> <br />A. Mix and place lightweight insulating concrete according to manufacturer's written instructions, <br />using equipment and procedures to avoid segregation of mixture and loss of air content. <br /> <br />B. Install insulation boardl according to lightweight insulating concrete manufacturer's written <br />instructions. Place insulation board in wet, lightweight insulating concrete slurry poured a <br />minimum of 1/8 inch (3 mm) over the structural substrate. Ensure full contact of insulation <br />board with slurry. Stagger joints and tightly butt insulation boards. <br /> <br />LIGHTWEIGHT INSULATING CONCRETE <br /> <br />03521 - 4 <br />