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� BXUV.L51�4 -Fire Resistance Ratings - ANSI/UL 263 Page 7 of 11 <br /> � - RAPID FLOOR SYSTEMS—Type RF, RFP or RFU. . <br /> = Floor Mat Materil 1*—(Optional)—Floor mat material nom 1/4 in. thick adhered <br /> to sub-floor with Maxxon Floor Primer. Primer to be applied to the surface of the mat <br /> prior to lath placement. <br /> ,, <br /> MAXXON CORP—Type Acousti-Mat. <br /> Metal lath—For use with floor mat material, 3/8 in. expanded galvanized steel <br /> diamond mesh, 3.4j lbs/sq yd placed over the floor mat material. Floor topping <br /> thickness a nom 1 in. over the floor mat. <br /> I <br /> � <br /> Alternate Floor Mat Material*—(Optional)—Floor mat material nom 1/4 in. <br /> thick loose laid over the subfloor. Maxxon Floor Primer to be applied to the surface <br /> of the mat prior to the floor topping placement. Floor topping thickness a min 1 in. <br /> over the floor mat. <br /> MAXXON CORP—Type Acousti-Mat II. <br /> '�� Vapor Barrier—(Optional)—Commercial asphalt saturated felt 0.030 in. thick. <br /> ;; - <br /> �; Subflooring— 15/32 or 19/32 in. thick wood structural panels,min.grade "C-D" or <br /> � "Sheathing". Face grain of plywood or strength axis of panels to be perpendicular to <br /> ' joists with joints staggered. <br /> System No. 15 <br /> Finish Floor—Mineral and Fiber Board*, sizes ranging from 3 ft by 4 ft to 8 ft by <br /> 12 ft,by min 1/2 iri. thick. All joints to be staggered a min of 12 in. OC with adjacent <br /> sub-floor joints. <br /> HOMASOTE CO—Type 440-32 Mineral and Fiber Board <br /> Sub-flooring— 1 in.by 6 in. T & G fastened diagonally to joists; or 15/32 in. thick <br /> plywood or 7/16 in. thick oriented strand board(OSB)wood structural panels,min <br /> grade "C-D" or "Slieathing". Face grain of plywood or strength axis of panel to be <br /> , perpendicular to joists with joints staggered. <br /> � System No. 16 <br /> _ ,` Finish Flooring i Floor Topping Mucture*—8 gal max of water to 1001bs min <br /> • ; of floor topping mixture to 2751bs max of sand. Compressive strength to be 2100 psi <br /> '' minimum. Thickness to be 1/2 in. minimum when used with 19/32 in. thick wood <br /> � structural panels; or 3/4 in. when used with 15/32 in. thick wood structural panels. <br /> UNITED STATES GYPSUM CO—Levelrock 3500 <br /> I <br /> � <br /> http://database.ul.com/cgi-bin/XYV/template/LI SEXT/1 FRAME/showpage.html?name=BXU... 4/19/02 <br /> � <br />