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• i <br /> s BXLTV.L514 -Fire Resistance'Ratings -ANSWL 263 Page 8 of 11 <br /> � <br /> - Vapor Barrier�(Optional)—Commercial asphalt saturated.felt 0.030 in. thick. <br /> ` Sub-flooring— 15/32 or 19/32 in. thick wood sfizctural panels min grade "C-D" or <br /> "Sheathing". Face grain of plywood to be perpendicular to joists with joints <br /> staggered. � <br /> Floor Mat Materials* (Optional)—Floor mat material nom 0.4 in. thick loose laid <br /> ' over the subfloor.�Floor topping thickness a min 1 in. over the floor mat. <br /> UNITED STATES GYPSUM CO—Type USG Sound Mat <br /> System No. 17 <br /> � <br /> Finish Flooring�Floor Topping Mixture*—8 gal max of water to 1001bs min <br /> of floor topping mixture to 2751bs max of sand. Compressive strength to be 3000 psi <br /> minimum. Thickriess to be 1/2 in. minimum when used with 19/32 in. thick wood <br /> structural panels;lor 3/4 in. when used with 15/32 in. thick wood structural panels. <br /> i <br /> UNITED STATES GYPSUM CO—Levelrock 4500 <br /> , Vapor Barrier i(Optional)—Commercial asphalt saturated felt 0.030 in. thick. <br /> Sub-flooring— �15/32 or 19/32 in. thick wood structural panels min grade "C-D" or <br /> "Sheathing". Face grain of plywood to be perpendicular to joists with joints <br /> staggered. <br /> Floor Mat Materials* (Optional)—Floor mat material nom 0.4 in. thick loose laid <br /> over the subfloor� Floor topping thickness a min 1 in. over the floor mat. <br /> UNITED STATES GYPSUM CO—Type USG Sound Mat <br /> System No. 18 <br /> Finish Flooring,—Floor Topping Mixture*—3.5 gal max of water to 1001bs min <br /> of floor topping mixture to 1001bs max of washed silica sand. Compressive strength <br /> to be 3000 psi minimum. Thiclmess to be 3/4 in.minimum when used with 19/32 in. <br /> thick wood structural panels; or 1 in. when used with 15/32 in. thick wood structural <br /> panels. <br /> I <br /> � UNITED STATES GYPSUM CO—Levelrock SLC <br /> i <br /> ' , Vapor Barrier i(Optional)—Commercial asphalt saturated felt 0.030 in. thick. <br /> Sub-flooring— 15/32 or 19/32 in. thick wood structural panels min grade "C-D" or <br /> "Sheathing". Facle grain of plywood to be perpendicular to joists with joints <br /> � <br /> i <br /> http://database.ul.com/cgi-b'ui/XYV/template/LISEXT/1 FRAME/showpage.html?name=BXiJ... 4/19/02 <br />