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11/14/2005 22:46 7635352746 BRUCE �EHRER PAGE 07/11 <br /> BXUV�.L539-Fire Resistaace Ratings-ANSUUL 263 http://database,ul.com/cgi-b' /template/LISEXT/1FRA►MFJsh... <br /> UNITED STATES GXPSUM CO--LEVELROCK Brand <br /> 2500,LEVELROCK�Brand RH <br /> System No.7 <br /> Subflooring--Min 23/32 in,thick T&G wood stru <br /> panels,min grade "Underlaymeat"or"Single Floor". ce grain <br /> vf plywood or strength axis of panel to be perpendicul to the <br /> joists with end joints staggered. Plywood or panels sec to <br /> rivsses with construction adhcsive and Na 6d ringed s <br /> nails. Staples having equal or�greater withdrawal and 1 <br /> resistance strength may be substituted for the 6d ring <br /> nails. <br /> V�por Barrier--(Optional)--Nom 0.030 in. thick <br /> commercial asphal#saturatai f+elt. <br /> Floor Mat Matertals*—(Optional)-Min 3/8 in.to 3/4 in. <br /> thick floor mat material loose laid over ihe subfloor. <br /> UN�ITED STATES GYPSUM CO---LEVELROCK Brand <br /> Sound Rsdaction Board <br /> Alternate Floor Mat Materia�ls*--(Qptional)-Nom /4 in. <br /> � thick floor mat material loase laid over the subfloor. <br /> UNiTED STATES GYPSUM CO--LEVELR4CK Brand <br /> FYoor Underlayment SRM-2S <br /> Alternate FEoor Mat Materinls*—(Optional)-Nom /S in. <br /> thick floor mat material loose laid over the subfloor. <br /> SULUTIA,INC—Type SC50 <br /> Finish Floorang--Ftaor Topping Miature*--Min 3 4 in. <br /> thickness of floor topping mixture having a rain comp ive <br /> strexigth of 2100 psi.Thickness incrcase�i to min 1 in fn use <br /> with LEVELROCK�Brand Floor�nderlayment SRM- 5. <br /> Refer to manufacturer's instructions accompanyuig the terial <br /> for specific mix design. <br /> UNITED BTATES GYPSUM CO--LEVELROCK� rand <br />