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System No. BW-S-0001 <br />c VAV us <br />Classified by ANSI/UL2079 <br />Underwriters Laboratories, Inc. <br />to UL 2079 and CANIULC-S115 Assembly Ratings —1 and 2 Hr (See Item 2) <br />Nominal Joint Width - 3/4 In. <br />L Rating at Ambient — Less than 1 CFM/Lin Ft <br />L Rating at 400° F — Less than 1 CFM/Lin Ft <br />c <br />CANIULC S115 <br />F Ratings —1 and 2 Hr (See Item 2) <br />FT Ratings —1 and 2 Hr (See Item 2) <br />FH Ratings —1 and 2 Hr (See Item 2) <br />FTH Ratings —1 and 2 Hr (See Item 2) <br />Nominal Joint Width - 3/4 In. <br />L Rating at Ambient — Less than 1 CFM/Lin Ft <br />L Rating at 400* F — Less than 1 CFM/Lin Ft <br />1. Floor Assembly— Min 4-1/2 in. (114 mm) thick reinforced lightweight or normal weight (100-150 pcf or 1600-2400 kg/m3) structural concrete. <br />Floor may also be constructed of any 6 in. (152 mm) thick UL Classified hollow -core Precast Concrete Units*. <br />See Precast Concrete Units category in the Fire Resistance Directory for names of manufactures. <br />2. Wall Assembly — The 1 or 2 h fire -rated gypsum board/steel stud wall assembly shall be constructed of the materials and in the manner specified <br />in the individual U400 or V400 Series Wall or Partition Design in the UL Fire Resistance Directory. In addition, the wall may incorporate a <br />head -of -wall joint system constructed as specified in the HW Series Joint Systems in the UL Fire Resistance Directory. The wall shall include the <br />following construction features: <br />A. Steel Floor Runner — Floor runners of wall assembly shall consist of min No. 25 gauge galv steel channels sized to accommodate steel <br />studs (Item 213). Floor runners to be provided with min 1-114 in. (32 mm) flanges. Runners secured with steel fasteners spaced 12 in. (305 <br />mm) OC. <br />B. Studs — Steel studs to be min 2-1/2 in. (64 mm) wide. Studs cut 1/2 to 3/4 in. (13 to 19 mm) less in length than assembly height with bottom <br />nesting in, resting on and fastened to floor runner with sheet metal screws. Stud spacing not to exceed 24 in. (610 mm) OC. <br />C. Gypsum Board* — Gypsum board installed to a min total thickness of 5/8 or 1-1/4 in. (16 or 32 mm) on each side of wall for a 1 or 2 hr rated <br />wall, respectively. Wall to be constructed as specified in the individual U400 or V400 Series Design in the UL Fire Resistance Directory, <br />except that a max 3/4 in. (19 mm) gap shall be maintained between the bottom of gypsum board and top of concrete floor. The hourly fire <br />rating of the joint system is equal to the hourly fire rating of the wall. <br />3. Fill, Void or Cavity Material* Sealant — Max separation between top of floor and bottom of gypsum board is 3/4 in. (19 mm). For 1 and 2 hr rated <br />wall assemblies, min 5/8 in. or 1-1/4 in. (16 or 1-1/4 mm) thickness of fill material, respectively, installed on each side of the wall between the <br />bottom of the gypsum board and the top of the concrete floor, flush with each surface of the wall. <br />HILTI CONSTRUCTION CHEMICALS, DIV OF HILTI INC — CP601S Elastomeric Firestop Sealant, CP606 Flexible Firestop Sealant, CFS-S SIL <br />GG, FS-ONE Sealant or FS-ONE MAX Intumescent Sealant <br />* Indicates such products shall bear the UL or cUL Certification Mark for jurisdictions employing the UL or cUL Certification (such as Canada), <br />respectively. <br />Reproduced by HILTI, Inc. Courtesy of <br />M=!Ym Underwriters Laboratories, Inc. <br />Hilti Firestop Systems January26, 2015 <br />Co <br />cm <br />0 <br />m <br />