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System No. HW-D-0184 <br />A2. Light Gauge Framing* - Vertical Deflection Ceiling Runner —As an alternate to the ceiling runners in Items 2A and 2A1, vertical <br />deflection ceiling runner to consist of galv steel channel with slotted vertical deflection clips mechanically fastened with runner. Slotted clip <br />provided with step bushings for permanent fastening of steel studs. Flanges sized to accommodate steel studs (Item 2C). Vertical <br />deflection ceiling runner installed parallel to direction of fluted steel deck, centered beneath valley, and secured with steel masonry <br />anchors, steel fasteners or welds spaced max 24 in. (610mm) OC before or after optional spray -applied fire resistive material is used. The <br />use of welds to secure the ceiling runner may only be used prior to the installation of the optional spray -applied material. <br />A3. Light Gauge Framing*- Notched Ceiling Runner— As an alternate to the ceiling runners in Items 2A through 2A2, notched ceiling <br />runners to consist of C-shaped galv steel channel with notched return flanges sized to accommodate steel studs (Item 2C). Notched <br />ceiling runner installed parallel to direction of fluted steel deck, centered beneath valley, secured with steel masonry anchors, steel <br />fasteners or welds spaced max 24 in. (610mm) OC before or after optional spray -applied fire resistive material is used. The use of welds <br />to secure the ceiling runner may only be used prior to the installation of the optional spray -applied material. <br />OLMAR SUPPLY INC — Type SCR <br />B. Steel Attachment Clips — (Optional - Not Shown) - When spray applied fireproofing is used ceiling runner may be secured to deck with <br />Z-shaped clips formed from min. 1 in. (25 mm) long strips of min 20 ga galv steel. Length of clips should not exceed the width (thickness) <br />of the wall. Clips to be sized to extend through the thickness of the spray -applied fire -resistive material on the bottom of the steel deck with <br />1-1/2 or 2 in. (38 or 51 mm) long upper and lower legs. Legs of clips fastened to valleys of steel deck (prior to application of spray -applied <br />fire -resistive materials) and top of ceiling runner with steel fasteners or welds. Clips spaced max 24 in. (610 mm) OC. <br />C. Studs — Steel studs to be min 3-5/8 in. (92 mm) wide. Studs cut 1/2 to 3/4 in. (13 to 19 mm) less in length than assembly height with <br />bottom nesting in and resting on floor runner and with top nesting in ceiling runner without attachment. When slotted ceiling runner (Item <br />2A1) is used, steel studs secured to slotted ceiling runner with No. 8 by 1/2 in. (13 mm) long wafer head steel screws at midheight of slot <br />on each side of wall. When vertical deflection ceiling runner (Item 2A2) is used, steel studs secured to slotted vertical deflection clips, <br />through bushings, with steel screws at midheight of each slot. Stud spacing not to exceed 24 in. (610 mm) OC. <br />D. Gypsum Board* — For 1 hr assembly, one layer of 5/8 in. (16 mm) thick gypsum board is required in the individual Wall and Partition <br />Design. For 2 hr assembly, two layers of 518 in. (16 mm) thick gypsum board is required in the individual Wall and Partition Design. For <br />both hourly ratings, a nominal 3/4 in. (19 mm) gap shall be maintained between the top of the gypsum board and the bottom surface of the <br />steel deck and the top row of screws shall be installed into the studs 3 in. (76 mm) below the valleys of the steel floor units. <br />The hourly fire rating of the joint system is equal to the hourly rating of the wall. <br />3. Fill, Void or Cavity Material* — Sealant - Max separation between bottom of floor or roof and top of wall is 3/4 in. (19 mm). The joint system is <br />designed to accommodate a max 17 percent compression or extension from its installed width. Min 5/8 in. (16 mm) thickness of fill material <br />installed on each side of the wall between the top of the gypsum board and the bottom of the steel deck, flush with each surface of wall. <br />HILTI CONSTRUCTION CHEMICALS, DIV OF HILTI INC — CP 601S Elastomeric Firestop Sealant or CP 606 Flexible Firestop Sealant or <br />CFS-S SIL GG Sealant. L Ratings apply when CP 606 or CFS-S SIL GG Sealant is used. <br />4. Forming Material — (Optional, Not Shown) - Mineral wool insulation, fiberglass batt insulation or polyurethane/polyethylene foam backer rod. <br />Forming material to be recessed from both surfaces of the 2 hr fire rated wall to accommodate the required thickness of fill material. <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 />Underwriters Laboratories, Inc. <br />Hilt! Firestop Systems June 26, 2023 <br />Page: 3 of 3 <br />