June 22, 2023
June 22, 2023
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ANSI/UL2079 |
CAN/ULC S115 |
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Assembly Ratings – 1 and 2 Hr (See Item 2) |
F Ratings – 1 and 2 Hr (See Item 2) |
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Nominal Joint Width – 1/2, 3/4 In. (See Items 2 and 3) |
FT Ratings – 1 and 2 Hr (See Item 2) |
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Class II and III Movement Capabilities — 50% Compression and 100% Extension |
FH Ratings – 1 and 2 Hr (See Item 2) |
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L Rating at Ambient – Less Than 1 CFM/ft |
FTH Ratings – 1 and 2 Hr (See Item 2) |
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L Rating at 400°F – Less than 1 CFM/ft |
Nominal Joint Width – 13, 19 mm (see Items 2 and 3) |
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The air leakage rating does not apply if item 1E.1 is used |
Class II or III Movement Capabilities – 75% Compression and 25% extension or 80% compression and 30% extension (see item 3) |
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L Rating at Ambient – Less Than 1.55 L/s/m |
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L Rating at 203°C – Less Than 1.55 L/s/m |
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The air leakage rating does not apply if item 1E.1 is used |
1. Floor Assembly — The fire-rated fluted steel deck/concrete floor assembly shall be constructed of the materials and in the manner described in the individual D700 or D900 Series Floor-Ceiling Design in the UL Fire Resistance Directory and shall include the following construction features:
A. Steel Floor And Floor Units* — Max 3 in. (76 mm) deep galv steel fluted floor units.
B. Concrete — Min 2-1/2 in. (64 mm) thick reinforced concrete, as measured from the top plane of the floor units.
C. Structural Steel Support — Steel beam, as specified in the individual D700 or D900 Series Floor-Ceiling Design, used to support steel floor units. Structural steel support oriented parallel to and 8 in. (203 mm) max from wall assembly.
D. Steel Attachment Clips — 1 in. (25 mm) wide Z-shaped clips or channels formed from min 20 ga galv or painted steel. Clips to be sized to extend through the thickness of the spray-applied fire-resistive material on the bottom flange of the steel beam with 1-1/2 in. (38 mm) long upper and lower legs. Legs of clips fastened to bottom of beam (prior to application of spray-applied fire-resistive materials) with steel fasteners or welds and to ceiling runner of wall with bolts or screws. Clips spaced max 16 in. (406 mm) OC and extend from steel support beam to flush with non-beam face of wall.
E. Steel Plate — Min 22 Ga sheet steel shall be installed under and attached to the steel attachment clips or channels (Item 1D) to completely cover the exposed area from the flange tip of the steel beam to the framed wall surface. The plate shall be secured with steel fasteners or welds and shall be covered with spray applied fire resistive material (see Item 1F).
E1. Steel Lath — (Not Shown) As an alternate to 1E above. Nom 3/8 in. (10 mm) diamond mesh expanded steel rib lath having a nom weight of 3.4 lb/yd2 (1.8 kg/m2) shall be installed over and attached to the steel attachment clip bars or channels (Item 1D) to completely cover the exposed area from the flange tip of the steel beam to the end of the bar/channel framing extending beyond the wall surface. The lath shall be secured with steel fasteners or tie wire and shall be fully covered with spray applied fire resistive material (Item 1F).
F. Spray-Applied Fire Resistive Material* — After installation of the steel attachment clips, steel plate, angle, ceiling runners, structural steel support, and steel floor units (as applicable), to be sprayed with the min thickness of material specified in the individual D700 or D900 Series Design. Each steel attachment clip is to be fully covered with spray applied fire resistive material to the minimum thickness of material required on the flanges of the steel beam. The spaces between the clips and above the steel plate (Item 1E) shall also be fully filled from beam and over the entire thickness of the wall. The spaces between the clips and above and below the steel lath (Item 1E.1) shall also be fully filled from beam and over the entire thickness of the wall. Additional material shall be applied to the web of steel beam on each side of wall. The min total thickness of material applied to each side of steel beam web shall be 13/16 in. (21 mm) for 1 hr Assembly Rating and 1-1/2 in. (38 mm) for 2 hr Assembly Rating. When Item 3A is not used, the flutes of the steel floor units are to be filled with material across the entire top flange of the steel beam. For D700 floors, the remainder of the steel floor units shall be sprayed as specified in the individual D700 design.
1A. Roof Assembly — (Not Shown) — As an alternate to the floor assembly, a fire-rated fluted steel deck roof assembly may be used. The roof assembly shall be constructed of the materials and in the manner described in the individual P700 or P900 Series Roof-Ceiling Design in the UL Fire Resistance Directory. The roof assembly shall include the following construction features:
A. Steel Roof Deck — Max 3 in. (76 mm) deep galv steel fluted roof deck.
B. Roof Insulation — Min 2-1/4 in. (57 mm) thick poured insulating concrete, as measured from the top plane of the roof deck.
C. Structural Steel Support — Steel beam, as specified in the individual P700 or P900 Series Design, used to support steel floor units. Structural steel support oriented parallel to and 8 in. (203 mm) max from wall assembly.
D. Steel Attachment Clips — 1 in. (25 mm) wide Z-shaped clips or channels formed from min 20 ga galv or painted steel. Clips to be sized to extend through the thickness of the spray-applied fire-resistive material on the bottom flange of the steel beam with 1-1/2 in. (38 mm) long upper and lower legs. Legs of clips fastened to bottom of beam (prior to application of spray-applied fire-resistive materials) with steel fasteners or welds and to ceiling runner of wall with bolts or screws. Clips spaced max 16 in. (406 mm) OC and extend from steel support beam to flush with non-beam face of wall.
E. Steel Plate — Min 22 Ga sheet steel shall be installed under and attached to the steel attachment clips or channels (Item 1D) to completely cover the exposed area from the flange tip of the steel beam to the framed wall surface. The plate shall be secured with steel fasteners or welds and shall be covered with spray applied fire resistive material (see Item 1F).
E1. Steel Lath — (Not shown) As an alternate to 1E above. Nom 3/8 in. (10 mm) diamond mesh expanded steel rib lath having a nom weight of 3.4 lb/yd2 (1.8 kg/m2) shall be installed over and attached to the steel attachment clip bars or channels (Item 1D) to completely cover the exposed area from the flange tip of the steel beam to the end of the bar/channel framing extending beyond the wall surface. The lath shall be secured with steel fasteners or tie wire and shall be fully covered with spray applied fire resistive material (Item 1F).
F. Spray-Applied Fire Resistive Material* — After installation of the steel attachment clips, steel plate, angles, ceiling runners, structural steel support, and roof deck (as applicable), to be sprayed with the min thickness of material specified in the individual P700 or P900 Series Design. Each steel attachment clip is to be fully covered with spray applied fire resistive material to the minimum thickness of material required on the flanges of the steel beam. The spaces between the clips and above steel plate (Item 1E) shall also be fully filled from beam and over the entire thickness of the wall. The spaces between the clips and above and below the steel lath (Item 1E.1) shall also be fully filled from beam and over the entire thickness of the wall. Additional material shall be applied to the web of steel beam on each side. The min total thickness of material applied to each side of steel beam web shall be 13/16 in. (21 mm) for 1 hr Assembly Rating and 1-1/2 in. (38 mm) for 2 hr Assembly Rating. When Item 3A is not used, the flutes of the roof deck are to be filled with material across the entire top flange of the steel beam. For P700 roof-ceiling assemblies, the remainder of the roof deck shall be sprayed as specified in the individual P700 design.
1B. Floor Assembly — (Not Shown) — As an alternate to Item 1, min 4-1/2 in. thick reinforced lightweight or normal weight (100 to 150 pcf) structural concrete
2. Wall Assembly — The 1 or 2 hr fire rated gypsum board/stud wall assembly shall be constructed of the materials and in the manner described in the individual U400 or V400 Series Wall and Partition Design in the UL Fire Resistance Directory and shall include the following construction features:
A. Steel Floor and Ceiling Runners — Floor runner U-shaped, sized to accommodate steel studs (Item 2B), fabricated from 20 ga galv steel. Runners attached to steel attachment clips through steel plate (Item 1E) with min 2 in. (51 mm) long steel fasteners, minimum one fastener per clip. The ceiling runners are provided legs that are to be min 1/4 in. (6 mm) longer than the maximum joint width. Ceiling runner to be installed parallel with structural steel support and located such that a max clearance of 8 in. (203 mm) is present between the finished wall and the flange of the steel beam (Item 1C).
A.1. Light Gauge Framing* — Slotted Ceiling Track — (Not Shown) - As an alternate to the Item 2A, a ceiling track consisting of galv steel channel with slotted flanges may be used. Slotted ceiling track sized to accommodate steel studs (Item 2B). Legs are to be min 1/4 in. (6 mm) longer than the maximum joint width. Attached to steel deck with steel fasteners or welds spaced max 24 in. (610 mm) OC.
B. 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 bottom nesting in and secured to floor runner. Steel studs secured to slotted ceiling runner with No. 8 by 1/2 in. (13 mm) long wafer head steel screws at mid-height of exposed slot. Studs spaced max 24 in. (610 mm) OC.
C. Gypsum Board* — Gypsum board 1/2 or 5/8 in. (13 or 16 mm) thick, applied on both sides of wall as specified in the individual Wall and Partition Design. The screws attaching the gypsum board layer(s) to the studs shall be located 4 to 5 in. (102 to 127 mm) down from deck at time of installation. No gypsum board attachment screws shall be driven into the ceiling runner.
The hourly rating of the joint system is equal to the hourly fire rating of the wall.
3. Joint System — Max separation between bottom of floor and top of wall (at time of installation of joint system) is 1/2 in. (13 mm) or 3/4 in. (19 mm) and the movement is 50% Compression and 100% Extension.
A. Forming Material* — Min 4 pcf (64 kg/m3) mineral wool insulation cut to the shape of the fluted steel floor or roof deck units, approx 33% larger than the area of the flutes. Pieces compressed and inserted into and completely filling the flutes above the structural support member. As an option, the spray-applied fire resistive material described in Item 1 can be used in place of the packing material.
B. Fill, Void or Cavity Material* - Blaze Foam consists of nom 1-1/2 in. (38 mm) high by 5/8 in. (16 mm) thick foam with integral 5/8 in. (16 mm) wide intumescent strip adhered to bottom surface. One strip of Blaze Foam to be compressed and inserted into joint against the ceiling runner or flush with outside wall surface, between top edge of the drywall and the floor/ceiling assembly, with the intumescent strip positioned at bottom and resting on the cut edge of the gypsum board. Blaze Foam is supplied in varying lengths and shall be cut to length and friction fit within the joint with ends tightly butted. Blaze Foam applied within joint opening on both sides of wall. A layer of tape and joint compound shall be applied over the Blaze Foam for nominal joints larger than ½ in (13mm).
* Indicates such products shall bear the UL or cUL Certification Mark for jurisdictions employing the UL or cUL Certification (such as Canada), respectively.