FIRE-RESISTANCE DESIGN

Assembly Usage Disclaimer

BXUV - Fire Resistance Ratings - ANSI/UL 263 Certified for United States

BXUV7 - Fire Resistance Ratings - CAN/ULC-S101 Certified for Canada

See General Information for Fire-resistance Ratings - ANSI/UL 263 Certified for United States
Design Criteria and Allowable Variances

See General Information for Fire Resistance Ratings - CAN/ULC-S101 Certified for Canada
Design Criteria and Allowable Variances

Design No. H501

January 31, 2018

Unrestrained Assembly Ratings - 1 and 2 Hr. (Refer to Item 5)

* Indicates such products shall bear the UL or cUL Certification Mark for jurisdictions employing the UL or cUL Certification (such as Canada), respectively.

    Floor Construction
    Beam — W6 x 9, min size, 50 ksi steel.
    1. Structural Cement-Fiber Units* — Nom 3/4 in. thick, with tongue and grooved on long edges. Long dimension of panels to be perpendicular to joists with end joints staggered a min of 2 ft. and centered over the joists. Panels secured to steel joists with 1-5/8 in. long No. 8 self-drilling, self-countersinking steel screws spaced a max of 12 in. OC in the field with a screw located 1 in. and 2 in. from each edge, and 8 in. OC on the perimeter with a screw located 2 in. from each edge, located 1/2 in. from the side edges of the panel.

    UNITED STATES GYPSUM CO — Types STRUCTO-CRETE, USGSP


    2. Steel Joists — Min. 14 MSG (68 mil) corrosion-protected steel joist, min 6 in. wide, with 2 in wide flanges (600S200-68), min yield strength of 50 ksi, cold formed, designed in accordance with the 2012 edition of the Specification for the Design of Cold-Formed Steel Structural Members by the American Iron and Steel Institute (AISI). All design details including the flexural design load of the joist, shall be as specified by the steel designer and/or producer, and shall meet the requirements of all applicable local code agencies. Joists spaced max 24 in. OC. Attached to W6 x 9 beam with clip angles (Items 3, 3A) or butt weld.
    3. Clip Angles — For use with 6 in. deep joists (Item 2) when joists ends are cut to beam profile. Min. 16 MSG (54 mil) 1-1/2 in. x 1-1/2 in. x 5 in. high steel angles. Secured to beam with minimum five #12 self-drilling hex head screws. Secured to joist with five #10 self-drilling hex head screws. Only one clip angle per joist end.
    3A. Clip Angles (Alternate to Item 3) — For use with 6 in. deep joists (Item 2) when joists ends are square cut. Min. 14 MSG (68 mil), 1-7/8 in. x 8 in. x 4-7/8 in. high secured to beam with minimum four #12 self-drilling hex head screws and attached to joists with minimum six #12 self-drilling hex head screws. Only one clip angle per joist end.
    4. Joist Bridging (Not Shown) — For use with Item 2 - Installed immediately after joists are erected and before construction loads are applied. The bridging consisting of 2 in. wide flat steel strap formed from min. 16 MSG (54 mil). The structural bridging is installed perpendicular to and on the bottom flange of each joist at a maximum of 39 in. from each end of joist with one #10 self-drilling hex head steel screw per joist. Maximum spacing of bridging shall be 8 ft.
    4A. Joist Solid Blocking (Not Shown) — For use with Item 2 - Installed immediately after joists are erected and before construction loads are applied. This blocking consists of joists (Item 2) cut to length to fit in between joist cavity, using clip angles (Items 3, 3A) to attach solid bridging to joists at each end. Solid joist blocking required at each perimeter joist cavity and at joist bridge strapping (Item 4) with maximum 8 ft. OC spacing.
    5. Insulation — Batts and Blankets* — (When Insulation is not used the rating shall be 1 Hr.) Min. 3-1/2 in. thick glass fiber batt or mineral wool insulation installed in joist cavities and supported by hexagonal wire netting (Item 6) attached to the bottom of the joists. Any glass fiber or mineral wool batt insulation bearing the UL Classification Marking for Surface Burning Characteristics may be used. See Batts and Blankets (BKNV) category in the Building Materials Directory for names of manufacturers.
    6. Hexagonal Wire Netting — To be used with Item 5. Min. 20 MSG attached to bottom of steel joists (Item 2) with min. 18 MSG hanger wire wrapped around joist at 24 in. OC. Alternate Attachment Method-I - Use 1/2 in long, pan head, self-drilling screws with washers, spaced 24 in OC to attach Hexagonal Wire Netting to bottom of the Steel Joists (Item 2). Alternate Attachment Method-II -Use 3/4 in wide, min 25 MSG steel straps to attach Hexagonal Wire Netting to bottom of Steel Joists (Item 2), metal straps screw attached parallel to the bottom of the Steel Joists or perpendicular to the Steel Joists spaced 24 in OC with 1/2 in long, self-drilling screws spaced 24 in OC.
    6A. Hexagonal Wire Netting — As an alternate to Item 6 - Min 20 MSG, min 36 in wide, centered over the top of the joist cavity, bending Hexagonal Wire Netting over top of two adjacent flanges of steel joists to accommodate the insulation, with insulation installed between Hexagonal Wire Netting and Type USGSP (Item 1), prior to the Type USGSP (Item 1) being screw attached to the top of the steel joists.
    6B. Metal Strap — As an alternate to Item 6, 3/4 in wide, min 25 MSG steel straps attached perpendicular to the bottom of the steel joists (Item 2), spaced 16 in OC with 1/2 in long, self-drilling screws.
    Ceiling Construction
    Beam — W4 x 13, min size, 50 ksi steel. Supported at a maximum 12 feet. OC.
    7. Steel Joists — Min. 16 MSG (54 mil) corrosion-protected steel joist, min 4 in. deep, with 2 in wide flanges (400S200-54), min yield strength of 50 ksi, cold formed, designed in accordance with the 2012 edition of the Specification for the Design of Cold-Formed Steel Structural Members by the American Iron and Steel Institute (AISI). All design details, including the flexural design load of the joist, shall be as specified by the steel stud designer and/or producer, and shall meet the requirements of all applicable local code agencies. Joists spaced max 24 in. OC. Attached to W4 x 13 beam with clip angles (Items 8, 8A) or butt weld.
    8. Clip Angles — For use with 4 in. deep joists (Item 7) when joists ends are cut to beam profile. Min. 16 MSG, 1-1/2 in. x 1-1/2 in. x 3 in. high steel angles. Secured to beam with minimum three #12 self-drilling hex head screws. Secured to joists with three #10 self-drilling hex head screws. Only one clip angle per joist end.
    8A. Clip Angles (Alternate to Item 8) — For use with 4 in. deep joists (Item 7) when joist ends are square cut. Min. 16 MSG (54 mil), 1-1/2 in. x 4 in. x 3 in. high steel angles. Secured to beam with minimum three #12 self-drilling hex head screws, attached to joists with three #10 self-drilling hex head screws. Only one clip angle per joist end.
    9. Joist Bridging (Not Shown) — For use with Item 7 - Installed immediately after joists are erected and before construction loads are applied. The bridging consisting of 2 in. wide flat steel strap formed from min. 16 MSG (54 mil). The structural bridging is installed perpendicular to and on the bottom flange of each joist at a maximum of 42 in. from each end of joist with one #10 self-drilling hex head steel screw per joist. Maximum spacing of bridging shall be 8 ft.
    9A. Joist Solid Blocking (Not Shown) — Consisting of joists (Item 7) cut to length to fit in between joist cavities, using clip angles (Items 8, 8A) to attach solid blocking to joists at each end. Solid joist blocking required at each perimeter joist cavity and at joist bridge strapping (Item 9) with maximum 8 ft. OC spacing.
    10. Resilient Channels — Formed of min. 25 MSG galv. steel, 1/2 in. deep, spaced max 16 in. OC, perpendicular to ceiling joists (Item 7). Channel splices located beneath joists and overlapped 4 in. Channels secured to each joist with one 7/16 in. long Type S-12 low profile steel screw. Two channels spaced 6 in. OC, oriented opposite each gypsum board end joint. These channels shall extend min 6 in. beyond each side edge of board.
    10A. Steel Framing Members* — (Optional, Not Shown) — As an alternate to Item 10 — Furring channels and Steel Framing Members as described below:
      a. Furring channels — Formed of No. 25 MSG galv steel, 2-3/8 in. wide by 7/8 in. deep, spaced 16 in. OC, perpendicular to ceiling joists (Item 7). Channel secured to joists as described in Item b. Ends of adjoining channels overlapped 6 in. and tied together with double strand of No. 18 SWG galv steel wire near each end of overlap. Additional channels shall be positioned so that the distance from the end of the board to the center of the first channel is 3 in. and from the board end to the center of the next channel is 12 in.
      b. Steel Framing Members* — Used to attach furring channels (Item a) to joists (Item 7). Clips spaced 48 in. OC and secured to the bottom chord of joists with min 1-5/8 in. long No. 8 self-drilling, self-tapping, bugle, flat or hex head screw through the center grommet. Furring channels are friction fitted into clips. Additional clips required to hold furring channel that supports the gypsum board butt joints.

      PLITEQ INC — Type Genie Clip


    10B. Alternate Steel Framing Members* — (Optional, Not Shown) — As an alternate to Items 10 and 10A, furring channels and Steel Framing Members as described below.
      a. Furring channels — Formed of No. 25 MSG galv steel. 2-9/16 in. or 2-23/32 in. wide by 7/8 in. deep, spaced 16 in. OC, perpendicular to joists. Channels secured to joists as described in Item b. Ends of adjoining channels overlapped 6 in. and tied together with double strand of No. 18 SWG galv steel wire near each end of overlap.
      b. Steel Framing Members* — Used to attach furring channels (Item a) to the steel joists (Item 7). Clips spaced a max of 48 in. OC. RSIC-1 and RSIC-1 (2.75) clips secured to alternating joists with No. 8 x 2-1/2 in. coarse drywall screw through the center grommet. Furring channels are friction fitted into clips. RSIC-1 clips for use with 2-9/16 in. wide furring channels. RSIC-1 (2.75) clips for use with 2-23/32 in. wide furring channels. Adjoining channels are overlapped as described in Item a. As an alternate, ends of adjoining channels may be overlapped 6 in. and secured together with two self-tapping No. 6 framing screws, min. 7/16 in. long at the midpoint of the overlap, with one screw on each flange of the channel. Additional clips required to hold furring channel that supports the wallboard butt joints, as described in Item 11.

      PAC INTERNATIONAL L L C — Types RSIC-1 or RSIC-1 (2.75)


    11. Gypsum Board* — One layer of nom 5/8 in. thick by 48 in. wide gypsum panels installed with long dimension perpendicular to resilient/furring channels. Gypsum panels secured to resilient/furring channels with 1 in. long Type S bugle-head screws spaced 8 in. OC, with screws located 4 in. from and on each side of the gypsum panel midspan, and 1 in. from tapered edges of the board. End joints secured to both resilient/furring channels. When Steel Framing Members (Item 10A or 10B) are used, the butt joints in the gypsum board shall be supported by two furring channels. The two furring channels shall be spaced approximately 3-1/2 in. OC, and be attached to underside of the joist with one RSIC-1, RSIC-1 (2.75) or Genie clip at each end of the channel.

    CGC INC — Types C, IP-X2, IPC-AR


    UNITED STATES GYPSUM CO — Types C, IP-X2, IPC-AR, ULIX


    USG MEXICO S A DE C V — Types C, IP-X2, IPC-AR


    12. Finishing System (Not Shown) — Vinyl, dry or premixed joint compound, applied in two coats to joints and screw-heads. Nom 2 in. wide paper tape embedded in first layer of compound over all joints. As an alternate, nom 3/32 in. thick veneer plaster may be applied to the entire surface of gypsum panels.
    13. Connection Between Floor and Ceiling Construction — Steel plate, minimum 4 in. by 4 in. by 3/4 in. thick, welded between Floor and Ceiling Beams and at four corners of the modular assembly and at intermediate structural supports space a maximum of 12 ft. OC.

    * Indicates such products shall bear the UL or cUL Certification Mark for jurisdictions employing the UL or cUL Certification (such as Canada), respectively.

Last Updated on 2018-01-31
BXUV.H501 H501 BXUV 730408054 DESIGN Active 20180131 20180131 730408054 100238497 114328003 846414005 730408054 287840003

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