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. W461

October 01, 2018

Nonbearing Wall Rating — 2 Hr

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

    1. Floor and Ceiling Runner — (Not Shown) — Min. 25 MSG galv steel, 1 in. return legs, 2-1/2 in. deep (min), attached to floor and ceiling with fasteners 24 in. OC max.
    1A. Framing Members* — Floor and Ceiling Runners — (Not Shown) — As an alternate to Item 1 - For use with Item 2A, channel shaped, min 2-1/2 in. deep, attached to floor and ceiling with fasteners 24 in. OC. max.

    ALLSTEEL & GYPSUM PRODUCTS INCType SUPREME D24/30EQD and Type SUPREME D20


    CALIFORNIA EXPANDED METAL PRODUCTS COViper20™ Track


    CONSOLIDATED FABRICATORS CORP, BUILDING PRODUCTS DIVType SUPREME D24/30EQD and Type SUPREME D20


    MARINO/WARE, DIV OF WARE INDUSTRIES INCViper20™ Track


    FUSION BUILDING PRODUCTSViper20™ Track


    IMPERIAL MANUFACTURING GROUP INCViper20™ Track


    QUAIL RUN BUILDING MATERIALS INCType SUPREME D24/30EQD and Type SUPREME D20


    SCAFCO STEEL STUD MANUFACTURING COType SUPREME D24/30EQD and Type SUPREME D20


    STEEL CONSTRUCTION SYSTEMS INCType SUPREME D24/30EQD and Type SUPREME D20


    UNITED METAL PRODUCTS INCType SUPREME D24/30EQD and Type SUPREME D20


    1B. Floor and Ceiling Runners — (Not Shown) — For use with Item 2B - Channel shaped, fabricated from min 20 MSG corrosion-protected or galv steel, min width to accommodate stud size, with min 1 in. long legs, attached to floor and ceiling with fasteners spaced max 24 in. OC.
    1C. Framing Members* — Floor and Ceiling Runners — (Not Shown) — As an alternate to Item 1 - For use with Item 2C, channel shaped, min 2-1/2 in. wide fabricated from min 0.015 in. thick galv steel, attached to floor and ceiling with fasteners 24 in. OC. max.

    CLARKDIETRICH BUILDING SYSTEMSCD ProTRAK


    DMFCWBS L L CProTRAK


    MBA METAL FRAMINGProTRAK


    RAM SALES L L CRam ProTRAK


    STEEL STRUCTURAL PRODUCTS L L CTri-S ProTRAK


    1D. Framing Members* — Floor and Ceiling Runners — (Not Shown) — As an alternate to Item 1 - For use with Item 2D, channel shaped, min 2-1/2 in. wide fabricated from min 0.018 in. thick galv steel, attached to floor and ceiling with fasteners 24 in. OC. max.

    TELLING INDUSTRIES L L CTRUE-TRACK™


    1E. Framing Members* — Floor and Ceiling Runners — (Not Shown) — As an alternate to Item 1 - For use with Item 2E, channel shaped, min 2-1/2 in. wide fabricated from min 25 MSG steel, attached to floor and ceiling with fasteners 24 in. OC. max.

    KIRII (HONG KONG) LTDType KIRII


    1F. Floor and Ceiling Runners — (Not Shown) — Channel shaped, fabricated from min 0.02 in. galv steel, min width to accommodate stud size, with min 1 in. long legs, for use with studs specified below and fabricated from min 0.018 in. galv steel or thicker, attached to floor and ceiling with fasteners spaced max 24 in. OC.

    MARINO/WARE, DIV OF WARE INDUSTRIES INCViper20™ Track VT100


    FUSION BUILDING PRODUCTSViper20™ Track VT100


    IMPERIAL MANUFACTURING GROUP INCViper20™ Track VT100


    1G. Framing Members* — Floor and Ceiling Runners — (Not Shown) — As an alternate to Item 1 - For use with Item 2G, channel shaped, min 2-1/2 in. deep, attached to floor and ceiling with fasteners 24 in. OC. max.

    TELLING INDUSTRIES L L CViper20™ Track


    1H. Framing Members* — Floor and Ceiling Runners — (Not Shown) — As an alternate to Item 1 - For use with Item 2J. Channel shaped, attached to floor and ceiling with fasteners 24 in. OC. max.

    BAILEY METAL PRODUCTS LTDType PLATINUM PLUS


    1I. Framing Members* — Floor and Ceiling Runners — (Not Shown) — As an alternate to Item 1 - For use with Item 2K, channel shaped, min 3-1/2 in. wide fabricated from min 0.018 in. thick galv steel, attached to floor and ceiling with fasteners 24 in. OC. max.

    STEEL INVESTMENT GROUP L L CAlphaTRAK


    1J. Framing Members* — Floor and Ceiling Runners — (Not Shown) — As an alternate to Item 1 - For use with Item 2L. Channel shaped, attached to floor and ceiling with fasteners 24 in. OC. max.

    OEG BUILDING MATERIALSOEG Track


    1K. Framing Members* — Floor and Ceiling Runners — (Not Shown) — As an alternate to Item 1 - For use with Item 2M, channel shaped, min 2-1/2 in. wide, attached to floor and ceiling with fasteners 24 in. OC. max.

    ALLSTEEL & GYPSUM PRODUCTS INCType SUPREME D25


    CONSOLIDATED FABRICATORS CORP, BUILDING PRODUCTS DIVType SUPREME D25


    QUAIL RUN BUILDING MATERIALS INCType SUPREME D25


    SCAFCO STEEL STUD MANUFACTURING COType SUPREME D25


    STEEL CONSTRUCTION SYSTEMS INCType SUPREME D25


    UNITED METAL PRODUCTS INCType SUPREME D25


    2. Steel Studs — Min 2-1/2 in. deep, formed of min 25 MSG galv steel max stud spacing 24 in. OC. Studs to be cut 3/4 in. less than assembly height.
    2A. Framing Members* — Steel Studs — As an alternate to Item 2 — For use with Item 1G, channel shaped studs, min 2-1/2 in. deep, spaced a max of 24 in. OC. Studs to be cut 3/4 in. less than assembly height.

    ALLSTEEL & GYPSUM PRODUCTS INCType SUPREME D24/30EQD and Type SUPREME D20


    CALIFORNIA EXPANDED METAL PRODUCTS COViper20™


    CONSOLIDATED FABRICATORS CORP, BUILDING PRODUCTS DIVType SUPREME D24/30EQD and Type SUPREME D20


    MARINO/WARE, DIV OF WARE INDUSTRIES INCViper20™


    FUSION BUILDING PRODUCTSViper20™


    IMPERIAL MANUFACTURING GROUP INCViper20™


    QUAIL RUN BUILDING MATERIALS INCType SUPREME D24/30EQD and Type SUPREME D20


    SCAFCO STEEL STUD MANUFACTURING COType SUPREME D24/30EQD and Type SUPREME D20


    STEEL CONSTRUCTION SYSTEMS INCType SUPREME D24/30EQD and Type SUPREME D20


    UNITED METAL PRODUCTS INCType SUPREME D24/30EQD and Type SUPREME D20


    2B. Steel Studs — (As an alternate to Item 2, For use with Item 4A, 4B, and 4C lead backed boards) — Channel shaped, fabricated from min 20 MSG corrosion-protected or galv steel, 3-1/2 in. min depth, spaced a max of 16 in. OC. Studs friction-fit into floor and ceiling runners. Studs to be cut 5/8 to 3/4 in. less than assembly height.
    2C. Framing Members* — Steel Studs — As an alternate to Item 2 — For use with Item 1C, channel shaped studs, min 2-1/2 in. wide fabricated from min 0.015 in. thick galv steel, spaced a max of 24 in. OC. Studs to be cut 3/4 in. less than assembly height.

    CLARKDIETRICH BUILDING SYSTEMSCD ProSTUD


    DMFCWBS L L CProSTUD


    MBA METAL FRAMINGProSTUD


    RAM SALES L L CRam ProSTUD


    STEEL STRUCTURAL PRODUCTS L L CTri-S ProSTUD


    2D. Framing Members* — Steel Studs — As an alternate to Item 2 — For use with Item 1D, channel shaped studs, min 2-1/2 in. wide fabricated from min 0.018 in. thick galv steel, spaced a max of 24 in. OC. Studs to be cut 3/4 in. less than assembly height.

    TELLING INDUSTRIES L L CTRUE-STUD™


    2E. Framing Members* — Steel Studs — As an alternate to Item 2 — For use with Item 1E, channel shaped studs, min 2-1/2 in. wide fabricated from min 25 MSG steel, spaced a max of 24 in. OC. Studs to be cut 3/4 in. less than assembly height.

    KIRII (HONG KONG) LTDType KIRII


    2F. Framing Members* — Steel Studs — As an alternate to Item 2 — For use with Item 1G, channel shaped studs, min 2-1/2 in. deep, spaced a max of 24 in. OC. Studs to be cut 3/4 in. less than assembly height.

    TELLING INDUSTRIES L L CViper20™


    2G. Framing Members* — Steel Studs — As an alternate to Item 2 — For use with Item 1, channel shaped studs, Min 2-1/2 in. deep, formed of min 25 MSG galv steel max stud spacing 24 in. OC. Studs to be cut 3/4 in. less than assembly height.

    EB METAL INCNITROSTUD


    2H. Framing Members* — Steel Studs — As an alternate to Item 2 — For use with Item 1, channel shaped studs, Min 2-1/2 in. deep, formed of min 25 MSG galv steel max stud spacing 24 in. OC. Studs to be cut 3/4 in. less than assembly height.

    OLMAR SUPPLY INCPRIMESTUD


    2I. Framing Members* — Steel Studs — As an alternate to Item 2 — For use with Item 1A (3-5/8 in. wide track), channel shaped studs, fabricated from min 25 MSG corrosion-protected steel, 1-1/4 in. wide by 3-5/8 in. deep, spaced a max of 24 in. OC. Studs to be cut 3/8 to 3/4 in. less than assembly height.

    MARINO/WARE, DIV OF WARE INDUSTRIES INCStudRite™


    2J. Framing Members* — Steel Studs — As an alternate to Item 2 — For use with Item 1H, channel shaped, min 3-5/8 in. wide, spaced a max of 24 in. OC. Studs to be cut 3/8 to 3/4 in. less than assembly height.

    BAILEY METAL PRODUCTS LTDType PLATINUM PLUS


    2K. Framing Members* — Steel Studs — As an alternate to Item 2 — For use with Item 1I, channel shaped studs, min 3-1/2 in. wide fabricated from min 0.018 in. thick galv steel, spaced a max of 24 in. OC. Studs to be cut 3/4 in. less than assembly height.

    STEEL INVESTMENT GROUP L L CAlphaSTUD


    2L. Framing Members* — Steel Studs — As an alternate to Item 2 — For use with Item 1J, channel shaped studs, Min 2-1/2 in. deep, formed of min 25 MSG galv steel max stud spacing 24 in. OC. Studs to be cut 3/8 to 3/4 in. less than assembly height.

    OEG BUILDING MATERIALSOEG Stud


    2M. Framing Members* — Steel Studs — As an alternate to Item 2 — For use with Item 1K, channel shaped studs, min 2-1/2 in. wide, spaced a max of 24 in. OC. Studs to be cut 3/4 in. less than assembly height.

    ALLSTEEL & GYPSUM PRODUCTS INCType SUPREME D25


    CONSOLIDATED FABRICATORS CORP, BUILDING PRODUCTS DIVType SUPREME D25


    QUAIL RUN BUILDING MATERIALS INCType SUPREME D25


    SCAFCO STEEL STUD MANUFACTURING COType SUPREME D25


    STEEL CONSTRUCTION SYSTEMS INCType SUPREME D25


    UNITED METAL PRODUCTS INCType SUPREME D25


    3. Batts and Blankets* — (Optional) — Mineral wool or glass fiber batts partially or completely filling stud cavity.

      See Batts and Blankets (BZJZ) category for names of manufacturers.

    3A. Fiber, Sprayed* — As an alternate to Batts and Blankets (Item 3) — (100% Borate Formulation) — Spray applied cellulose material. The fiber is applied with water to completely fill the enclosed cavity in accordance with the application instructions supplied with the product with a nominal dry density of 2.7 lb/ft3. Alternate Application Method: The fiber is applied without water or adhesive at a nominal dry density of 3.5 lb/ft3, in accordance with the application instructions supplied with the product.

    U S GREENFIBER L L CINS735 & INS745 for use with wet or dry application. INS765LD and INS770LD are to be used for dry application only.


    3B. Fiber, Sprayed* — As an alternate to Batts and Blankets (Item 3) — Spray applied cellulose insulation material. The fiber is applied with water to interior surfaces in accordance with the application instructions supplied with the product. Applied to completely fill the enclosed cavity. Minimum dry density of 4.3 pounds per cubic ft.

    NU-WOOL CO INCCellulose Insulation


    3C. Fiber, Sprayed* — As an alternate to Batts and Blankets (Item 3) — Spray applied cellulose fiber. The fiber is applied with water to completely fill the enclosed cavity in accordance with the application instructions supplied with the product. The minimum dry density shall be 4.30 lbs/ft3.

    INTERNATIONAL CELLULOSE CORPCelbar-RL


    4. Gypsum Board* — Two layers of 5/8 in. thick gypsum boards applied vertically or horizontally (except for type LGLLX which is applied vertically only). Inner layer attached to studs with #6 x 1 in. long bugle head screws spaced 12 in. OC along the top and bottom tracks and 16 in. OC in the field and along the vertical edges. Outer layer attached to studs with #6 x 1-5/8 in. long bugle head screws spaced 12 in. OC along the top and bottom tracks and 16 in. OC in the field and along the vertical edges. Vertical joints are centered over studs and staggered between layers and on opposite sides of the wall. Horizontal joints on the face layer are staggered 12 in. from the base layer. Horizontal joints need not to be backed by steel framing.
    a. As an alternate - Two layers of 1/2 thick gypsum boards applied vertically, or inner layer gypsum board applied vertically, outer layer wallboard applied horizontally. Inner layer attached to studs with 1 in. Type S steel screws spaced 24 in. O.C. along vertical edges and in the field. When outer layer is applied horizontally, outer layer attached to the studs over the inner layer with 1-5/8 in. long Type S steel screws spaced 12 in. OC in the field, along the vertical edges, and to the floor and ceiling runners. Outer layer secured to inner layer gypsum board with 1-1/2 in. long Type G steel screws located midway between studs and 1 in. from the horizontal joint. Outer layer gypsum board joints covered with joint tape and min two coats of joint compound, and screw heads covered with min two coats of joint compound. Joints reinforced.
    b. As an alternate - Inner layer of 1/2 in. thick gypsum board applied vertically to studs with 1 in. Type S steel screws spaced 24 in. OC along vertical edges and in the field. Outer layer of 5/8 in. thick gypsum board applied either vertically or horizontally, and attached to studs with 1-5/8 in. long Types S steel screws spaced 12 in. OC in the field, along the vertical edges and to the floor and ceiling runners.
    c. As an alternate - Inner layer of 5/8 in. thick board applied either vertically or horizontally to studs with 1 in, long Type S steel screws spaced 24 in. OC along the vertical edges and in the field. Outer layer of 1/2 in. thick board applied vertically and attached to studs with 1-5/8 in. long Type S steel screws spaced 12 in. OC in the field, along the vertical edges, and to the floor and ceiling runners.

    CONTINENTAL BUILDING PRODUCTS OPERATING CO, L L C1/2 in. thick Type LGFC-C/A, and 5/8 in. thick Types LGFC-C/A, LGFC2A, LGFC6A, LGFC-WD and LGLLX (Type LGLLX to be applied vertically only)


    4A. Gypsum Board* — (Not Shown) — (As an alternate to Item 4 when used as the base layer on one or both sides of wall. For direct attachment only to steel studs Item 2B) — Nom 5/8 in. thick lead backed gypsum panels with beveled, square or tapered edges, applied vertically. Vertical joints centered over studs and staggered min 1 stud cavity on opposite sides of studs. Gypsum board secured to studs with 1-1/4 in. long Type S-12 steel screws spaced 8 in. OC at perimeter and 12 in. OC in the field.

    RAY-BAR ENGINEERING CORPType RB-LBG


    4B. Gypsum Board* — (Not Shown) — (As an alternate to Item 4 when used as the base layer on one or both sides of wall. For direct attachment only to steel studs Item 2B) — Nom 5/8 in. thick lead backed gypsum panels with beveled, square or tapered edges, applied vertically. Vertical joints centered over studs and staggered min 1 stud cavity on opposite sides of studs. Wallboard secured to studs with 1-5/8 in. long Type S 12 steel screws spaced 8 in. OC at perimeter and 12 in OC in the field. Lead batten strips required behind vertical joints of lead backed gypsum wallboard and optional at remaining stud locations. Fasteners for face layer gypsum panels when installed over lead backed board to be min 2-1/2 in. Type S-12 bugle head steel screws spaced as described in Item 4. To be used with Lead Batten Strips (see Item 5A) or Lead Discs (see Item 6A).

    MAYCO INDUSTRIES INCType X-Ray Shielded Gypsum


    4C. Gypsum Board* — (As an alternate to Item 4 when used as the base layer on one or both sides of wall. For direct attachment only to steel studs Item 2B) — Nom 5/8 in. thick lead backed gypsum panels with beveled, square or tapered edges, applied vertically. Vertical joints centered over studs and staggered min 1 stud cavity on opposite sides of studs. Wallboard secured to studs with 1-1/4 in. long Type S-12 steel screws gypsum panel steel screws spaced 8 in. OC at perimeter and 12 in. OC in the field. Lead batten strips required behind vertical joints of lead backed gypsum wallboard and optional at remaining stud locations. Lead batten strips, min 2 in. wide, max 8 ft long with a max thickness of 0.14 in. placed on the face of studs and attached to the stud with construction adhesive and two 1 in. long Type S-12 pan head steel screws, one at the top of the strip and one at the bottom of the strip. Lead discs, nominal 3/8 in. diam by max 0.085 in. thick. Compression fitted or adhered over the screw heads. Lead batten strips and discs to have a purity of 99.9% meeting the Federal specification QQ-L-201f, Grade "C".

    RADIATION PROTECTION PRODUCTS INCType RPP - Lead Lined Drywall


    5. Lead Batten Strips — (Not Shown, For Use With Item 4A) — Lead batten strips, min 1-1/2 in. wide, max 10 ft long with a max thickness of 0.125 in. Strips placed on the interior face of studs and attached from the exterior face of the stud with two 1 in. long Type S-12 pan head steel screws, one at the top of the strip and one at the bottom of the strip. Lead batten strips to have a purity of 99.9% meeting the Federal specification QQ-L-201f, Grade "C". Lead batten strips required behind vertical joints of lead backed gypsum board (Item 4D) and optional at remaining stud locations. Required behind vertical joints.
    5A. Lead Batten Strips — (Not Shown, for use with Item 4B) — Lead batten strips, 2 in. wide, max 10 ft long with a max thickness of 0.140 in. Strips placed on the face of studs and attached to the stud with two min. 1 in. long min. Type S-8 pan head steel screws, one at the top of the strip and one at the bottom of the strip or with one min. 1 in. long min. Type S-8 pan head steel screw at the top of the strip. Lead batten strips to have a purity of 99.5% meeting the Federal specification QQ-L-201f, Grades "B, C or D". Lead batten strips required behind vertical joints of lead backed gypsum wallboard (Item 6) and optional at remaining stud locations.
    6. Lead Discs or Tabs — (Not Shown, For Use With Item 4A) — Used in lieu of or in addition to the lead batten strips (Item 5) or optional at other locations - Max 3/4 in. diam by max 0.125 in. thick lead discs compression fitted or adhered over steel screw heads or max 1/2 in. by 1-1/4 in. by max 0.125 in. thick lead tabs placed on gypsum boards (Item 4D) underneath screw locations prior to the installation of the screws. Lead discs or tabs to have a purity of 99.9% meeting the Federal specification QQ-L-201f, Grade "C".
    6A. Lead Discs — (Not Shown, for use with Item 4B) — Max 5/16 in. diam by max 0.140 in. thick lead discs compression fitted or adhered over steel screw heads. Lead discs to have a purity of 99.5% meeting the Federal Specification QQ-L-201f, Grades "B, C or D".
    7. Mineral and Fiber Board* — (Optional, Not Shown) — For optional use as an additional layer on one side of wall. Nom 1/2 in. thick, 4 ft wide with long dimension parallel and centered over studs. Attached to studs and floor and ceiling runners with 1-5/8 in. long Type S steel screws, spaced 12 in. OC. The required UL Classified gypsum board layer(s) is/are to be installed as indicated as to fastener type and spacing, except that the required fastener length shall be increased by a minimum of 1/2 in. Not evaluated or intended as a substitute for the required layer(s) of UL Classified Gypsum Board.

    HOMASOTE COHomasote Type 440-32


    8. Furring Channels — (Optional, Not Shown — not for use with Items 4A, 4B, or 4C) — Resilient furring channels fabricated from min 25 MSG corrosion-protected steel, spaced vertically a max of 24 in. OC. Flange portion attached to each intersecting stud with 1/2 in. long Type S-12 steel screws.
    8A. Framing Members* — (Optional on one or both sides, Not Shown — not for use with Items 4D, 4H, 4J, or 4N) — As an alternate to Item 8, 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 max. 24 in. OC perpendicular to studs. Channels secured to studs as described in Item b.
      b. Steel Framing Members* — Used to attach furring channels (Item 8Aa) to studs. Clips spaced max. 48 in. OC. RSIC-1 and RSIC-1 (2.75) clips secured to studs with No. 8 x 1-1/2 in. minimum self-drilling, S-12 steel screw through the center grommet. RSIC-V and RSIC-V (2.75) clips secured to studs with No. 8 x 9/16 in. minimum self-drilling, S-12 steel screw through the center hole. Furring channels are friction fitted into clips. RSIC-1 and RSIC-V clips for use with 2-9/16 in. wide furring channels. RSIC-1 (2.75) and RSIC-V (2.75) clips for use with 2-23/32 in. wide furring channels.

      PAC INTERNATIONAL L L CTypes RSIC-1, RSIC-V, RSIC-1 (2.75), RSIC-V (2.75)


    8B. Framing Members* — (Optional on one or both sides, Not Shown — Not for use with Items 4D, 4H, 4J, or 4N) — As an alternate to Item 8, furring channels and Steel Framing Members as described below:
      a. Furring Channels — Formed of No. 25 MSG galv steel. Spaced 24 in. OC perpendicular to studs. Channels secured to studs as described in Item b. Ends of adjoining channels overlapped 6 in. and tied together with double strand of No. 18 AWG galvanized steel wire. Gypsum board attached to furring channels as described in Item 4.
      b. Steel Framing Members* — Used to attach furring channels (Item a) to studs. Clips spaced 48 in. OC., and secured to studs with 2 in. coarse drywall screw with 1 in. diam washer through the center hole. Furring channels are friction fitted into clips.

      STUDCO BUILDING SYSTEMSRESILMOUNT Sound Isolation Clips - Type A237R


    * 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 2018-10-01
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