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. U451

September 27, 2018

Nonbearing Wall Rating — 1 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. Studs — Channel-shaped, min 2-1/2 in. wide by 1-1/4 in. deep with 5/16 in. folded back return flange legs. Fabricated from No. 25 MSG galv steel. Max stud spacing 24 in. OC. Studs to be cut 1 in. less than assembly height.
    1A. Framing Members* — Steel Studs — Not Shown — In lieu of Item 1 — For use with Item 2A, proprietary channel shaped steel studs, 1-1/4 in. deep by min 2-1/2 in. wide fabricated from min 0.018 in. thick galv steel. Max stud spacing 24 in. OC. Studs cut 1 in. less in length than assembly height.

    CALIFORNIA EXPANDED METAL PRODUCTS CO — Viper20™


    MARINO/WARE, DIV OF WARE INDUSTRIES INC — Viper20™


    FUSION BUILDING PRODUCTS — Viper20™


    IMPERIAL MANUFACTURING GROUP INC — Viper20™


    1B. Framing Members* — Steel Studs — Not Shown — In lieu of Item 1 — For use with Item 2B, channel shaped steel studs, 1-1/4 in. deep by min 2-1/2 in. wide fabricated from min 0.018 in. thick galv steel, spaced max 24 in. OC. Studs cut 1 in. less in length than assembly height.

    CLARKDIETRICH BUILDING SYSTEMS — CD ProSTUD


    DMFCWBS L L C — ProSTUD


    MBA METAL FRAMING — ProSTUD


    RAM SALES L L C — Ram ProSTUD


    STEEL STRUCTURAL PRODUCTS L L C — Tri-S ProSTUD


    1C. Framing Members* — Steel Studs — Not Shown — In lieu of Item 1 — For use with Item 2C, proprietary channel shaped steel studs, 1-1/4 in. deep by min 2-1/2 in. wide fabricated from min 0.018 in. thick galv steel. Max stud spacing 24 in. OC. Studs cut 1 in. less in length than assembly height.

    TELLING INDUSTRIES L L C — Viper20™


    1D. Framing Members* — Steel Studs — Not Shown — In lieu of Item 1 — For use with Item 2D, channel shaped steel studs, 1-1/4 in. deep by min 2-1/2 in. wide fabricated from min 0.018 in. thick galv steel, spaced max 24 in. OC. Studs cut 1 in. less in length than assembly height.

    TELLING INDUSTRIES L L C — TRUE-STUD™


    1E. Framing Members* — Steel Studs — As an alternate to Item 1 — For use with Item 2A (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 INC — StudRite™


    1F. Framing Members* — Steel Studs — Not Shown — In lieu of Item 1 — For use with Item 2, channel shaped steel studs, 2-1/2 in. wide by min 1-1/4 in. deep fabricated from min No. 25 MSG galv steel, spaced max 24 in. OC. Studs cut 1 in. less in length than assembly height.

    EB METAL INC — NITROSTUD


    1G. Framing Members* — Steel Studs — As an alternate to Item 1 — For use with Item 2E, 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 LTD — Type PLATINUM PLUS


    1H. Framing Members* — Steel Studs — Not Shown — In lieu of Item 1 — For use with Item 2F, channel shaped steel studs, 1-1/4 in. deep by min 3-1/2 in. wide fabricated from min 0.018 in. thick galv steel, spaced max 24 in. OC. Studs cut 3/8 to 3/4 in. less in length than assembly height.

    STEEL INVESTMENT GROUP L L C — AlphaSTUD


    2. Floor and Ceiling Runners — (Not Shown) — Channel-shaped runners, min 2-1/2 in. wide by 1-1/4 in. deep, fabricated from No. 20 MSG galv steel. Attached to floor and ceiling with fasteners, 24 in. OC, max.
    2A. Framing Members* — Floor and Ceiling Runner — Not Shown — In lieu of Item 2 — For use with Item 1A, proprietary channel shaped runners, 1-1/4 in. deep by min 2-1/2 in. wide fabricated from min 0.018 in. thick galv steel, attached to floor and ceiling with fasteners spaced 24 in. OC max.

    CALIFORNIA EXPANDED METAL PRODUCTS CO — Viper20™ Track


    MARINO/WARE, DIV OF WARE INDUSTRIES INC — Viper20™ Track


    FUSION BUILDING PRODUCTS — Viper20™ Track


    IMPERIAL MANUFACTURING GROUP INC — Viper20™ Track


    2B. Framing Members* — Floor and Ceiling Runners — Not Shown — In lieu of Item 2 — For use with Item 1B, channel shaped runners, 1-1/4 in. deep by min 2-1/2 in. wide fabricated from min 0.018 in. thick galv steel, attached to floor and ceiling with fasteners spaced 24 in. OC max.

    CLARKDIETRICH BUILDING SYSTEMS — CD ProTRAK


    DMFCWBS L L C — ProTRAK


    MBA METAL FRAMING — ProTRAK


    RAM SALES L L C — Ram ProTRAK


    STEEL STRUCTURAL PRODUCTS L L C — Tri-S ProTRAK


    2C. Framing Members* — Floor and Ceiling Runner — Not Shown — In lieu of Item 2 — For use with Item 1C, proprietary channel shaped runners, 1-1/4 in. deep by min 2-1/2 in. wide fabricated from min 0.018 in. thick galv steel, attached to floor and ceiling with fasteners spaced 24 in. OC max.

    TELLING INDUSTRIES L L C — Viper20™ Track


    2D. Framing Members* — Floor and Ceiling Runners — Not Shown — In lieu of Item 2 — For use with Item 1D, channel shaped runners, 1-1/4 in. deep by min 2-1/2 in. wide fabricated from min 0.018 in. thick galv steel, attached to floor and ceiling with fasteners spaced 24 in. OC max.

    TELLING INDUSTRIES L L C — TRUE-TRACK™


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

    BAILEY METAL PRODUCTS LTD — Type PLATINUM PLUS


    2F. Framing Members* — Floor and Ceiling Runners — Not Shown — In lieu of Item 2 — For use with Item 1H, channel shaped runners, 1-1/4 in. deep by min 3-1/2 in. wide fabricated from min 0.018 in. thick galv steel, attached to floor and ceiling with fasteners spaced 24 in. OC max.

    STEEL INVESTMENT GROUP L L C — AlphaTRAK


    3. Resilient Channel — 25 MSG galv steel resilient channels spaced vertically max 24 in. OC, flange portion attached to each intersecting stud with 1/2 in. long Type S-12 pan head steel screws.
    3A. Framing Members* — (Not Shown) — As an alternate to Item 3, furring channels and 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 24 in. OC perpendicular to studs. Channels secured to studs as described in Item b. Ends of adjoining channels are overlapped 6 in. and tied together with double strand of No. 18 SWG galv steel wire near each end of overlap. 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.
      b. Framing Members* — Used to attach furring channels (Item a) to studs (Item 1). Clips spaced 48 in. OC., and secured to studs with 1-5/8 in. wafer or hex head Type S steel screw through the center grommet. Furring channels are friction fitted into clips. RSIC-1 clip for use with 2-9/16 in. wide furring channels. RSIC-1 (2.75) clip for use with 2-23/32 in. wide furring channels.

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


    3B. Framing Members* — (Not Shown) — (Optional on one or both sides) — Alternate to Item 3, 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 max. 24 in. OC perpendicular to studs. Channels secured to studs (Item 1) as described in Item b. Gypsum board attached to furring channels as described in Item 5. Not for use with Item 5A and 5E.
      b. Steel Framing Members* — Used to attach furring channels (Item 3Ba) to studs (Item 1). Clips spaced max. 48 in. OC. GENIE CLIPS secured to studs with No. 8 x 1-1/2 in. minimum self-drilling, S-12 steel screw through the center grommet. Furring channels are friction fitted into clips.

      PLITEQ INC — Type Genie Clip


    3C. Steel Framing Members* — (Optional, Not Shown) — 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 5. Not for use with Item 5A.
      b. Steel Framing Members* — Used to attach furring channels (Item 3Ca) 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 SYSTEMS — RESILMOUNT Sound Isolation Clips - Type A237R


    3D. Steel Framing Members* — (Optional, Not Shown) — 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 3Db. 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 5. Not for use with Item 5A.
      b. Steel Framing Members* — Used to attach furring channels (Item 3Da) to studs. Clips spaced 48 in. OC., and secured to studs with No. 8 x 2-1/2 in. coarse drywall screw through the center hole. Furring channels are friction fitted into clips.

      REGUPOL AMERICA — Type SonusClip


    3E. Steel Framing Members* — (Optional, Not Shown) — Resilient channels and Steel Framing Members as described below:
      a. Resilient Channels — Formed of No. 25 MSG galv steel, spaced 24 in. OC, and perpendicular to studs. Channels secured to studs as described in Item b. Ends of adjoining channels overlapped 6 in. and secured in place with two No. 8 15 x 1/2 in. Philips Modified Truss screws spaced 2-1/2 in. from the center of the overlap. Gypsum board attached to resilient channels as described in Item 5. Not for use with Item 5A.
      b. Steel Framing Members* — Used to attach resilient channels (Item 3Ea) to studs. Clips spaced 48 in. OC., and secured to studs with No. 8 x 2-1/2 in. coarse drywall screw through the center hole. Resilient channels are secured to clips with one No. 10 x 1/2 in. pan-head self-drilling screw.

      KEENE BUILDING PRODUCTS CO INC — Type RC+ Assurance Clip


    4. Batts and Blankets* — Placed in stud cavity, 1-1/2 in. min thickness.

    ROCKWOOL — Type AFB


    THERMAFIBER INC — Type SAFB, SAFB FF


    5. Gypsum Board* — 1/2 or 5/8 in. thick, 4 ft wide. Screw attached one side to resilient or furring channels with 1 in. long, Type S steel screws spaced 12 in. OC. Gypsum board on direct attached side secured to studs with 1 in. long Type S-12 steel screws spaced 12 in. Gypsum board joints oriented vertically, located over studs and offset between layers.

    ACADIA DRYWALL SUPPLIES LTD — Type C


    AMERICAN GYPSUM CO — Type AG-C


    CERTAINTEED GYPSUM INC — 1/2 in. or 5/8 in. Type C, 5/8 in. Type X-2


    CGC INC — 1/2 in. Type C, IP-X2, IPC-AR or WRC, 5/8 in. Type AR, IP-AR, IP-X1 or SCX


    CONTINENTAL BUILDING PRODUCTS OPERATING CO, L L C — Type LGFC-C/A


    GEORGIA-PACIFIC GYPSUM L L C — Types 5, C, DAP, DA, DAPC, TG-C


    NATIONAL GYPSUM CO — Types eXP-C, FSK-C, FSW-C, FSMR-C


    NATIONAL GYPSUM CO — Riyadh, Saudi Arabia — 5/8 in. Type FR


    PABCO BUILDING PRODUCTS L L C, DBA PABCO GYPSUM — Type C or PG-C


    PANEL REY S A — Types PRC, PRC2


    SAINT-GOBAIN GYPROC MIDDLE EAST FZE — Type Gyproc FireStop, Gyproc FireStop MR, Gyproc FireStop M2TECH, Gyproc FireStop ACTIV'Air, Gyproc FireStop MR ACTIV'Air, Gyproc FireStop M2TECH ACTIV'Air, Gyproc DuraLine, Gyproc DuraLine MR, Gyproc DuraLine M2TECH, Gyproc DuraLine ACTIV'Air, Gyproc DuraLine MR ACTIV'Air, Gyproc DuraLine M2TECH ACTIV'Air


    THAI GYPSUM PRODUCTS PCL — Type C


    UNITED STATES GYPSUM CO — 1/2 in. Type C, IP-X2, IPC-AR or WRC, 5/8 in. Type AR, IP-AR, IP-X1, SCX or ULIX


    USG BORAL DRYWALL SFZ LLC — 1/2 in. Type C; 5/8 in. Type SCX


    USG MEXICO S A DE C V — 1/2 in. Type C, IP-X2, IPC-AR or WRC; 5/8 in. Type AR, IP-AR, IP-X1 or SCX


    5A. Gypsum Board* — (As an alternate to Item 5) — Nom 3/4 in. thick, 4 ft wide, installed as described in Item 5 with screw length increased to 1-1/4 in.

    CGC INC — Types AR, IP-AR


    UNITED STATES GYPSUM CO — Types AR, IP-AR


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


    5B. Gypsum Board* — (As an alternate to Item 5, not for use with Items 1B and 2B) — Nom. 5/8 in. thick gypsum panels with beveled, square or tapered edges installed as described in Item 5.

    CGC INC — Type ULX


    UNITED STATES GYPSUM CO — Type ULX


    USG MEXICO S A DE C V — Type ULX


    6. Joint Tape and Compound — Vinyl, dry or premixed joint compound, applied to joints and screw heads; paper tape, 2 in. wide, embedded in first layer of compound over all joints. As an alternate, nom 3/32 in. thick gypsum veneer plaster may be applied to the entire surface of Classified veneer baseboard. Joints reinforced.
    7. Caulking and Sealants* — (Optional, Not Shown) — A bead of acoustical sealant applied around the partition perimeter for sound control.

    UNITED STATES GYPSUM CO — Type AS.


    8. Wall and Partition Facings and Accessories* — (Optional, Not Shown) — Nominal 1/2 in. thick, 4 ft wide panels, for optional use as an additional layer on one or both sides of the assembly. Panels attached in accordance with manufacturer's recommendations. When the QR-500 or QR-510 panel is installed between the steel framing and the UL Classified gypsum board, 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.

    PABCO BUILDING PRODUCTS L L C, DBA PABCO GYPSUM — Type QuietRock QR-500 and QR-510


    * 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 2018-09-27
BXUV.U451 U451 BXUV 923830002 DESIGN Active 20180927 20180927 100039004 980447001 P1823606 100567625 100570268 100530754 100557430 100593062 100581840 100512119 100512119 980447001 P1087387 909238002 P1369631 100039004 980447001 P1823606 100567625 100570268 100530754 100557430 100593062 100581840 100512119 100512119 909238002 P1369631 114328003 100238497 100099348 P1642614 100057537 P1798035 324198001 100562937 283066001 100219806 846414005 294450001 299592001 923830002 923830002 100046076 544217001 100572141 100584219 730408054 P1802957 287840003 846414005 730408054 287840003 846414005 730408054 287840003 730408054 100046076

Design/System/Construction/Assembly Usage Disclaimer

  • Authorities Having Jurisdiction should be consulted in all cases as to the particular requirements covering the installation and use of UL Certified products, equipment, system, devices, and materials.
  • Authorities Having Jurisdiction should be consulted before construction.
  • Fire resistance assemblies and products are developed by the design submitter and have been investigated by UL for compliance with applicable requirements. The published information cannot always address every construction nuance encountered in the field.
  • When field issues arise, it is recommended the first contact for assistance be the technical service staff provided by the product manufacturer noted for the design. Users of fire resistance assemblies are advised to consult the general Guide Information for each product category and each group of assemblies. The Guide Information includes specifics concerning alternate materials and alternate methods of construction.
  • Only products which bear UL's Mark are considered Certified.

The appearance of a company's name or product in this database does not in itself assure that products so identified have been manufactured under UL's Follow-Up Service. Only those products bearing the UL Mark should be considered to be Certified and covered under UL's Follow-Up Service. Always look for the Mark on the product.

UL permits the reproduction of the material contained in the Online Certification Directory subject to the following conditions: 1. The Guide Information, Assemblies, Constructions, Designs, Systems, and/or Certifications (files) must be presented in their entirety and in a non-misleading manner, without any manipulation of the data (or drawings). 2. The statement "Reprinted from the Online Certifications Directory with permission from UL" must appear adjacent to the extracted material. In addition, the reprinted material must include a copyright notice in the following format: "© 2018 UL LLC".