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. U204

October 10, 2017

Nonbearing Wall Rating — 4 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 — Nominal 2 by 4 in. spaced 16 in. OC.
    2. Gypsum Board* — Any 5/8 in. thick UL Classified Gypsum Board that is eligible for use in Design Nos. L501, G512 or U305. Nom 5/8 in. thick wallboard applied horizontally or vertically, with beveled, square or tapered edges. Wallboard attached to studs with 1-5/8 in. long type W bugle head drywall screws spaced vertically 24 in. OC and approximately 3/4 in. from edge of wallboard.

    ACADIA DRYWALL SUPPLIES LTD (View Classification) — CKNX.R25370


    AMERICAN GYPSUM CO (View Classification) — CKNX.R14196


    BEIJING NEW BUILDING MATERIALS PUBLIC LTD CO (View Classification) — CKNX.R19374


    CERTAINTEED GYPSUM INC (View Classification) — CKNX.R3660


    CGC INC (View Classification) — CKNX.R19751


    CONTINENTAL BUILDING PRODUCTS OPERATING CO, L L C (View Classification) — CKNX.R18482


    GEORGIA-PACIFIC GYPSUM L L C (View Classification) — CKNX.R2717


    LOADMASTER SYSTEMS INC (View Classification) — CKNX.R11809


    NATIONAL GYPSUM CO (View Classification) — CKNX.R3501


    PABCO BUILDING PRODUCTS L L C, DBA PABCO GYPSUM (View Classification) — CKNX.R7094


    PANEL REY S A (View Classification) — CKNX.R21796


    SIAM GYPSUM INDUSTRY (SARABURI) CO LTD (View Classification) — CKNX.R19262


    THAI GYPSUM PRODUCTS PCL (View Classification) — CKNX.R27517


    UNITED STATES GYPSUM CO (View Classification) — CKNX.R1319


    USG BORAL DRYWALL SFZ LLC (View Classification) — CKNX.R38438


    USG MEXICO S A DE C V (View Classification) — CKNX.R16089


    2A. Gypsum Board* — (As an alternate to Item 2) — Nominal 5/8 in. thick, 4 ft wide panels, applied vertically only and secured as described in Item 2.

    PABCO BUILDING PRODUCTS L L C, DBA PABCO GYPSUM — Type QuietRock ES, Type QuietRock QR-527.


    2B. Gypsum Board* — (As an alternate to Item 2) - 5/8 in. thick, 4 ft. wide, paper surfaced applied vertically or horizontally only and secured as described in Item 2.

    CERTAINTEED GYPSUM INC — Type SilentFX


    2C. Wall and Partition Facings and Accessories* — (As an alternate to Item 2) — Nominal 5/8 in. thick, 4 ft wide panels, applied vertically only and secured as described in Item 2.

    PABCO BUILDING PRODUCTS L L C, DBA PABCO GYPSUM — Type QuietRock QR-527.


    3. Wood particleboard — 1/2 in. thick, 4 ft wide, wood particleboard installed vertically and fastened with 60, 2 in. long cement coated nails, 0.0915 in. diameter shank and 1/4 in. diameter heads spaced vertically 6 in. OC.
    4. Tie rods — Snap tie rods, 0.225 in. diameter spaced horizontally 16 in. OC and vertically 24 in. OC.
    5. Perlite concrete — Minimum 5 in. thick of perlite concrete, 4 to 6 cu ft of Perlite Aggregate* to 94 lb of Portland cement.

    See Perlite Aggregate (CFFX) category for names of manufacturers.

    * 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 2017-10-10
BXUV.U204 U204 BXUV 117111001 DESIGN Active 20171010 20171010 100562937 283066001 736720001 100219806 846414005 294450001 299592001 226521001 923830002 100046076 544217001 798029001 100584219 730408054 P1802957 287840003 100046076 100219806 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: "© 2019 UL LLC".