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. U623

October 11, 2017

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. Steel Supports — 3 by 3 by 1/4 in. angles attached at top and bottom with 2 in. long, 3/8 in. diam fasteners 24 in. OC.
    2. Steel Flashings — No. 19 MSG galv steel. Side flashings on liner side are 2 by 3 in. angles. Side and top flashings on facing unit side are 1-1/2 by 1-1/2 in. angles. Bottom flashing on facing unit side is a 3-7/8 by 2-11/16 in. angle. Flashings attached 24 in. OC to liners and facing units with No. 14 by 7/8 in. long hex-washer-head self-tapping steel screws. Flashings attached to adjoining walls, floors and ceilings with No. 14 by 1 in. long steel screws or bolts spaced 24 in. OC. Bottom facing unit flashing may be secured to wall by the fasteners securing the bottom sub-girt.
    3. Wall and Partition Facings and Accessories*— Steel Liner Units — Min 24 MSG, nom 12 in. wide by 1-1/2 in. deep. Attached to top and bottom angles with No. 14 by 1 in. long hex-washer-head self-tapping steel screws, 12 in. OC.

    MORIN CORPTypes L-12-0, L-12-1F, L-12W-1, and L-12-2F.


    4. Reinforcing Channel — (Not Shown) — No. 19 MSG galv steel channel 1-1/2 in. deep, with 1 and 3 in. legs. Used to support free end of last liner unit installed. 1 in. leg attached to liner with the screws securing the flashing angle to the liner units.
    5. Batts and Blankets* — Nom 12 by 48 by 1-1/2. Inserted in liner cavity with end joints occurring at sub-girts.

    JOHNS MANVILLE

    OWENS CORNING

    ROCKWOOLType AFB


    6. Sub-girts — Hat-shaped, 1/2 in. deep, 1-3/8 in. min width, 1/4 in. min leg width, 20 MSG galv steel. Attached along both legs to lips of liner units and to reinforcing channel with No. 14 by 1 in. long hex-washer-head self-tapping steel screws. Spaced 48 in. OC and 3 in. from top and bottom of wall, or when steel studs are used, attached to legs of studs along both sub-girt legs with No. 14 by 7/8 in. long hex-washer-head, self-tapping, self-drilling steel screws.
    7. Gypsum Board* — Any 5/8 in. thick UL Classified Gypsum Board that is eligible for use in Design Nos. L501, G512 or U305. (Three layers) Nom 5/8 in. thick by 48 in. wide sheets applied vertically. Joints between adjacent layers staggered 12 in. vertically and 48 in. horizontally. Horizontal joints to occur at sub-girts. First and second layers attached to each sub-girt with 0.114 in. diam, 1-5/8 in. long bugle-head self-drilling steel screws located 12 in. from vertical joints and 1/2 in. from horizontal joints.

    Third layer attached to first and second layers with 0.13 in. diam. 1-1/2 in. long phillips-head steel wallboard screws spaced 12 in. OC vertically, located 12 in. from vertical joints and 1/2 in. from horizontal joints.

    CABOT MANUFACTURING ULC (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


    SAINT-GOBAIN GYPROC MIDDLE EAST FZE (View Classification)CKNX.R27321


    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 BORAL DRYWALL SFZ LLC (View Classification)CKNX.R38438


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


    7A. Gypsum Board* — (As an alternate to Item 7) — Nominal 5/8 in. thick, 4 ft wide panels, secured as described in Item 7.

    PABCO BUILDING PRODUCTS L L C, DBA PABCO GYPSUMType QuietRock ES


    7B. Wall and Partition Facings and Accessories* — (As an alternate to Items 7 and 7A) — Composite Gypsum Panel — Nominal 5/8 in. thick, 4 ft wide panels, secured as described in Item 7.

    PABCO BUILDING PRODUCTS L L C, DBA PABCO GYPSUMType QuietRock 527


    8. Sub-girts — Same as Item 6. Located in line with the sub-girts on the opposite side and attached through the wallboard to first set of sub-girts with No. 14 by 3 in. long hex-washer-head self-tapping steel screws spaced 24 in. OC.
    9. Wall and Partition Facings and Accessories*— Steel Facing Units — Min 24 MSG, nom 12 to 36 in. wide. Extended lip attached to sub-girts with No. 14 by 7/8 in. long hex-washer-head self-tapping steel screws. The last unit installed is attached to a reinforcing channel with the same screws securing the flashing angle to the facing units.

    MORIN CORPTypes F-12-0, F-12-1, F-12-2, F-12-S/F-12-SW, K-12-0, K-12-1, K-12-2, L-12-0, L-12-1F, L-12W-1, L-12-2F, N-12-0, N-12-2, 0.24W-PROFILE A, R-12-0, R-12-1, R-12-2, T-12-0, T-12-3, V-12, W-12, Y-36-PROFILE A, and Y-36-PROFILE B


    10. Reinforcing Channel — (Not shown) — No. 19 MSG steel channel 1-1/2 in. deep, with 1-1/16 and 2-1/8 in. legs. Used to support the free end of last facing unit installed. Long leg attached to sub-girts with No. 14 by 7/8 in. long hex-washer-head self-tapping steel screws.
    11. Steel Studs — (Not Shown) — Optional — min 3-5/8 in. deep with min 1-1/2 in. legs. No. 18MSG min prime painted steel attached at liner joints to each liner with No. 14 by 7/8 in. long hex-washer head self-tapping, self-drilling steel screws spaced vertically 12 in. 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 2017-10-11
BXUV.U623 U623 BXUV 100219806 DESIGN Active 20171011 20171011 707669001 880051001 334053001 P1798035 100562937 283066001 736720001 100219806 846414005 294450001 299592001 226521001 923830002 100046076 544217001 100572141 798029001 100584219 730408054 P1802957 P1802957 287840003 100046076 100046076 707669001 P1802957

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".