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. U442

April 15, 2019

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, 2-1/2 in. or 3-5/8 in. wide (See Item 3) by 1-1/4 in. deep with 3/16 in. folded back return flange legs. Fabricated from No. 20 MSG (0.0329 in., min. bare metal thickness) galv steel. Max stud spacing 16 in. OC. Studs to be cut 3/8 to 3/4 in. less than assembly height.
    2. Floor and Ceiling Runners — (Not Shown) — Channel shaped runners, 2-1/2 in. or 3-5/8 in. wide (See Item 3) by 1-1/4 in. deep, fabricated from No. 20 MSG (0.0329 in., min. bare metal thickness) galv steel. Attached to floor and ceiling with fasteners, 24 in. OC max.
    3. Cementitious Backer Units* — 1/2 or 5/8 in. thick, applied vertically or horizontally with vertical joints centered over studs and staggered one stud cavity on opposite sides of studs. Horizontal joints need not be backed by framing. When cementitious backer units are installed on both sides of the wall minimum 3-5/8 in. steel studs and floor and ceiling runners are required. Fastened to studs and bottom runners with the uppermost screws palced 1/2 in. to 2 in. below the bottom edge of the leg of the top runner with corrosion resistant 1-1/4 in. long chamfered, ribbed wafer head screws with a minimum head diameter of .400 inch, spaced 8 in. OC. Joints covered with glass fiber mesh tape and latex modified portland cement mortar or Type I organic adhesive.

    UNITED STATES GYPSUM COType DCB


    4. Batts and Blankets* — Min 2-1/2 in. thick mineral wool insulation batts, friction-fitted between 2-1/2 in. studs. Min 3 in. thick mineral wool insulation batts, friction-fitted between 3-5/8 in. studs.

    ROCKWOOLType AFB


    THERMAFIBER INCType SAFB, SAFB FF.


    5. Bond Coat for Setting Tile — Latex modified portland cement mortar or .1 Type I organic adhesive applied with a notched trowel.
    6. Ceramic Tile — 1/4 in. thick, joints filled with grout.
    7. Gypsum Board* — 5/8 in. thick with square or tapered edges, applied vertically with vertical joints centered over studs and staggered one stud cavity on opposite sides of studs. Fastened with 1 in. long, Type S-12 screws spaced 8 in. OC along the vertical edges and 12 in. OC in the field, and fastened to runners with screws spaced 8 in. OC.

    ACADIA DRYWALL SUPPLIES LTDType X, 5/8 Type X, Type Blueglass Exterior Sheathing


    AMERICAN GYPSUM COType AGX-1, M-Glass, AG-C, LightRoc.


    BEIJING NEW BUILDING MATERIALS PUBLIC LTD COType DBX-1.


    CGC INCType AR, C, IP-AR, IP-X1, IP-X2, IPC-AR, SCX, SHX, ULX, USGX, WRC, WRX (Joint tape and compound, Item 8, optional for use with Type USGX).


    CERTAINTEED GYPSUM INCTypes EGRG, GlasRoc, GlasRoc-2, Type X, Type X-1, Easi-Lite Type X-2, Type C, , SilentFX, 5/8" Easi-Lite Type X.


    CONTINENTAL BUILDING PRODUCTS OPERATING CO, L L CTypes LGFC2A, LGFC6A, LGFC-C/A, LGFC-WD, LGLLX, CLLX.


    GEORGIA-PACIFIC GYPSUM L L CTypes 5, 6, 9, C, DA, DAP, DAPC, DGG, DS, GPFS6, LS, TG-C, Type X, Veneer Plaster Base-Type X, Water Rated-Type X, Sheathing Type-X, Soffit-Type X, GreenGlass Type X, Type X ComfortGuard Sound Deadening Gypsum Board, Type LWX, Veneer Plaster Base-Type LWX, Water Rated-Type LWX, Sheathing Type-LWX, Soffit-Type LWX, Type DGLW, Water Rated-Type DGLW, Sheathing Type- DGLW, Soffit-Type DGLW, Type LW2X, Veneer Plaster Base - Type LW2X, Water Rated - Type LW2X, Sheathing - Type LW2X, Soffit - Type LW2X, Type DGL2W, Water Rated - Type DGL2W, Sheathing - Type DGL2W.


    NATIONAL GYPSUM CORiyadh, Saudi Arabia — Type FR, or WR.


    NATIONAL GYPSUM COTypes FSK, FSMR-C, FSW, FSW-3, FSW-6, FSW-8, FSL.


    PABCO BUILDING PRODUCTS L L C, DBA PABCO GYPSUMTypes C, PG-9, PG-11, PGS-WRS.


    PANEL REY S A Types GREX, PRX, RHX, MDX, ETX.


    SAINT-GOBAIN GYPROC MIDDLE EAST FZEType 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


    SIAM GYPSUM INDUSTRY (SARABURI) CO LTDType EX-1


    THAI GYPSUM PRODUCTS PCLType X, Type C.


    UNITED STATES GYPSUM COType AR, C, FRX-G, IP-AR, IP-X1, IP-X2, IPC-AR, SCX, SHX, ULIX, ULX, WRC, WRX, USGX (Joint tape and compound, Item 8, optional for use with Type USGX).


    USG BORAL DRYWALL SFZ LLCTypes C, SCX, USGX (Joint tape and compound, Item 8, optional for use with Type USGX)


    USG MEXICO S A DE C VType AR, C, IP-AR, IP-X1, IP-X2, IPC-AR, SCX, SHX, ULX, USGX, WRC, WRX (Joint tape and compound, Item 8, optional for use with Type USGX).


    7A. Gypsum Board* — (As an alternate to Item 7) — 5/8 in. thick with square or tapered edges, applied vertically or horizontally with vertical joints centered over studs. Horizontal edge joints and horizontal butt joints need not be staggered on opposite faces or backed by steel framing. For horizontal application, fastened to studs and floor runners with 1 in. long Type S- screws spaced 8 in. OC. For vertical application, fastened to studs with 1 in. long, Type S- screws spaced 8 in. OC along the vertical edges and 12 in. OC in the field, and fastened to the floor runners with screws spaced 8 in. OC. When used in widths other than 48 in., gypsum panels to be installed horizontally.

    CERTAINTEED GYPSUM INCType X, Type X-1, Easi-Lite Type X-2, Type C, Type SilentFX.


    CGC INCType AR, C, IP-AR, IP-X1, IP-X2, IPC-AR, SCX, SHX, ULX, USGX, WRC, WRX (Joint tape and compound, Item 8, optional for use with Type USGX).


    THAI GYPSUM PRODUCTS PCLType X, Type C.


    UNITED STATES GYPSUM COType AR, C, FRX-G, IP-AR, IP-X1, IP-X2, IPC-AR, SCX, SHX, ULIX, ULX, USGX, WRC, WRX (Joint tape and compound, Item 8, optional for use with Type USGX).


    USG BORAL DRYWALL SFZ LLCTypes C, SCX, USGX


    USG MEXICO S A DE C VType AR, C, IP-AR, IP-X1, IP-X2, IPC-AR, SCX, SHX, ULX, USGX, WRC, WRX (Joint tape and compound, Item 8, optional for use with Type USGX).


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

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


    7C. Gypsum Board* — (As an alternate to 5/8 in. Type FSW in Item 7) - 2 layers nom. 5/16 in. thick gypsum panels applied vertically. Horizontal joints on the same side need not be staggered. Inner layer attached with fasteners, as described in item 7, spaced 24 in. OC. Outer layer attached per Item 7.

    NATIONAL GYPSUM COType FSW.


    7D. Wall and Partition Facings and Accessories* — (As an alternate to Items 7 through 7BA) — Nominal 5/8 in. thick, 4 ft wide panels, applied vertically and secured as described in Item 7.

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


    8. Joints — When taper edge gypsum board is used, joints covered with paper tape and joint compound. As an alternate, gypsum veneer plaster may be applied to the entire surface of Classified veneer baseboard with joints reinforced. When square-edge gypsum panels are used used, treatment of joints is optional.
    9. Vapor Retarder, Water Barrier or Weather Resistive Barrier — (Optional — Not Shown) — As required.

    * 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 2019-04-15
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