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. U314

July 09, 2018

Bearing Wall Rating — 1 HR.

Finish Rating — 26 Min.

This design was evaluated using a load design method other than the Limit States Design Method (e.g., Working Stress Design Method). For jurisdictions employing the Limit States Design Method, such as Canada, a load restriction factor shall be used — See Guide BXUV or BXUV7

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

    1. Wood Studs — Nom 2 by 4 in., spaced 24 in. OC, effectively fire stopped.
    2. Gypsum Board* — 5/8 in. thick, 24 to 54 in. wide. Gypsum boards nailed to studs and bearing plates 7 in. OC with 6d cement coated nails 1-7/8 in. long, 0.0915 in. shank diam and 1/4 in. diam head. When used in widths other than 48 in., gypsum panels to be installed horizontally.

    CGC INC — Types AR, IP-AR, IP-X1, SCX, SHX, ULX, WRX.


    NATIONAL GYPSUM CO — Riyadh, Saudi Arabia — Type FR, or WR.


    UNITED STATES GYPSUM CO — Type AR, FRX-G, IP-AR, IP-X1, SCX, SHX, ULIX, ULX or WRX.


    USG BORAL DRYWALL SFZ LLC — Type SCX


    USG MEXICO S A DE C V — Type AR, IP-AR, IP-X1, SCX, SHX, ULX, WRX.


    2A. Gypsum Board* — (As an alternate to Item 2) — Nom 3/4 in. thick, 4 ft wide, installed as described in Item 2.

    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.


    2B. Gypsum Board* — (As an alternate to Items 2, 2A) — 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.


    2C. Wall and Partition Facings and Accessories* — (As an alternate to Items 2, 2A, 2B) — 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 527


    3. Joints and Nailheads — Exposed joints covered with joint compound and paper tape. Nailheads covered with joint compound. Joint compound and paper tape may be omitted when square edge boards are used. As an alternate, nom 3/32 in. thick gypsum veneer plaster may be applied to the entire surface of Classified veneer baseboard with the joints reinforced with paper tape.
    4. Steel Corner Fasteners — (Optional) — For use at wall corners. Channel shaped, 2 in. long by 1 in. high on the back side with two 1/8 in. wide cleats protruding into the 5/8 in. wide channel, fabricated from 24 gauge galv steel. Fasteners applied only to the end or cut edge (not along tapered edges) of the wallboard, no greater than 2 in. from corner of wallboard, max spacing 16 in. OC. Nailed to adjacent stud through tab using one No. 6d cement coated nail per fastener. Corners of wallboard shall be nailed to top and bottom plate using No. 6d cement coated nails.
    5. Batts and Blankets* — (Optional, Not Shown) — Mineral wool insulation placed in stud cavities.

    THERMAFIBER INC — Type SAFB, SAFB FF.


    ROCKWOOL — Type SAFEnSOUND


    6. Non-Bearing Wall Partition Intersection — (Optional) Two nominal 2 by 4 in. stud or nominal 2 by 6 in. stud nailed together with two 3in. long 10d nails spaced a max. 16 in. OC. vertically and fastened to one side of the minimum 2 by 4 in. stud with 3 in. long 10d nails spaced a max 16 in. OC. vertically. Intersection between partition wood studs to be flush with the 2 by 4 in. studs. The wall partition wood studs are to be framed by with a second 2 by 4 in. wood stud fastened with 3 in. long 10d nails spaced a max. 16 in. OC. vertically. Maximum one non-bearing wall partition intersection per stud cavity. Non-bearing wall partition stud depth shall be at a minimum equal to the depth of the bearing wall.
    7. Wall and Partition Facings and Accessories* — (Optional, Not Shown) — For use with Item 1, Item 2, Item 3, and Item 5. For maximum fire rating of 1 hour. On one side of the wall, over the first layer of Gypsum Board (Item 2), install RefleXor membrane with the gold side facing outwards. Membrane installed with T50 staples spaced 12 inches on center in both directions as per manufacturer's instructions, seams in membrane to be overlapped by 2 inches. When RefleXor membrane is used an additional layer of Gypsum Board identical to the one used in the first layer and as specified in Item 2 shall be installed over the membrane. The additional layer of Gypsum Board to be installed through the membrane to the stud as specified in Item 2 except the fastener length shall be increased by a minimum of 5/8 inch. Install Batts and blankets in the stud cavity as per Item 5. On the other side of the wall, prior to the installation of the Gypsum Board, install Resilient Channels , 25 MSG galv steel, spaced vertically 24 in. OC, flange portion screw attached to one side of studs with 1-1/4 in. long diamond shaped point, double lead Phillips head steel screws. Over the Resilient Channels install 3/4 inch thick SONOpan panel secured to the Resilient Channels with drywall screws and washers spaced at 16 in. OC on the perimeter of the panel and 8 in. OC in the field of the panel. Over the SONOpan panel install the same Gypsum Board as specified in Item 2 with the fastener length increased by minimum 3/4 inch. Not evaluated or intended as a substitute for the required layer(s) of UL Classified Gypsum Board.

    MSL — RefleXor membrane, SONOpan panel.


    * 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 2018-07-09
BXUV.U314 U314 BXUV 730408054 DESIGN ACTIVE 20180709 20171026 846414005 923830002 730408054 P1802957 287840003 846414005 730408054 287840003 100046076 100046076 324198001 P1798035 P1314313

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