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. V304

February 15, 2019

Bearing Wall Rating — 3, 2, 1 Hr

Finish Rating — 88 min (for 3 hour rating)

Loaded Per 2005 NDS Supplement, ASD Method,
Column Braced by Girts, 50% of Design Load Applied to Columns.

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 Columns — 3 Hour Rating - Min. 5-1/2 by 7-1/2 in. wood columns are constructed from min. five (5 ply) 2x6 in. wood studs. The column is constructed by nailing two 2x6 studs together with 10d nails spaced 6 in. OC. Staggered on opposite sides; then by attaching 2x6 studs to each face with 16d nails spaced 6 in. OC. staggered on opposite sides. Finally one additional 2x6 attached to one side of the column with 16d nails spaced 6 in. OC. staggered between to accommodate fasteners beneath. The columns are spaced a max 96 in. OC. The columns are orientated so that the nominal 2 in. side of each member is perpendicular to the horizontal girts.

    1 Hour and 2 Hour Rating Not Shown - Min. 5-1/2 by 6 in. wood columns are constructed from min. four (4 ply) 2x6 in. wood studs. The column is constructed by nailing two 2x6 studs together with 10d nails spaced 6 in. OC. Staggered on opposite sides; then finished by attaching 2x6 studs to each face with 16d nails spaced 6 in. OC. staggered on opposite sides. The columns are spaced a max 96 in. OC. The columns are orientated so that the nominal 2 in. side of each member is perpendicular to the horizontal girts.

    2. Wood Girts — Nominal 2 in. by 4 in. girts are applied horizontally to the face of the columns at 16 in. on center. The girts are applied with two 16d nails per column. The joints are aligned on the vertical center of the columns.
    3. Wood Blocking — Blocking is vertically applied to the column face between each girt. The intermediate blocking is applied with four 16d, equally spaced, nails per location. Blocking for the 5-ply column should be nominal 2x8 in. lumber and blocking for a 4-ply column should be nominal 2x6 in. lumber.
    4. Gypsum Board* — For 3 Hr Rating - Three layers of nom. 48 in. wide by 5/8 in. thick gypsum board applied horizontally. Joints in adjacent layers are staggered a min. 16 in. Gypsum board secured to the wood girts as follows: First layer fastened with 2 in. long Type W coarse threaded screws spaced max 24 in. OC. along the horizontal edge and max 8 in. OC. along the vertical edge to the columns. Second layer fastened with 2-1/2 in. long Type W coarse threaded screws spaced max 24 in. OC with a 2-1/2 in. offset from base layer screws. Third layer fastened with 3 in. Type W coarse threaded screws spaced max 12 in. OC and 8 in. OC along the vertical edges with a 3 in. offset from the 2nd layer fasteners. For 2 Hr Rating - Three layers of nom. 48 in. wide by 5/8 in. thick gypsum board applied horizontally. First layer fastened with 2 in. long Type W coarse threaded screws spaced max 24 in. OC. along the horizontal edge and max 8 in. OC. along the vertical edge to the columns. Second layer fastened with 2-1/2 in. long Type W coarse threaded screws spaced max 24 in. OC. Third layer fastened with 3 in. Type W coarse threaded screws spaced max 24 in. OC. All screws are offset min. 6 in. from adjacent layers. For 1 Hr Rating -Two layers of nom. 48 in. wide by 5/8 in. thick gypsum board applied horizontally. First layer fastened with 2 in. long Type W coarse threaded screws spaced max 12 in. OC. along the horizontal edge and max 8 in. OC. along the vertical edge to the columns. Second layer fastened with 2-1/2 in. long Type W coarse threaded screws spaced max 12 in. OC. All screws are offset min. 6 in. from adjacent layers.

    ACADIA DRYWALL SUPPLIES LTD — Type X, 5/8 Type X, Moisture Resistant Type X, Gypsum Sheathing Type X, Mold & Mildew Resistant Type X and Mold & Mildew Resistant AR Type X, Type Blueglass Exterior Sheathing


    AMERICAN GYPSUM CO — Types AGX-1, M-Glass, AGX-11, AGX-12, LightRoc, or AG-C


    CERTAINTEED GYPSUM INC — Type 1, Type SF3, or FRPC, Type C, , Type X-2, Type X, Type X-1, Easi-Lite Type X-2, Type EGRG, GlasRoc, or GlasRoc-2


    CONTINENTAL BUILDING PRODUCTS OPERATING CO, L L C — Type LGFC6A, Type LGFC2A, Type LGFC-C/A, Type LGFC-WD, Type LGLLX


    GEORGIA-PACIFIC GYPSUM L L C — Type 5, Type 6, Type 9, Type C, Type DGG, Type GPFS1, Type GPFS2, Type GPFS6, Type DS, Type DAP, Type DD, Type DA, Type DAPC, Type LS, Type X, Veneer Plaster Base - Type X, Water Rated - Type X, Sheathing - Type X, Soffit - Type X, Type TG-C, 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 CO — Type eXP-C, FSK, Type FSK-G, Type FSW, Type FSW-2, Type FSW-3, Type FSW-5, Type FSW-G, Type FSK-C, Type FSW-C, Type FSMR-C, Type FSW-6, Type FSW-8, Type FSL


    PABCO BUILDING PRODUCTS L L C, DBA PABCO GYPSUM — Types C, PG-2, PG-3, Types PG-3W, PG-5W, Type PG-4, Type PG-6, Types PG-3WS, PG-5WS, PGS-WRS, Types PG-5, PG-9, PG-11 or Type PG-C


    UNITED STATES GYPSUM CO — Type AR, Type C, Type FRX-G, Type IP-AR, Type IPC-AR, Type IP-X1, Type IP-X2, Type SHX, Type SCX, Type SGX, Type ULIX, Type ULX, Type WRX, Type WRC


    USG BORAL DRYWALL SFZ LLC — Types C, SCX, SGX


    5. Batts and Blankets* — (Optional - Not Shown) — Any glass fiber or mineral wool batt material bearing the UL Classification Marking as to Fire Resistance, of a thickness to partially or completely fill stud cavity.

    See Batts and Blankets* (BZJZ) category for names of Classified companies.

    6. Joint Compound and Tape — (Optional - Not Shown) — Joints may or may not be covered with joint compound and paper or mesh tape. Fastener heads may or may not be covered with one layer of joint compound.

    * 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 2019-02-15
BXUV.V304 V304 BXUV 100571300 DESIGN Active 20190215 20190215 100562937 283066001 100219806 294450001 299592001 923830002 100046076 730408054 P1802957

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