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. V321

June 10, 2019

(Exposed to Fire on Interior Face Only

Bearing Wall Rating — 3/4 Hr

Finish Rating — 16 Min

Loaded Per 2012 NDS Supplement, ASD Method, Wall Braced at Mid-Height.

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 x 4 in. spaced 16 in. OC. Cross braced at midheight and effectively firestopped at top and bottom of wall.
    2. Batts and Blankets* — Unfaced glass fiber batts, min 3-1/2 in. thick, min density of 0.72 pcf, pressure fit in wall cavities between studs and cross bracing.

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

    2A. Fiber, Sprayed* — As an alternate to Batts and Blankets (Item 2) — Spray applied cellulose material. The fiber is applied with water to completely fill the enclosed cavity in accordance with the application instructions supplied with the product with a nominal dry density of 2.7 lb/ft3. Alternate Application Method: The fiber is applied without water or adhesive at a nominal dry density of 3.5 lb/ft3, in accordance with the application instructions supplied with the product.

    U S GREENFIBER L L CINS735 & INS745 for use with wet or dry application. INS510LD, INS515LD, INS541LD, INS735, INS745, INS765LD, and INS770LD are to be used for dry application only.


    2B. Fiber, Sprayed* — As an alternate to Items 2 and 2A - Spray applied cellulose material. The fiber is applied with water to completely fill the enclosed cavity in accordance with the application instructions supplied with the product. Nominal dry density of 4.58 lb/ft3.

    NU-WOOL CO INCCellulose Insulation


    2C. Fiber, Sprayed* — As an alternate to Batts and Blankets (Item 2) - Spray applied cellulose fiber. The fiber is applied with water to completely fill the enclosed cavity in accordance with the application instructions supplied with the product. The minimum dry density shall be 4.30 lbs/ft3.

    INTERNATIONAL CELLULOSE CORPCelbar-RL


    3. Gypsum Board* — 1/2 in. thick with beveled, square or tapered edges, applied either horizontally or vertically. Horizontal joints need not be backed by framing. Horizontal edge joints and horizontal butt joints on opposite sides of studs need not be staggered. Secured to wood studs and plates with 1-3/8 in. long phosphate coated cupped drywall nails spaced 8 in. OC at the perimeter and in the field.

    GEORGIA-PACIFIC GYPSUM L L CType FG


    4. Steel Corner Fasteners — (Optional, Not Shown) — 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. Joints and Nailheads — Interior joints covered with tape and joint compound. Interior nail heads covered with joint compound. Exterior side joints and nail heads uncovered.
    6. Sheathing* — Foamed Plastic — Max 1-1/2 in. thick, 4 ft wide sheathing, with square edges. Sheathing is applied vertically. Sheathing fastened with 3 in. long E. G. roofing nails spaced 8 in. OC along the edges and 12 in. OC in the field.

    ATLAS ROOFING CORP"EnergyShield Pro Wall Insulation", "EnergyShield Pro 2 Wall Insulation", EnergyShield CGF Pro and EnergyShield Ply Pro


    CARLISLE COATINGS & WATERPROOFING INCR2+ SHEATHE


    HUNTER PANELSTypes "Xci-Class A", "Xci 286", "Xci Foil (Class A)", "Xci CG", "Xci Foil", "Xci CG NH", "Xci Foil NH


    RMAX OPERATING L L CTypes "TSX-8500", "ECOMAXci FR", "TSX-8510", "ECOMAX xi FR White", "ECOMAXci", "ECOMAXci FR Air Barrier", "Thermasheath-XP", "Thermasheath", "Durasheath", "Thermasheath-3", "Durasheath-3".


    THE DOW CHEMICAL COTypes Thermax Sheathing, Thermax Light Duty Insulation, Thermax Heavy Duty Insulation, Thermax Metal Building Board, Thermax White Finish Insulation, Thermax ci Exterior Insulation, Thermax XARMOR, Thermax IH Insulation, Thermax Plus Liner Panel and Thermax Heavy Duty Plus (HDP)


    6A. Building Units — As an alternate to Item 6, max. 1-1/2-in thick polyisocyanurate composite foamed plastic insulation boards, nom. 48 by 48 or 96 in., with a facer on one side and with oriented strand board or plywood on the other. Sheathing is applied vertically. Sheathing fastened with 3 in. long E. G. roofing nails spaced 8 in. OC along the edges and 12 in. OC in the field.

    HUNTER PANELSTypes "Xci NB" and "Xci Ply"


    6B. Building Units — As an alternate to Items 4 or 4A, min. 1-in thick polyisocyanurate composite foamed plastic insulation boards, nom. 48 by 48 or 96 in. attached to studs with min. 8d nails or min. 2-1/2 in. long Type W screws.

    RMAX OPERATING L L C"Thermasheath-SI", "ECOBASEci", "ThermaBase-CI", "ECOMAXci FR Ply", "ECOMAXci Ply"


    7. Exterior Wall Coverings — Installed in accordance with the manufacturer's installation instructions.
    7A. Aluminum Siding — 0.019 in. min thick painted aluminum meeting AAMA 1402. Fastened over foam plastic sheathing to wood studs.
    7B. Steel Siding — 0.017 in. min thick (No. 17 GSG gauge) painted steel. Fastened over foam plastic sheathing to wood studs.
    7C. Vinyl Siding — 0.035 in. min thick vinyl, UL Classified exterior plastic siding (Molded Plastic). Fastened over foam plastic sheathing to wood studs.
    7D. Wood Siding — 0.313 in. min thick lumber, plywood or OSB wood based siding. Fastened over foam plastic sheathing to wood studs.
    7E. Hard board Siding — 0.250 in. min thick hard board UL Classified exterior hard board siding (Hard board). Fastened over foam plastic sheathing to wood studs.
    7F. Fiber-Cement Siding — 0.250 in. min thick fiber-cement based siding. Fastened over foam plastic sheathing to wood studs.
    7G. Stone — 2.0 in. min (natural stone) or 1.5 min (cast artificial) thick stone. Fastened over foam plastic sheathing to wood studs.
    7H. Brick Veneer — 2.0 in. min thick brick units. Fastened over foam plastic sheathing to wood studs with metal ties.
    7I. Concrete Masonry Veneer — 2.0 in. min thick concrete masonry units. Fastened over foam plastic sheathing to wood studs with metal ties.
    7J. Stucco — Portland cement type — 0.750 in. min thickness. Metal lath or mesh base fastened over foam plastic sheathing to wood studs.
    7K. One-Coat Stucco — 0.375 in. min thickness. Wire fabric lath fastened over foam plastic sheathing to wood studs.
    7L. Exterior Insulation and Finish System (EIFS) — Base coat with reinforcing mesh applied over foam plastic sheathing (Quik-R Wall Insulation) followed by finish coat. Type Quik-R Sheathing (Item 6) must be used for this exterior wall covering.
    7M. Wall and Partition Facing and Accessories — (Not Shown) — Installed in accordance with the manufacturer's installation instructions. Min. 0.25 in. (6 mm) thick panel fastened to the exterior surface.

    KEENE BUILDING PRODUCTS CO INCTypes Driwall Rainscreen 020, Driwall Rainscreen 10 and CAV-AIR-ATOR


    * 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 2019-06-10
BXUV.V321 V321 BXUV 299592001 DESIGN Active 20190610 20190610 184866001 882208001 979414001 299592001 918709005 135980003 100279001 650447001 629502067 100279001 650447001 100057537

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