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. U460

July 11, 2018

(Exposed to Fire on Interior Face Only)

Bearing Wall Rating — 1 HR.

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. Steel Floor and Ceiling Tracks — (Not Shown) — Top and bottom tracks of wall assemblies shall consist of steel members, min No. 20 MSG (0.0329 in., min bare metal thickness) steel or min No. 20 GSG (0.036 in. thick) galvanized steel or No. 20 MSG (0.033 in. thick) primed steel, that provide a sound structural connection between steel studs, and to adjacent assemblies such as floor, ceiling, and/or other walls. Attached to floor and ceiling assemblies with steel fasteners spaced not greater than 24 in. O.C.
    2. Steel Studs — Corrosion protected steel studs, min 3-1/2 in. wide, min No. 20 MSG (0.0329 in., min bare metal thickness) steel or min No. 20 GSG (0.036 in. thick) galvanized steel or No. 20 MSG (0.033 in. thick) primed steel, cold formed, shall be designed in accordance with the current edition of the Specification for the Design of Cold-Formed Steel Structural Members by the American Iron and Steel Institute (AISI). All design details enhancing the structural integrity of the wall assembly, including the axial design load of the studs, shall be as specified by the steel stud designer and/or producer, and shall meet the requirements of all applicable local code agencies. The max stud spacing of wall assemblies shall not exceed 24 in. Studs attached to floor and ceiling tracks with 1/2 in. long Type S-12 steel screws on both sides of studs or by welded or bolted connections designed in accordance with the AISI specifications.
    3. Lateral Support Members — (Not Shown) — Where required for lateral support of studs, support may be provided by means of steel straps, channels or other similar means as specified in the design of a particular steel stud wall system.
    4. Gypsum Board* — Any 5/8 in. thick UL Classified Gypsum Board that is eligible for use in Design Nos. L501, G512 or U305. Nom. 5/8 in. thick (min) gypsum board applied vertically with Type S-12 steel screws, spaced 8 in. OC at edges and joints and 12 in. OC at field.

    ACADIA DRYWALL SUPPLIES LTD (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


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


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

    PABCO BUILDING PRODUCTS L L C, DBA PABCO GYPSUM — Type QuietRock ES.


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

    PABCO BUILDING PRODUCTS L L C, DBA PABCO GYPSUM — Type QuietRock 527.


    4C. Gypsum Board* — (As an alternate to 5/8 in. Type FSW in Item 4) - 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 4, spaced 24 in. OC. Outer layer attached per Item 4.

    NATIONAL GYPSUM CO — Type FSW.


    4D. Gypsum Board* — (As an alternate to Item 4. For use with Item 6F) — Any 5/8 in. thick, 4 ft. wide, Gypsum Board UL Classified for Fire Resistance (CKNX) eligible for use in Design Nos. U305 and L501 or G512. Applied vertically, and screwed to panels with 1 in. long Type S or S-12 steel screws at 8 in. OC at perimeter and in the field with the last two screws 4 and 3/4 in. from the edges of the board. Wallboard joints covered with paper tape and joint compound. Screw heads covered with joint compound.
    5. Gypsum Sheathing and Exterior Facings — For exterior of wall 5/8 in. thick (min) exterior regular gypsum sheathing applied vertically and attached to studs and runner tracks with 1 in. long Type S-12 steel screws spaced 12 in. OC along studs and tracks.
    6. Foamed Plastic* — 1 in. thick rigid polystyrene insulation attached to studs with 2 in. long Type S-12 wafer head steel screws.

    ATLAS EPS, DIV OF ATLAS ROOFING CORP — Type ThermalStar


    OWENS CORNING SCIENCE AND TECHNOLOGY, LLC

    DOW CHEMICAL CO

    6A. Foamed Plastic* — (As an alternate to Item 6) - 1 in. thick rigid polyisocyanurate insulation attached to studs with 2 in. long Type S-12 wafer head steel screws.

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


    FIRESTONE BUILDING PRODUCTS CO L L C — "Enverge™ CI Foil Exterior Wall Insulation" and "Enverge™ CI Glass Exterior Wall Insulation"


    RMAX OPERATING L L C — "TSX-8500", "TSX-8510", "Thermasheath-XP", "ECOMAXci", "Thermasheath-3", "Durasheath-3"


    THE DOW CHEMICAL CO — Type Thermax Sheathing, Thermax Light Duty Insulation, Thermax Heavy Duty Insulation, Thermax Metal Building Board, Thermax White Finish Insulation, Thermax ci Exterior Insulation, Thermax XARMOR ci Exterior Insulation, Thermax IH Insulation, Thermax Plus Liner Panel, Thermax Heavy Duty Plus (HDP) and TUFF-R™ ci Insulation


    6B. Foamed Plastic* — (As an alternate to Item 6) - Spray applied, foamed plastic insulation, at a minimum of 1 in. thick.

    NCFI POLYURETHANES — NCFI 11-017, NCFI 11-016, NCFI 11-015


    6C. Foamed Plastic* — (As an alternate to Item 6) 1 in. thick rigid polyisocyanurate insulation attached to studs with 2 in. long Type S-12 wafer head steel screws.

    CARLISLE COATINGS & WATERPROOFING INC — Type R2+ SHEATHE


    HUNTER PANELS — Type Xci-Class A, Xci 286, "Xci CG", "Xci Foil", "Xci NB", "Xci Ply, "Xci CG NH", "Xci Foil NH"


    6D. Foamed Plastic* — (As an alternate to Item 6) - Spray applied, foamed plastic insulation, at a minimum of 1 in. thick.

    BASF CORP — Enertite® NM, Enertite® G, FE178®, Spraytite® 178, Spraytite® 81206, Walltite® 200, Walltite® US and Walltite® US-N, FE137®, FE158®, Spraytite® 158, Spraytite® SP and Spraytite® 81205


    6E. Building Units* — (As an alternate to Item 6), 1 in. thick rigid polyisocyanurate composite insulation attached to studs with 2 in. long Type S-12 wafer head steel screws.

    HUNTER PANELS — "Xci NB" and "Xci Ply


    RMAX OPERATING L L C — "Thermasheath-SI", "ECOBASEci", "ThermaBase-CI" attached to studs with Type S screws long enough to penetrate the studs a minimum of three threads.


    6F. Foamed Plastic* — (As an alternate to Item 6) — Spray applied, foamed plastic insulation, at any thickness from partial fill to completely filling stud cavity.

    SES FOAM INC — SES 2 lb. Spray Foam and Sucraseal 0.5 lb. Spray Foam. For use in Bearing and Non-Load Bearing Walls.


    6G. Foamed Plastic* — (As an alternate to Item 6 - Not Shown) — Expanded polystyrene insulation installed to a maximum nominal density of 2.0 lb/ft2.

    BASF CORP STYRENIC FOAMS DIV — — Type Neopor "F" Series


    7. Plywood Sheathing (Sliding) — Min 1/2 in. thick plywood applied vertically with vertical joints located over studs. Fastened to studs with 2-5/8 in. Type S-12 steel screws spaced 12 in. OC. at edges, joints and field.
    8. Batts and Blankets* — Min 3-1/2 in. mineral wool batts placed to fill cavity of wall.
    8A. Fiber, Sprayed* — As an alternate to Batts and Blankets (Item 8) — (100% Borate Formulation) — 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 C — INS735 & INS745 for use with wet or dry application. INS765LD and INS770LD are to be used for dry application only.


    8B. Fiber, Sprayed* — As an alternate to Batts and Blankets (Item 8) - 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 CORP — Celbar-RL


    * 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 2018-07-11
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