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. U659

November 06, 2015

Nonbearing Wall Rating - 2 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. Flashing Channels — Channels 8 in.wide with 3 in. flanges fabricated from nominal 16 MSG thick galvanized or aluminum-zinc alloy-coated sheet steel. Fastened to the support with 1/4 in. by 1-3/4 in. anchors spaced 12 in. OC.
    2. Steel Liner — Panels available in nominal 2 ft.-7-1/2 in. widths fabricated from nominal 22 MSG thick galvanized or aluminum-zinc alloy-coated sheet steel. Fastened to flashing channels with 3/4 in. long sheet metal screws spaced 12 in. OC. Interlocking joints of adjacent panels sealed with factory-applied butyl caulking and secured with 3/4 in. long sheet metal screws spaced 12 in. OC. Optionally, butyl tape applied between the steel liner panels and the flashing channels to provide an air barrier.

    or

    2.(b) Wall and Partition Facings — Corrugated or flat panel, available in various profiles and widths, fabricated from 22 MSG thick galvanized or aluminum-zinc alloy coated sheet steel. Fastened to the Z-bar sub-girts with 3/4 in. long sheet metal screws spaced 12 in. OC. Fastened to flashing channels with 3/4 in. long sheet metal screws spaced 16 in. OC. Side lap joints of adjacent panels fastened with 3/4 in. long sheet metal screws spaced 16 in. OC. The top and bottom of exterior cladding are trimmed with cap and drip flashings respectively. Optionally, butyl tape applied between the panels and the flashing channels to provide an air barrier.
    3. Z-Bar Sub-Girts — Notched Z-bars 8 in. wide with 1-3/4 in. flanges fabricated from nominal 18 MSG thick galvanized or aluminum-zinc alloy-coated sheet steel. Spaced a maximum of 5 ft. OC. Fastened to the steel liner panels (item 2a) or wall and partition panels (items 2b or 2c) with 1-1/4 in. long sheet metal screws spaced not more than 8 in. OC.
    4. Ceramic Fibre Blanket — 8 pcf density, 1/2 in. thick, installed to envelop the top surface and both flanged edges of the z-bar sub-girts. Blanket fixed to sub-girts with stick pins spaced 10 in. OC.
    5. Batts and Blankets — (BZJZ). Two layers of mineral wool batts, 24 or 32 in. wide by minimum 4 ft. long by 4 in. thick, designated "Roxul® Firewall 2HR". Mineral Fibre Insulation, minimum density 4.5 pcf, installed with joints staggered a minimum of 12 in. within each layer and between adjacent layers. The overall thickness of the wall may be increased provided the Mineral Fibre Insulation (Item 5) is used to completely fill the wall cavity, and provided the size of the Flashing Channels (Item 1) and Z-Bar Sub-Girts (Item 3) are increased to match the thicker wall.

    ROCKWOOL — Types "Roxul Safe 55"


    * 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 2015-11-06
BXUV.U659 U659 BXUV P1798035 DESIGN Active 20151106 20151106 P1798035

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