FIRE-RESISTANCE DESIGN

Assembly Usage Disclaimer

BXUVC - Fire-resistance Ratings


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Design No. W611

March 25, 2019

Assembly Rating - 2 h

    Nonbearing Wall

    1. Flashing Channels — Channels 200 mm wide with 76 mm flanges fabricated from nominal 1.52 mm thick galvanized or aluminum-zinc alloy-coated sheet steel. Fastened to the support with 6.4 mm by 41 mm anchors spaced 305 mm OC.
    2.(a) Steel Liner — Panels available in nominal 800 mm widths fabricated from nominal 0.76 mm thick galvanized or aluminum-zinc alloy-coated sheet steel. Fastened to flashing channels with 19 mm long sheet metal screws spaced 305 mm OC. Interlocking joints of adjacent panels sealed with factory-applied butyl caulking and secured with 19 mm long sheet metal screws spaced 305 mm 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 and Accessories — (CLBVC). Type L-800 panels of nominal 0.76 mm thickness. Fastened to flashing channels with 19 mm long sheet metal screws spaced 305 mm OC. Interlocking joints of adjacent panels sealed with factory-applied butyl caulking and secured with 19 mm long sheet metal screws spaced 305 mm OC. Optionally, butyl tape applied between the panels and the flashing channels to provide an air barrier.

    or

    2.(c) Wall and Partition Facings — Corrugated or flat panel, available in various profiles and widths, fabricated from 0.76 mm thick galvanized or aluminum-zinc alloy coated sheet steel. Fastened to the Z-bar sub-girts with 19 mm long sheet metal screws spaced 305 mm OC. Fastened to flashing channels with 19 mm long sheet metal screws spaced 406 mm OC. Side lap joints of adjacent panels fastened with 19 mm long sheet metal screws spaced 406 mm 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 200 mm wide with 45 mm flanges fabricated from nominal 1.22 mm thick galvanized or aluminum-zinc alloy-coated sheet steel. Spaced a maximum of 1525 mm OC. Fastened to the steel liner panels (item 2a) or wall and partition panels (items 2b or 2c) with 32 mm long sheet metal screws spaced not more than 200 mm OC.
    4. Ceramic Fibre Blanket — 128 kg/m3 density, 13 mm 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 250 mm OC.
    5. Batts and Blankets — (BZJZC). Two layers of mineral wool batts, 610 or 813 mm wide by minimum 1220 mm long by 102 mm thick, designated "Roxul® Firewall 2HR". Mineral Fibre Insulation, minimum density 72 kg/m3, installed with joints staggered a minimum of 300 mm 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"


Last Updated on 2019-03-25
BXUVC.W611 W611 BXUVC P1798035 DESIGN Active 20190325 20190325 P1798035

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