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. U205

January 06, 2011

Nonbearing Wall Rating - 4 Hr

Bearing Wall Rating - 2 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. Floor and Ceiling Runners — (Not Shown) Channel shaped, fabricated from min 0.0329 in. thick No. 20 gauge corrosion-protected steel, that provide a sound structural connection between steel studs and 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. OC.
    2. Steel Studs — Corrosion protected steel studs, min 2-5/8 in. wide, min No. 20 MSG (0.0329 in. thick), cold formed, 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. The max stud spacing of wall assemblies shall not exceed 24 in. OC. Studs attached to floor and ceiling runners with 1/2 in. long Type S-12 pan head, self-drilling, self-tapping steel screws on both sides of the studs or by welded or bolted connections designed in accordance with AISI specifications.
    2A. Wood Studs — As an alternate to Item 2, nom 2 by 4 in., spaced 16 in. or 24 in. OC. Studs cross braced at mid-height and effectively firestopped at the top and bottom.
    3. Precast Autoclaved Aerated Concrete Panels* — Min 2 in. thick and max 2 ft wide panels fastened to the steel studs with 2-1/4 in. long Type S3 hex head type self-drilling, self-tapping screws. Minimum 2 fasteners per panel at each stud spaced a maximum of 2 in. from the panel edge.

    AERCON FLORIDA L L C

    XELLA MEXICANA S A DE C V

    4. Thin Bed Mortar — Applied to the joints of each panel.

    * 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 2011-01-06
BXUV.U205 U205 BXUV 658073001 DESIGN Active 20110106 20110106 658073001 394394001 658073001

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