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. U919

October 08, 2018

Bearing Wall Rating — 2-1/2, 3 and 4 Hr (See Items 1 and 4)

Nonbearing Wall Rating — 2, 2-1/2, 3 and 4 Hr (See Items 1 and 4)

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. Precast Autoclaved Aerated Concrete Blocks — Min 4 in. thick by min 7-7/8 in. high by min 23-5/8 in. long blocks for use in 4 hr nonbearing wall assemblies. Min 6 in. thick by min 7-7/8 in. high by min 23-5/8 in. long blocks for use in 4 hr bearing wall assemblies. Min 3 in. thick by min 7-7/8 in. high by min 23-5/8 in. long blocks for use in 2 hr nonbearing wall assemblies. See Item 4 for minimum block thickness when cores are present.

    AERCON FLORIDA L L C — AC-2, AC-4, AC-6


    XELLA MEXICANA S A DE C V — AAC -2 , AAC-4, AAC-6


    2. Thin Bed Mortar — Blocks laid in a ANSI A118.4 Latex/Portland cement thin bed mortar installed with vertical joints staggered. Thin bed mortar is optional in 8 in. thick blocks with tongue and groove joints for nonbearing walls.
    3. Precast Autoclaved Aerated Concrete Lintel (Not Shown)* — Min 6 in. thick lintel for use in bearing and nonbearing wall assemblies.

    AERCON FLORIDA L L C

    XELLA MEXICANA S A DE C V

    4. Core — (Optional) As an option, the blocks may have one or two cores as specified below with a max. #7 (7/8 in.) rebar and filled with ASTM C404 grout. Where two cores are specified, the minimum distance from center to center of the cores shall be twice the core diameter.
    Maximum
    Core
    Diameter
    Maximum
    Number of
    Cores per
    Block
    Minimum
    Block
    Thickness
    Bearing
    Wall Rating,
    Hr
    Nonbearing
    Wall Rating, Hr
    4 in. 2 8 in. 4 4
    4 in. 2 7 in 3 3
    3.54 in. (90 mm) 2 6 in. 2-1/2 2-1/2

    * 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 2018-10-08
BXUV.U919 U919 BXUV 658073001 DESIGN Active 20181008 20181008 658073001 394394001 658073001 394394001 658073001

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