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// CODE SNIPPET

[BS] A106.3.2.1 Multiwythe Solid Brick

Existing Building Code 2015 of Idaho > A1 Seismic Strengthening Provisions for Unreinforced Masonry Bearing Wall Buildings > A106 Materials Requirements > A106.3 Existing Unreinforced Masonry > A106.3.2 Lay-Up of Walls > A106.3.2.1 Multiwythe Solid Brick
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The facing and backing shall be bonded so that not less than 10 percent of the exposed face area is composed of solid headers extending not less than 4 inches (102 mm) into the backing. The clear distance between adjacent full-length headers shall not exceed 24 inches (610 mm) vertically or horizontally. Where the backing consists of two or more wythes, the headers shall extend not less than 4 inches (102 mm) into the most distant wythe, or the backing wythes shall be bonded together with separate headers with their area and spacing conforming to the foregoing. Wythes of walls not bonded as described above shall be considered veneer. Veneer wythes shall not be included in the effective thickness used in calculating the height-to-thickness ratio and the shear capacity of the wall.
Exception: Where SD1 is not more than 0.3, veneer wythes anchored as specified in the building code and made composite with backup masonry may be used for calculation of the effective thickness.

Related Code Sections


A106.3.2.1 Seismic Strengthening Provisions for Unreinforced Masonry Bearing Wall Buildings, Multiwythe Solid Brick
The facing and backing shall be bonded so that not less than 10 percent of the exposed face area is composed of solid headers extending not less than ...
Existing Building Code 2015 of Idaho > A1 Seismic Strengthening Provisions for Unreinforced Masonry Bearing Wall Buildings > A106 Materials Requirements > A106.3 Existing Unreinforced Masonry > A106.3.2 Lay-Up of Walls > A106.3.2.1 Multiwythe Solid Brick
722.4.2 Fire and Smoke Protection Features, Multiwythe Walls
The fire-resistance rating for walls or partitions consisting of two or more dissimilar wythes shall be permitted to be determined by the formula ...
Building Code 2018 of Idaho > 7 Fire and Smoke Protection Features > 722 Calculated Fire Resistance > 722.4 Clay Brick and Tile Masonry > 722.4.2 Multiwythe Walls
722.4.2 Fire and Smoke Protection Features, Multiwythe Walls
The fire-resistance rating for walls or partitions consisting of two or more dissimilar wythes shall be permitted to be determined by the formula ...
Building Code 2015 of Idaho > 7 Fire and Smoke Protection Features > 722 Calculated Fire Resistance > 722.4 Clay Brick and Tile Masonry > 722.4.2 Multiwythe Walls
722.2.1.2 Fire and Smoke Protection Features, Multiwythe Walls
For walls that consist of two wythes of different types of concrete, the fire-resistance ratings shall be permitted to be determined from Figure ...
Building Code 2015 of Idaho > 7 Fire and Smoke Protection Features > 722 Calculated Fire Resistance > 722.2 Concrete Assemblies > 722.2.1 Concrete Walls > 722.2.1.2 Multiwythe Walls
722.3.3 Fire and Smoke Protection Features, Multiwythe Masonry Walls
The fire-resistance rating of wall assemblies constructed of multiple wythes of masonry materials shall be permitted to be based on the fire ...
Building Code 2018 of Idaho > 7 Fire and Smoke Protection Features > 722 Calculated Fire Resistance > 722.3 Concrete Masonry > 722.3.3 Multiwythe Masonry Walls
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