NCMA TEK

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ncma TEK. National Concrete Masonry Association an information series from the national authority on concrete masonry technology CRACK control FOR CONCRETE BRICK AND TEK 10-4. Movement control (2001). OTHER CONCRETE MASONRY VENEERS. brick units or half-high concrete masonry units, as shown Keywords: concrete brick, control joints, crack control , joint reinforcement, shrinkage, veneer in Figure 1. Concrete brick units most commonly have a nominal thickness of 4 in. (102 mm), lengths of 8, 10, 12 or 16 in. (203, 254, 305 or 406 mm) and heights from 2 1/2 to 6 in. INTRODUCTION (64 to 152 mm). The specified size of a concrete brick is typically 3 5/ 8 x 2 1/4 x 7 5/ 8 in.

Recommended control joint locations and located where stress concentrations are likely to cause cracks. The joints allow unrestrained longitudinal movement,

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