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In addition to load conditions and span requirements, concrete masonry's modular layout should be considered when determining hollow
core slab thickness.
Concrete masonry units typically are manufactured in 75/8" heights. An 8" module is established when concrete masonry is
constructed with a standard 3/8" mortar joint. Concrete masonry may be saw cut to produce units of varying heights. This is a labor intensive procedure which can significantly affect the efficiency
of the masonry construction. Concrete masonry soaps may also be used to keep the coursing.Utilizing 8" thick hollow core slab retains the concrete masonry walls modular layout. The construction of
single wythe walls is now possible because the masonry "courses out" vertically, eliminating any unsightly irregularities in masonry coursing. See drawing to the right.
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