How to Specify Concrete Masonry f ’m = 2500 psi in the State of Illinois

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Specify Concrete Masonry Units

The key component for the strength of masonry walls is the blocks, commonly referred to as concrete masonry unit (CMU). CMU can be specified as normal weight, medium weight, or light weight. In Illinois, particularly in the Chicago metro area, the most common CMU is Medium weight. However, both Normal weight and Light weight can also be specified and used.

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