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  1. fredneck

    help identify cmu-based floor system

    Just encountered floor system of telephone swithcing facility utilizing 4" thick 24" wide x 12" long CMU blocks which have 3 ribs containing a minimum of (1) #4 continuous in groutd holes in each rib. Couldn't tell if any prestressing present. CMU has 2" concrete topping over it. Floor spans are...

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