Structural · IRC 2021 §R506.1 / §R506.2 / §R506.2.3
Slab-on-Ground Floor Section
Slab-on-ground section: 3½ in minimum slab thickness, site cleared of vegetation and top soil, and the vapor retarder placed between slab and base course or prepared subgrade.. Referenced to IRC 2021 §R506.1 / §R506.2 / §R506.2.3.
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