Structural · S-HCW73

Slab on Grade Contraction Joint and Subgrade Preparation

Elements

Columns Walls Floors / Slabs Waterproofing / Flashing Drainage

Connections

About this detail

A structural concrete slab on grade assembly features a saw-cut contraction joint with a depth of t/4 and a width of 1/8 inch. The slab rests on a vapor barrier placed over four inches of drain rock, set atop six inches of scarified, moisture-conditioned, and compacted soil above undisturbed soil. Accompanying diagrams outline minimum and maximum reinforcing bar clear spacings and lap splice configurations for structural concrete.

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