Concrete Slab-on-Grade Sequence

Updated Mar 26, 2026

Slab construction: 1) Sub-grade compaction (95% Proctor), 2) Vapor barrier (10-15 mil), 3) Gravel base (4-6 in), 4) Edge forms, 5) Rebar/mesh placement on chairs, 6) Pre-pour inspection, 7) Concrete placement, 8) Finishing (screed, float, trowel), 9) Curing (7+ days).

category

Concrete — Slab

cure time

7 days minimum before loading

successor

Framing or interior work

predecessor

Underground MEP complete

critical holds

["Pre-pour inspection","Compaction test"]

SOURCES

🔗https://www.cmaanet.org/

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