Concrete slab thickness by use
Typical industry planning values — NOT a structural/geotechnical design. A licensed engineer sizes load-bearing concrete, footings and reinforcement; confirm against your product’s spec sheet and local code.
Slab thickness is driven by the load it carries. A residential slab, patio or sidewalk is typically 4"; a garage or shed slab 4–5"; a driveway or heavy-vehicle slab 5–6". These are labeled planning values — NOT a structural/geotechnical design. Use them with the slab-on-grade thickness reference and the driveway thickness & rebar reference.
| Use | Typical thickness |
|---|---|
| Residential slab / patio / sidewalk | 4" |
| Garage / shed slab | 4–5" |
| Driveway / heavy vehicles / RV | 5–6" |
Labeled planning values — NOT a structural/geotechnical design. Thicker slabs and reinforcement suit heavier loads; a licensed engineer sizes load-bearing concrete for your site and code.