Concrete slab on grade quality control checklist

1. Pre-Construction Preparation

2. Site Inspection

  • Ensure site slopes away from the foundation.
  • Verify drainage systems are in place and functional.
  • Look for standing water or pooling areas.
  • Confirm grading meets specifications outlined in plans.
  • Test subgrade with a penetrometer for compaction.
  • Check for uniformity in material and density.
  • Inspect for signs of settling or erosion.
  • Ensure moisture content is within acceptable limits.
  • Verify formwork is level and secure.
  • Check for adequate support to prevent movement.
  • Inspect for correct alignment and dimensions.
  • Ensure formwork materials are clean and free from debris.
  • Use a measuring tape to check all dimensions.
  • Confirm elevations using a level or laser tool.
  • Cross-reference with architectural and structural plans.
  • Document any discrepancies for correction.

3. Material Verification

4. Reinforcement Installation

5. Concrete Placement

6. Finishing Operations

7. Post-Placement Inspection

8. Final Review

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