TryBuildCalcPCC Thickness Calculator PCC quantity by thickness estimator
Calculate PCC cement, sand, and aggregate instantly.
🕒 Last updated: August 13, 2026
PCC Dimensions
ℹ️Typical: 75-100 mm (foundation blinding), 100-125 mm (flooring / floor base)
Common PCC thickness:
Cost
For a 12.00 m² footprint, you need approximately 1.89 m³ (66.7 cft) of PCC concrete — 8.4 cement bags.
PCC Concrete
Wet volume (before wastage): 1.800 m³
Dry volume: 2.772 m³
Final quantity (with wastage): 1.89 m³ (66.7 cft)
Materials
Cement: 8.4 bags (420 kg)
Sand: 0.87 m³ (30.8 cft)
Aggregate: 1.75 m³ (61.7 cft)
Assumptions Used
Dry volume factor: 1.54 | Cement bag: 50 kg / 0.0347 m³ | PCC is non-reinforced — no steel, and no shuttering (cast directly against the excavation or a prepared subgrade, not panel formwork).
Looking for the verification checklist, reference tables, tips, or common mistakes?See the complete PCC Calculator.
PCC quantity by thickness
This page is pre-filled with a 150 mm thickness — a common figure for PCC hard standing or a heavier-duty base layer — so you can see how thickness drives concrete volume for your footprint.
PCC thickness has no single fixed answer: it depends on the application (blinding vs. hard standing vs. floor base) and the load it needs to support. Edit the thickness above to compare quantities against different design options.
- Blinding layers: commonly 75-100 mm.
- Floor base / levelling courses: commonly 100-125 mm.
- Hard standing and pathways subject to vehicle loads: commonly 125-150 mm+.
How Is PCC Quantity Calculated?
PCC quantity is calculated from wet concrete volume, a dry-volume correction factor, and cement-sand-aggregate mix ratio distribution, then an optional cost estimate on top.
Step 1 — PCC Volume
Wet Volume = Length × Width × Thickness
Dry Volume = Wet Volume × 1.54
Dry volume accounts for the voids between aggregate particles that disappear once the concrete is mixed and compacted. The dry volume is split into cement, sand, and aggregate using the selected mix ratio, and wastage is applied once to the final quantities.
Step 2 — Cement Bags
Cement Volume = Dry Volume × (Cement Ratio Part ÷ Total Ratio Parts)
Cement Bags = Cement Volume ÷ 0.0347 m³/bag (50 kg bags)
Sand and aggregate are split the same way, using their own ratio parts. One standard cement bag (50 kg) occupies approximately 0.0347 m³.
Step 3 — Final Quantity with Wastage
Final Wet Volume = Wet Volume × (1 + Wastage %)
This final wet volume (and the wastage-adjusted cement/sand/aggregate figures) is the practical quantity to order or batch on site — shown separately from the theoretical pre-wastage volume.
Worked Example
This example walks through your current inputs above, using the same steps as the Formula section.
Input Values Used
| Input | Value | Why it is used |
|---|---|---|
| Length × width × thickness | 4m × 3m × 150mm | Sets the wet concrete volume |
| Mix ratio / wastage | 1:3:6, 5% wastage | Splits dry volume into cement/sand/aggregate and adds a buffer for site losses |
Step 1 — Volume
| Calculation | Substitution | Result |
|---|---|---|
| Wet volume | 4m × 3m × 150mm | 1.800 m³ |
| Dry volume | 1.800 × 1.54 | 2.772 m³ |
| With 5% wastage | 1.800 × 1.05 | 1.890 m³ (66.7 cft) |
Step 2 — Materials
| Material | Quantity |
|---|---|
| Cement | 8.4 bags (420 kg) |
| Sand | 0.87 m³ (30.8 cft) |
| Aggregate | 1.75 m³ (61.7 cft) |
Therefore, approximately 1.89 m³ (66.7 cft) of PCC concrete should be ordered or batched for this layer, needing 8.4 cement bags, while sand and aggregate are estimated separately for site mixing.
Related Calculators
Disclaimer: This calculator provides approximate results for planning and estimation purposes only. Actual requirements may vary based on site conditions, materials, workmanship, and local building regulations. Always consult a qualified engineer, architect, or construction professional before making final decisions.