Formwork Calculator
Calculate formwork area and materials for concrete elements. Supports slabs, beams, columns, and walls with props calculation, release agent quantity, and reuse efficiency.
Props/m²: 1 | Release agent: 50 ml/m²
Total identical elements to cast
Times formwork will be reused
| Type | Max Uses | Efficiency |
|---|---|---|
| 0% | ||
| 4000% | ||
| 5500% | ||
| 6500% | ||
| 7200% | ||
| 7700% |
Efficiency = typical condition factor after reuse
Slab
Area = Length × Width (soffit only)
Beam
Area = Bottom + 2 × Sides = L×W + 2×L×D
Column
Area = Perimeter × Height = 2(W+D)×H
Wall
Area = 2 × Length × Height (both faces)
Total Area
280
Props Required
240
Reuse Savings
65%
Per Element
28.00 m²
All Elements
280 m²
Component Breakdown (per element)
Bottom/Soffit
24.00 m²
Sides
4.00 m²
Purchase Quantity
70 m²
With 4× reuse
Cost Savings
65%
vs. single use
Total Quantity
14.0 L
Coverage Rate
50 ml/m²
Notes:
- Add 10% waste allowance included in calculations
- Props quantity for slab/beam elements only
- Consider striking time based on concrete strength
- System formwork may have different reuse rates
- Verify with formwork supplier specifications
IMPORTANT DISCLAIMER
This calculator provides PRELIMINARY ESTIMATES ONLY and is intended for planning and budgeting purposes. Results should NOT be used for final structural design or construction without verification by a licensed Professional Engineer (PE) or Chartered Engineer (CEng).
By using this tool, you acknowledge that:
1. All calculations are indicative and may not account for site-specific conditions, load combinations, or local code requirements.