Formwork gives concrete its shape. Once the concrete cures and gains sufficient strength, the formwork is removed (stripped).
Types
- Timber formwork: Traditional, flexible, good for custom shapes
- Steel formwork: Reusable 50+ times, smooth finish
- Aluminum formwork: Lightweight, fast assembly
- Plastic formwork: Lightweight, modular systems
Cost Factor
Formwork can represent 35–60% of total concrete structure cost. Efficient formwork design significantly reduces project expenses.
Stripping Time
Columns/walls: 24–48 hours. Slabs (props remain): 3–7 days. Beams: 7–14 days.