Kostenloser Betonplatten-Rechner
Berechnen Sie den Betonbedarf für eine Platte in Kubikyard. Geben Sie Länge, Breite und Dicke für eine genaue Schätzung mit Verschnittfaktor ein.
Volumen (Kubikyard)
2.96 cu yd
Volume (Cubic Yards) vs Slab Length
Formel
## How to Calculate Concrete for a Slab ### Formula **Volume (cu ft) = Length (ft) x Width (ft) x Thickness (ft)** **Volume (cu yd) = Volume (cu ft) / 27** First convert thickness from inches to feet by dividing by 12. Standard slab thicknesses are 4 inches for patios and walkways, 4-6 inches for driveways, and 6-8 inches for heavy-duty applications.
Lösungsbeispiel
A patio slab measuring 20 ft by 12 ft with a 4-inch thickness.
- 01Convert thickness: 4 inches / 12 = 0.333 ft
- 02Volume = 20 × 12 × 0.333 = 80 cu ft
- 03Cubic yards = 80 / 27 = 2.96 cu yd
- 04With 10% waste = 2.96 × 1.10 = 3.26 cu yd
- 05Order 3.5 cubic yards from the concrete plant.
Häufig Gestellte Fragen
How thick should a concrete slab be?
Patios and walkways: 4 inches. Residential driveways: 4-6 inches. Garage floors: 4-6 inches. Commercial or heavy vehicle areas: 6-8 inches or more.
Do I need rebar in my concrete slab?
For slabs 4 inches or thicker, rebar or wire mesh is recommended to control cracking. Use #3 or #4 rebar on 18-inch centers for residential slabs.
How long does a concrete slab take to cure?
Concrete reaches about 70% of its strength in 7 days and full design strength in 28 days. Keep the surface moist for the first 7 days for best results.
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