混凝土板计算器 — 公式
## 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.
### 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.
计算示例
A patio slab measuring 20 ft by 12 ft with a 4-inch thickness.
- Convert thickness: 4 inches / 12 = 0.333 ft
- Volume = 20 × 12 × 0.333 = 80 cu ft
- Cubic yards = 80 / 27 = 2.96 cu yd
- With 10% waste = 2.96 × 1.10 = 3.26 cu yd
- Order 3.5 cubic yards from the concrete plant.