免费混凝土基脚计算器
计算连续基脚所需的混凝土量，输入长度、宽度和深度即可获得立方码结果及损耗余量。
体积（立方码）
2.06 cu yd
Volume (Cubic Yards) vs Footing Length
公式
## How to Calculate Concrete for Footings ### Formula **Volume = Length (ft) x Width (ft) x Depth (ft)** Convert width and depth from inches to feet by dividing by 12, then divide total cubic feet by 27 for cubic yards. Footings are typically 20 inches wide and 8 inches deep for residential construction, but always follow local building codes.
计算示例
A continuous footing that is 50 ft long, 20 inches wide, and 8 inches deep.
- 01Width in feet: 20 / 12 = 1.667 ft
- 02Depth in feet: 8 / 12 = 0.667 ft
- 03Volume = 50 × 1.667 × 0.667 = 55.56 cu ft
- 04Cubic yards = 55.56 / 27 = 2.06 cu yd
- 05With 10% waste = 2.06 × 1.10 = 2.26 cu yd
常见问题
How deep should a footing be?
Footings must extend below the frost line in your area, typically 12-48 inches depending on climate. The minimum thickness is usually 6-8 inches for residential buildings.
How wide should a footing be?
A standard rule is that footings should be at least twice the width of the wall they support. For an 8-inch block wall, use at least a 16-inch wide footing.
What PSI concrete is used for footings?
Most residential footings use 2,500 to 3,000 PSI concrete. Commercial or structural footings may require 3,500 to 4,000 PSI or higher.
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