免费露台基脚计算器

计算露台所需的基脚数量和混凝土总量，输入尺寸和间距即可获得结果。

feet
feet
feet

Maximum spacing between footings along beam

feet

Spacing between beam rows (perpendicular to joists)

inches
inches

Total Footings

9

Beam Rows3
Concrete per Footing0.102 cu yd
Total Concrete0.92 cu yd

Total Footings vs Deck Length

查看公式 →

公式

## How to Calculate Deck Footings ### Formula **Beam Rows = floor(Deck Width / Beam Spacing) + 1** **Footings per Row = floor(Deck Length / Footing Spacing) + 1** **Total Footings = Beam Rows × Footings per Row** **Concrete per Footing = pi × r² × depth / 27** Footing spacing is typically 6-8 ft for 2×8 beams or 8-10 ft for doubled 2×10 or 2×12 beams. Footing depth must extend below the frost line per local building code.

计算示例

A 16×12 ft deck with 8 ft footing spacing, 6 ft beam spacing, 12-inch diameter footings 42 inches deep.

  1. 01Beam rows = floor(12 / 6) + 1 = 3 rows
  2. 02Footings per row = floor(16 / 8) + 1 = 3 footings
  3. 03Total footings = 3 × 3 = 9 footings
  4. 04Footing radius = 12 / 2 / 12 = 0.5 ft
  5. 05Concrete per footing = 3.14159 × 0.5² × 3.5 / 27 = 0.102 cu yd
  6. 06Total concrete = 9 × 0.102 = 0.92 cu yd