This calculator calculates volume of a trapezoid footing along with its raft portion.
Calculate raft volume : raft length x raft width x raft height
Formula for trapezoid volume is : V = h/3 (A1+A2+√(A1 x A2))
- V = volume of trapezoid
- h = height of trapezoid
- A1 = area of lower shape
- A2 = area of upper shape
Add raft volume and trapezoid portion volume to get total trapezoid footing volume