Trapezoid Footing Concrete Calculator


This calculator calculates volume of a trapezoid footing along with its raft portion.

Steps Used

Calculate raft volume : raft length x raft width x raft height

Formula for trapezoid volume is : V = h/3 (A1+A2+√(A1 x A2))

Where :

  1. V = volume of trapezoid
  2. h = height of trapezoid
  3. A1 = area of lower shape
  4. A2 = area of upper shape

Add raft volume and trapezoid portion volume to get total trapezoid footing volume