For calculating concrete amounts for flat surfaces: After carefully measuring the exact length, width and thickness of the area needing concrete, plug in your numbers and the amount of concrete in yards required will be estimated for you.
X
X
=
Length (Ft)
Width (Ft)
Thickness
Yards

For calculating concrete amounts for round columns: After carefully measuring the diameter and depth of the radius, plug in your numbers and the amount of concrete in yards required will be estimated for you.

X
X
3.14
X
=
Radius (In)
Radius (In)
Depth
Yards

Please note: Calculate ½ a yard to your final number to account for material waste that is caused by material handling while constructing job.