This process is intended for small non-structural repair or replacement of equipment with commercial projects where the building owner can obtain a permit to repair or replace the same or existing features of a building without architectural plans.
1 Mark the area that will need concrete and divide it into smaller areas. 2  Calculate its volume of the area after determining the shape of the area (see chart below) by multiplying in the height.  Convert the volume from feet to cubic yards to get the number of cubic yards of concrete youâll need.
Length in Feet x Width in feet x depth in feet (inches divide by 12 to convert to feet) then divide by 27 to get cubic yardage. Approximate compaction factor 25% - multiply by 1.25 to get total yardage. 80â x 24â x 8 inches deep of fill sand. ((80 x 24 x .667) / 27 ) x 1.25 = 59.26 yards. Gravel (Sand, Stone, and Clay Mix) Length in Feet x Width in feet x depth in feet (inches divide by 12 to convert to feet) then divide by 27 to get cubic yardage. Approximate compaction factor 30% - multiply by 1.30 to get total yardage.