Part 1

, this mixture costs $4.92 per cubic yard. According to the same section, 25 cents must be added to this cost for extra labor, bringing the total up to $5.17 per cubic yard. If the concrete floor is 4 inches thick, the cost per square yard will be ⁴/₃₆ × 5.17 = 57 cents, approximately. The top coat, according to _Estimating and Calculating Quantities_,