A concrete retaining wall whose total volume will be 735 cy is to be constructed by using job-mixed concrete containing the following quantities per cubic yard, based on surface-dry sand and gravel:
The sand and gravel will be purchased by the ton weight, including any moisture present at the time they are weighed. The gross weights, including the moisture present at the time of weighing, are
It is estimated that 8% of the sand and 6% of the gravel will be lost or not recovered in the stockpile at the job. Determine the total number of tons each of sand and gravel required for the project.