CT Estimation question equations

Equation for finding volume of earth between cross section areas (end areas method)

V = d/2(first A + last A + 2(other areas added))

Order of things to find for calculating time required

1. Volume of soil taken per cycle

2. No. of cycles to load truck

3. Time per truck to load

4. Total time per truck

5. Time for amount required by question, convert to weeks

Volume of soil taken per cycle

Volume of bucket x loading capacity

Number of cycles to load truck

Volume of truck ÷ Volume of backacters per cycle

(v of backacters per cycle = v of soil taken per cycle)

TIme per truck

Number of cycles to load truck x (1hr ÷ cycles per hour output),

then add time to excavate load and tip to find total time per truck