A 12” water main is being installed along the shoulder of a rural road. The excavation for the water main will be 4 feet

[answerhappygod]

A 12” water main is being installed along the shoulder of a
rural road. The excavation for the
water main will be 4 feet deep and 3.5 feet wide. The soil is
estimated to have a swell factor of
0.80 and an angle of repose of 31 degrees. If the stockpile will
start 2 feet from the edge of the
excavation, and the distance from the edge of the trench to the
limits of disturbance is 20 feet,
what is the estimated clear space between the far toe and of the
stockpile and the limits of
disturbance?