1. On a 5-acre level terrain building site, an earthwork contractor has instructed her crew to strip and grub the topsoil of a 60,000-ft2 proposed building pad to a minus 2-ft sub-grade. The soil has a swell of 40% and an angle of repose at 30°. The diameter of the stockpile.
2. An earthwork contract was awarded to excavate and backfill the foundation of a proposed 75-ft by 75-ft office building. The existing grade elevation is 37.00-ft while the sub-base for the below grade basement is 31.50-ft. The concrete contractor requires a 3-ft perimeter walkway in order to place the concrete formwork. Soil conditions are classified as OSHA Type B soils which require 1H:1V side slopes.The total volume (yd3) excavated.