1 If 1200 bank cubic yards in place at natural density of de

1) If 1,200 bank cubic yards (in place at natural density) of dense clay (15 percent swell) needs to be hauled away, how many loose cubic yards would have to be hauled away by truck? If 7 cy dump trucks will be used to haul this material away, how many loads would be required? ) Use the cross-section 0910470095090method to determine the amount of cut/fill in grid cells 10 and 26 , of the site plan below. The grids are 50 feet apart nboth The o105015 001existing grade appears above the proposed 028| : Os 1 51 ·oul oul D.9 grades. Express your cuts in bank cubic yards (bcy) and your fills in compacted 04.2 045 104 045 202222directions. 015 28 2 95 02.7 029 005 007 cubic yards (ccy)

Solution

Q.1

Dense volume = 1200 cubic yards

after swell, volume = 1200 + 0.15*1200 = 1380 cub. yards

So 1380 cubic yards of loose has to be hauled away.

load in each truck = 7 cy,

so no. of loads of truck needed = 1380/7= 197.14 == 198 loads.

post clear image for Q.2