2 3 points A sample of soil has a volume of 045 ft and a wei

2. (3 points) A sample of soil has a volume of 0.45 ft and a weight of S3.3 Ib. After being dried in an oven, it has a weight of 45.1 lb. It has a specific gravity of solids of 2.70. Compute its moisture content and degree of saturation before it was placed in the oven.

Solution

moisture content = (Weight of soil - dry weight)/dry weight

= (53.3-45.1)/45.1

=0.182

dry unit weight = dry weight / volume

=45.1/0.45

=100.22 lb/ft3

dry wnit weight = (Specific gravity * unit weight of water)/(1+e)

e=(2.7*62.43/100.22)-1

=1.68

degree of saturation = (wG)/e

=0.182*2.7/1.68

=0.292