Chapter 6 Solutions to The Odd Numbered Problem

Solution provided by Todd Rayne of Hamilton College

1. A soil sample is collected and taken to the lab. The volume of the sample is 75 cm³. At the natural water content, the sample weighs 158.88 g. It is then saturated with water and reweighed. The saturated weight is 164.34 g. The sample is gravity drained, and its weight is found to be 147.30 g. Finally, it is oven-dried; the dry weight is 142.89 g. Assume the density of water is 1.00 g/cm³. Find each of the following:

(A) Volumetric water content

(B) Gravimetric water content

(C) Saturation ratio

(D) Porosity

(E) Specific yield

(F) Specific retention

(G) Dry bulk density

(H) Porosity computed from density

A.

B.

C.

D.

E.

F.

G.

H.

Porosity computed from density: (Eqn. 6-14)