Question

01. Foundation soil at the toe of a dam has a void
ratio of 0.62, G = 2.62. Assuming a factor of
safety of 5, the permissible exit gradient is
20.2
(b) 0.5
(d) zero
(C) 1​

Answer 1

Answer:

d) 0.........................

Answer 2

The correct answer is option (a) 20.2.

Explanation:

• Foundation soil at the toe of a dam has a void ratio of 0.62, G = 2.62. Assuming a factor of. safety of 5, the permissible exit gradient is. 20.2.
• Void ratio of a soil sample is defined as the ratio of the space occupied by the voids i.e. volume of voids to the space occupied by solids i.e. volume of solids.
• The specific gravity of the soil solid is G.
• Soil void ratio (e) is the ratio of the volume of voids to the volume of solids: e = (V_v) / (V_s) Where V_v is the volume of the voids (empty or filled with fluid), and V_s is the volume of solids.