For the stability of a structure against seepage pressure according to Khosla's creep theory, the critical gradient is

ANS:E - 1.00

Critical gradient:

When the effective stress is zero, the gradient is sometimes referred to as the critical gradient, and since the zero effective stress conditions occur when the gradient is 1. 0, the critical gradient is 1.0. The zero effective stress condition under upward flow conditions is also referred to as a "quick" condition.