Question

Which factor should be kept in safe limits to avoid failure of structure?

(a) Seeping Pressure

(b) Exit Gradient

(c) Side Slopes

(d) Velocity of Flow

This question was addressed to me in an international level competition.

I'm obligated to ask this question of Design of Modern Weirs and Barrages in chapter Seepage Theories and Weirs and Barrages Design of Irrigation Engineering

Answer 1

Correct option is (b) Exit Gradient

The explanation is: To ensure the safety of the structure or to say to protect the structure from failure due to piping, the exit gradient should be kept within the safe limits.