Question

Which of the following is not a limitation of creep theory?

(a) No distinction between the vertical and horizontal creep

(b) No distinction between effectiveness of outer and inner faces of sheet pile

(c) Significance of exit gradient is not considered

(d) Only a nominal floor thickness is required on the upstream side so as to resist water

The question was posed to me in exam.

Asked question is from Seepage Theories topic in chapter Seepage Theories and Weirs and Barrages Design of Irrigation Engineering

Answer 1

Correct option is (d) Only a nominal floor thickness is required on the upstream side so as to resist water

Explanation: The thickness is generally increased by 33% so as to allow a suitable factor of safety. The water on the upstream side is more than the downstream side and it counterbalances the uplift caused on that side. Hence, only a nominal thickness is required.