Question

The water supply pipes are buried underground. The load on the buried pipe due to earth filling is given by ____________

(a) W = C*Y*B

(b) W = C*Y/B

(c) W = C*Y*B^2

(d) W = C*Y2*B

This question was posed to me in an online interview.

This interesting question is from Layout of Distribution System in chapter Conveyance and Distribution of Water of Environmental Engineering

Answer 1

Correct option is (c) W = C*Y*B^2

Explanation: According to Marston, the load W on buried pipes due to earth filling is given by  W = C*Y*B^2 where, ‘C’ is the coefficient which depends on soil, ‘Y’ is the unit weight of back fill material and ‘B’ is the width of the trench.