Civil Engineering - Water Supply Engineering - Discussion

Thanks for explaining.

Thanks @Vidya.

Thanks @Vidya.

Temp stress occurs only when laid above the ground. So option C is right.

Forces Acting on Pressure Conduits.

Pressure pipes must be designed to withstand the following forces :
(1) The internal pressure of water.
(2) Water hammer pressures.
(3) Pressure due to external loads (when buried under the ground).
(4) Temperatures stresses (when laid above the ground).
(5) Longitudinal stresses due to flow around bends or change in cross-section.
(6) Flexural stresses (when laid over support at interval or on bridges).

D is the correct answer.

E is correct, because the pipe subjected to above all pressure.