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Building Materials - Engineering

Q1:

Based on flow quality, the sequence of pipes is

A A.C. pipes, G.I. pipes, C.I. pipes, PVC pipes

B C.I. pipes, G.I. pipes, A.C. pipes, PVC pipes <

C C.I. pipes, G.I. pipes, PVC pipes, A.C. pipes

D None of these.

ANS:B - C.I. pipes, G.I. pipes, A.C. pipes, PVC pipes <

The correct order of flow quality, from highest to lowest, is:

AC pipes.
GI pipes.
CI pipes.
PVC pipes. Flow quality refers to the flow rate. Amount of fluid flowing per unit time. AC pipes are used in sewar works due to their durability and resistance to corrosion due to presence of asbestos. However, cost iron have highest flow speed due to smoothness and less friction to fluid flow.