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Highway Engineering - Engineering

Q1:

Intermediate catch water drains are provided only, if

A catchment area of the watershed above road is large

B intensity of rainfall is heavy

C single catch water drain is inadequate

D all the above.

ANS:D - all the above.

@Surya & @Nitin.

The purpose of catch water drain is provided along the roadside on higher elevations such as hill side, to catch rainwater before entering the road surface and disposing of it.