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UPSC Civil Service Exam Questions - Engineering

Q1:

Ruling gradient on highways as per IRC in plane terrain is

A 1 in 30

B 1 in 60

C 1 in 100

D 1 in 200

ANS:A - 1 in 30

For plain/rolling 3.3 percent or 1/30.
For mountain 5 percent or 1/20.
For steep 6 percent or 1/16.66.