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Highway Engineering - Engineering

Q1:

When an up gradient of a highway meets a downgrade, the vertical curve provided, is known as

A valley curve

B sag curve

C summit curve

D all the above.

ANS:C - summit curve

The answer is A because.

Summit curve : A vertical curve with convexity upward is know as summit curve.
Valley curve: A vertical curve with convexity DOWN WORD is known as valley curve.
So, downgraded is given valley curve not summit curve.