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Highway Engineering - Engineering

Q1:

If the ruling gradient on any highway is 3%, the gradient provided on the curve of 300 metre radius, is

A 2.00%

B 2.25%

C 2.50%

D 2.75%

E 3.00%

ANS:D - 2.75%

Grade compensation = min (30+r/r or 75/r).
Here 75/r = 0.25.
Gradient = ruling gradient - grade compensation.
= 3.00 - 0.25.
= 2.75.