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Highway Engineering - Engineering

Q1:

If x% is the gradient of an alignment and y% is the gradient after proper superelevation along a curved portion of a highway, the differential grade along the curve, is

A (x + y)%

B (x - y)%

C (y - x)%

D (x x y)%

E (y + x)%

ANS:C - (y - x)%

The grade is decreased in a curve, not increased. It is called grade compensation. Y-X % is differential grade. Although, y% is lesser or flatter than x%.