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Highway Engineering - Engineering

Q1:

If N is the algebraic difference of grades, S is the head light beam distance in metres, the length (L) of a valley curve, is

A

B

C

D

E

ANS:A -

For valley curves;

L= NS^2÷(1.5+0.035S) ; L>S.
L = 2S - N/(1.5+0.035S); L<S.