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Highway Engineering

Q1:

Extra widening required at a horizontal curve on a single lane hill road of radius 80 m for a design speed of 50 km ph and for a vehicle with wheel base 6.0 m is

A 0.225 m

B 0.589 m

C 1.250 m

D none of these

ANS:B - 0.589 m

@All.

If you didn't consider mechanical widening on hill, it means you give the vehicle to shortcut path about the jump from hill with a minimum radius and 50kmph speed.

So (W = Wmech+Wphy) is correct formula for all types of roads.



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