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Highway Engineering - Engineering

Q1:

Gradient resistance of moving vehicles along down slopes, is

A + 7 kg/tonne

B + 9 kg/tonne

C - 9 kg/tonne

D - 7 kg/tonne

ANS:C - - 9 kg/tonne

The frictional resistance is generally taken 1% of the load i.e. 10kg/tonne and the closest answer is 9 kg/tonne and negative because the down slopes of the gradient.