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Airport Engineering - Engineering

Q1:

A gradient of + 0.08% is followed by a gradient of - 0.07%. If the permissible rate of change of grade is 0.003 per 30 metres, the length of the transition curve, is

A 150 m

B 140 m

C 160 m

D 175 m

ANS:A - 150 m

The answer is 15m unless its a type in the question.

If the gradients are 0.8% and -0.7%, then answer would have been 150m.