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Airport Engineering - Engineering

Q1:

Pick up the correct statement from the following:

A The distance between the points of intersection of the extreme tangents to the transition curve is kept greater than 7500 m x sum of grade changes at the point of intersection

B The rate of change of grade is limited to 0.3% per 30 m length of the curve

C According to I.C.A.O. the maximum longitudinal gradient along a runway is limited to 1.5%

D All the above.

ANS:D - All the above.

Depends on the Type of airport.
ABC type its longitudnal gradient is 0.10 per 30m.
DE type 0.4% per 30m.