Airport Engineering
For the taxiways, the following statement is true

The permissible rate of change of grade is 1%
All listed here
The permissible transverse grade is 1.5%
The maximum longitudinal grade is 3%

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Airport Engineering
Wing loading of an aircraft is

Gross total weight of the aircraft/ load of the wings
Load of the wings
Gross total weight of the aircraft/ wing area
Gross total weight of the aircraft/total available H.P of engines

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