Airport Engineering
The landing and takeoff of the air craft is made against the direction of wind. In no case the centre line of the runway should make an angle with the wind direction exceeding

30°
40°
20°
10°

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Airport Engineering
The capacity of parallel runway pattern depends upon

Lateral spacing between two runways, weather conditions and navigational aids available.
Lateral spacing between two runways and navigational aids available
Lateral spacing between two runways and weather conditions
Weather conditions and navigational aids available

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