Airport Engineering
As per ICAO, the minimum basic runway length for A and E type of airport will be

1500 m and 750 m
2100 m and 600 m
2100 m and 750 m
1500 m and 600 m

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Airport Engineering
Effective length of a runway is the distance between

Point of intersection of the obstruction clearance line and the extended plane of the runway surface, and the other end of the runway
Ends of the clear way on either side
Point of intersection of the glide path and the extended plane of the runway surface and the other end of the runway
Ends of the runway

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