Determine the turning radius of a taxiway according to Horonjeff's equation for a supersonic transport aircraft with a wheelbase of 30 m and a tread of main landing gear of 6 m for a design turning speed of 50 kmph. Assume the coefficient of friction between the tire and pavement surface is 0.13 and the width of the taxiway pavement is 22.5 m.

The paved area adjacent to and in front of the terminal building is known as the apron, used for loading and unloading aircrafts. The dimensions of the loading apron depend upon: Statement 1: Number of loading positions required Statement 2: Size of the airport and service station for aircrafts

The thickness of the sub-base layer should NOT be less than ____ for a design traffic of less than 10 MSA as per IRC guidelines.