According to the International Civil Aviation Organization (I.C.A.O.) the strength of runway pavements, have been coded by

A. 78 m B. 150 m C. 300 m D. 450 m

A. Asphaltic concrete B. Rubberised tar concrete C. Plain concrete D. All the above

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

A. 22.5 m × 22.5 m B. 30 m × 30 m C. 22.5 m × 30 m D. 60 m × 120 m