भारतीय सड़क कांग्रेस (IRC) की सिफारिशों के अनुसार, मैदानी इलाकों (plain terrain) में रूलिंग ग्रेडिएंट (ruling gradient) का मान कितना है?

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.