The tracked vehicle loading specified under IRC Class AA originated due to the loading pattern of _______
- ATrucks
- BHeavy duty armed trucks
- CArms tanksCorrect
- DTrain of army duty truck loads
Solution
Concept
IRC Class AA tracked vehicle loading is based on the pattern of military tanks.
Step-by-step solution
1. IRC Class AA loading has two types: tracked (chain) and wheeled. 2. The tracked vehicle is 70 t. 3. This pattern comes from military battle tanks. 4. Option C (Arms tanks) is the nearest match.
Explanation
IRC Class AA loading is used for bridges on important roads in cities and highways. Its tracked vehicle copies the load of a military tank. So the nearest option is Arms tanks.
Why the other options are wrong
A: Ordinary trucks are the basis of Class A and Class B loading. B: Armed trucks are not the origin of the tracked load. D: A train of truck loads is the pattern of Class A.
Shortcut
Class AA tracked = military tank.
Common mistake
Confusing Class AA (tanks) with Class A (train of trucks).
Correct answer: C) Arms tanks