The following 2 statements (S1 and S2) pertain to design of flexible pavements:
S1: Most flexible pavement design procedures are based on Benkelman beam deflection measurements
S2 : Elastic deflection is a practical non-destructive measure of pavement stiffness which relates well to fatigue failure.
1
S1 is False and S2 is True
2
Both S1 and S2 are True and S2 is the correct explanation of S1.
3
Both S1 and S2 are True and S2 is not a correct explanation of S1
4
S1 is true and S2 is False
5
None of the above