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Highway Engineering - Engineering

Q1:

Design of flexible pavement, involves

A wheel loads

B intensity of traffic

C climate of the region

D sub-grade conditions

E all the above.

ANS:C - climate of the region

E is the correct answer because we consider all these factors in the design of flexible pavement. Consider the following (according to AASHTO standards):

A. Wheel loads: Equivalent Single Axle Load (ESAL).
B. Intensity of traffic: w18 (Sum of ESALs found by multiplying Axle Load Equivalency Factors with Average Daily Traffic).
C. Climate of the region: Drainage conditions (Drainage factors M2, M3).
D. Sub-grade conditions: CBR and Resilient Modulus.

Hence, E is the correct answer.