8- A granular pavement with thin bituminous surfacing is going to be constructed in a rural area and it is estimated that the average annual daily traffic will be 21,000 vehicles per day. The road will have 3 lanes in each direction. The survey data from the existing roads close to that area shows that 15% of the vehicles in the traffic stream are heavy and the rest are light. However, no details of heavy vehicle types are given. It is also estimated that the annual growth factor is 3.2%. Determine the design traffic (DESA) assuming that the damage index (ESA/HVAG) is 0.9 9- a) What are the three main distress modes in flexible pavements (3 points)? b) What are their likely causes

8- A granular pavement with thin bituminous surfacing is going to be constructed in a rural area and it is estimated that the average annual daily traffic will be 21,000 vehicles per day. The road will have 3 lanes in each direction. The survey data from the existing roads close to that area shows that 15% of the vehicles in the traffic stream are heavy and the rest are light. However, no details of heavy vehicle types are given. It is also estimated that the annual growth factor is 3.2%. Determine the design traffic (DESA) assuming that the damage index (ESA/HVAG) is 0.9 9- a) What are the three main distress modes in flexible pavements (3 points)? b) What are their likely causes

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter6: Fundamental Principles Of Traffic Flow

Section: Chapter Questions

Problem 23P

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