Pavement Design and Analysis - Design a HMA pavement structure for a 6-lane divided urban highway using the AASHTO methodto accommodate the traffic loads and conditions as follows. Give two alternative layer thicknesscombinations. Design a HMA pavement structure for a 6-lane divided urban highway using the AASHTO methodto accommodate the traffic loads and conditions as follows. Give two alternative layer thicknesscombinations.AADT (summer of 2017) = 10,000 vpdTruck percent of 20% class-9 semi-trailersTraffic growth rate of 2.5% annuallyDirectional split = 55/45o Design period = 20 yearsAxle load distribution (percentages) as per table belowLoad Bin (kips)Single axles onsingle tires40Tandem axles8-1010-126034-365536-3845o Desired Reliability 95%Soil is silty clay with a CBR ofThree materials to be used with the following moduli (lab results):НМА:E = 400,000 psi, Gmb of 2.37, 60JD/TonBaseCoarse: E = 30,000 psi, 10 JD/m³E = 15,000 psi, 8 JD/m³Base and SubBase to be saturated 5% of the time with a good drainage system.SubBase:ооо о о

First you need to calculate the ESAL's which is on the road during the plan life. For this put the…

Answered: Design a HMA pavement structure for a…

Design a HMA pavement structure for a 6-lane divided u o accommodate the traffic loads and conditions as foll ombinations. LO0 00

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Design of pavements

Pavement is a structure that is made up of different layers such as sub-base course layer, base course layer, binder course, and a surface course formed with different materials such as gravel, above the subgrade soil constructed to act as a path or carriageway enabling the movement of vehicles. The surface of the pavement should possess characteristics such as adequate friction, light reflection, and drainage. The pavements are classified based on structural design into rigid pavements, flexible pavements, composite pavements, and unpaved pavements. The process of determining a suitable pavement type, its constituent layers, and its thickness is called pavement design.

Question

Pavement Design and Analysis - Design a HMA pavement structure for a 6-lane divided urban highway using the AASHTO method

to accommodate the traffic loads and conditions as follows. Give two alternative layer thickness

combinations.

Design a HMA pavement structure for a 6-lane divided urban highway using the AASHTO method
to accommodate the traffic loads and conditions as follows. Give two alternative layer thickness
combinations.
AADT (summer of 2017) = 10,000 vpd
Truck percent of 20% class-9 semi-trailers
Traffic growth rate of 2.5% annually
Directional split = 55/45
o Design period = 20 years
Axle load distribution (percentages) as per table below
Load Bin (kips)
Single axles on
single tires
40
Tandem axles
8-10
10-12
60
34-36
55
36-38
45
o Desired Reliability 95%
Soil is silty clay with a CBR of
Three materials to be used with the following moduli (lab results):
НМА:
E = 400,000 psi, Gmb of 2.37, 60JD/Ton
BaseCoarse: E = 30,000 psi, 10 JD/m³
E = 15,000 psi, 8 JD/m³
Base and SubBase to be saturated 5% of the time with a good drainage system.
SubBase:
ооо о о

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