Traffic and Highway Engineering
Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Chapter 19, Problem 4P
To determine

The truck factor for the section of highway.

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An axle weight study on a section of highway gave the following data on axle load distribution. Determine the truck factor for this section of highway. Assume SN = 4 and pt = 2.5.
A. Given Design years for 2 direction of road Number of lanes. 2 lanes ADT - 3500 Calculate the ESAL for one direction of road 20 years Wheel Load (kN) Equivalent Load Factors % in total traffic volume 45 0.03 25 20 0.044 16 150 15 8 80 2.5 25 165 25 21 285 42 2.
Q5. Given the following information: A concrete pavement for two lane highway has doweled joints and no concrete shoulders. The modulus of subgrade reaction is 200 pci (54.2MN/m3), and the modulus of rupture is 650 psi (4.5Mpa). Assume a load safety factor of 1.1. truck weight distribution data for single axle load is as follows: Axle load(kips) 1 Single axles 28 Multiplied by LSF (1.1) 26 24 2 Expected repetitions 3 Erosion analysis Allowable repetitions 30.8 5,913 28.6 12,483 26.4 15,111 22 24.2 102,492 Using a trial thickness of 8 in. Fill in the empty spaces using PCA design method 4 6. Erosion factor Erosion percent 5
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Traffic and Highway Engineering
Civil Engineering
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Cengage Learning