1.7.3 Axle load study conducted on a stretch of road in 2017 yield'these results: Axle load range (ton) 2 - 4 4 - 6 6-8 8 - 10 10 - 12 12 - 14 No. of axle 500 710 599 21 452 168 Number of commercial vehicles for the particular day is 1860. Based on Road Note 31, determine: a) Average number of axle per commercial vehicle; b) Total equivalent standard axle for that particular day;

1.7.3 Axle load study conducted on a stretch of road in 2017 yield'these results: Axle load range (ton) 2 - 4 4 - 6 6-8 8 - 10 10 - 12 12 - 14 No. of axle 500 710 599 21 452 168 Number of commercial vehicles for the particular day is 1860. Based on Road Note 31, determine: a) Average number of axle per commercial vehicle; b) Total equivalent standard axle for that particular day;

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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Question

4.7
PROBLEMS
4.7.3 Axle load study conducted on a stretch of road in 2017 yield theşe results:
Axle load range (ton)
2 - 4
4 - 6
6 -8
8 - 10
10 - 12
12 – 14
No. of axle
500
710
599
621
452
168
Number of commercial vehicles for the particular day is 1860. Based on Road Note 31, determine:
a) Average number of axle per commercial vehicle;
b) Total equivalent standard axle for that particular day;
c) Average number of standard axle per commercial vehicle; and
d) Average number of standard axle per commercial axle.

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The predicted traffic mix of a proposed four-lane urban non-interstate freeway is as follows. Passenger cars = 78% Single-unit trucks: 2-axle, 5,000 lb/axle = 12% 2-axle, 9,000 lb/axle = 4% 3-axle or more, 23,000 lb/axle = 3% Tractor semitrailers and combinations: 3-axle, 20,000 lb/axle = 3% The projected AADT during the first year of operation is 3,900 (both directions). If the traffic growth rate is estimated at 3 percent and the CBR of the subgrade is 7.5, determine the depth of a full-asphalt pavement (in inches) using the AASHTO method and n = 20 years. The resilient modulus of the asphalt (EAC) is 320,000 lb/in². Assume m, for the subgrade is 1 and the percent of traffic on the design lane is 42 percent, pt = 2.5, and SN = 4. Use a reliability level of 90 percent, a standard deviation of 0.45, and a design serviceability loss of 2.0. Assume the design lane factor f is 0.42. (Use single-axle load equivalency factors for 2-axle vehicles and tandem-axle load equivalency factors for…
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