QA// In detector weight station the following data illustrate the weighting of 4- Axle Tractor Semi-Trailers truck, find the truck load factor for flexible pavement with an SN=4 and terminal serviceability (p.) of 2.0: Axle load عليه قلو Single Axle (2.000-4,999) Single Axle (5,000-8,999) Single Axle (9,000-19,999) Tandem Axle under 7,000 Tandem Axle (7,000- 17,999) Tandem Axle (18,000-24,999) Number of Axle 20 35 15 in 5 27 7 L

QA// In detector weight station the following data illustrate the weighting of 4- Axle Tractor Semi-Trailers truck, find the truck load factor for flexible pavement with an SN=4 and terminal serviceability (p.) of 2.0: Axle load عليه قلو Single Axle (2.000-4,999) Single Axle (5,000-8,999) Single Axle (9,000-19,999) Tandem Axle under 7,000 Tandem Axle (7,000- 17,999) Tandem Axle (18,000-24,999) Number of Axle 20 35 15 in 5 27 7 L

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter19: Design Of Flexible Highway Pavements

Section: Chapter Questions

Problem 4P

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If the pavement structure number (SN) is equal to 1 and the terminal serviceability index (TSI) is 2.5. what would be the ESAL value that would correspond to a tandem axle load of 18,000 pounds? O 1.000 O.0.070 O 0.018 O 2000
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Show transcribed image text 1. Truck A has two single axles. One axle weighs 12,000 Ib and the other weighs 23,000 lb. Truck B has an 8000-lb single axle and a 43,000-lb tandem axle. On a flexible pavement with a 3-inch hot-mix asphalt (HMA) wearing surface, a 6-inch soil-cement base, and an 8-inch crushed stone sub base, which truck will cause more pavement damage? (Assume drainage coefficient are 1.0.) Hints: use linear interpolation if SN is not integer. 2. A highway has the following pavement design daily traffic: 300 single axles at 10,000 lb each, 120 single axles at 18,000 lb each, 100 single axles at 23,000 Ib each, 100 tandem axles at 32,000 lb each, 30 single axles at 32,000 lb each, and 100 triple axles at 40,000 lb each. A flexible pavement is designed to have 4 inches of sand-mix asphalt wearing surface, 6 inches of soil- cement base, and 7 inches of crushed stone sub base. The pavement has a 10-year design life, a reliability of 85%, an overall standard deviation of 0.30,…
Case Study 1: Forecast the annual avaerage daily traffic if the design life is 10 years. What is the 80 kn equivalent single axle load if the traffic equivalence factor of light vehicles is 0.015 , buses is 0.25 and trucks is 0.80. If the wheel load of truck is to be considered base from 80 kn ESAL, determine the effect of the load in the foundation layer of the pavement if it occurs at a depth of 1.5 m at 2.5m from the center of the tire. The wheel load factor is 0.25 and the stress influence factor is 0.05| Light Vehicles 550 Year Buses Trucks 2015 350 125 2016 1750 1350 1098
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