Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Chapter 18, Problem 15P
To determine
An appropriate asphalt binder for an urban expressway.
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4.7.6 Design an asphaltic concrete pavement thickness using Arahan Teknik Jalan 5/85, Arahan
Teknik Jalan 5/85 (Pindaan 2013) and Road Note 31 methods based on these data:
Average commercial vehicle per day per direction (2016) = 1600
(which is 30 %of total traffic per day per direction)
Traffic growth rate per year = 6.0%
SEX
●
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Design life = 10 years
Thickness and CBR value for subgrade layers: 350 mm (12%), 350 mm (8%) and 300
mm (4%)
Project is expected to complete and open to traffic in 2019.
Compare the thickness obtained and comments.
You have been asked to design the pavement for an access highway to a major truck terminal. The design daily truck traffic consists of the following: 80 single axles at 22,500 lb each, 570 tandem axles at 25,000 lb each, 50 tandem axles at 39,000 lb each, and 80 triple axles at 48,000 lb each. The highway is to be designed with rigid pavement having a modulus of rupture of 600lb/in2 and a modulus of elasticity of 5 million lb/in2. The reliability is to be 95%, the overall standard deviation is 0.4, the drainage coefficient is 0.9, ¨PSI is 1.7 (with a TSI of 2.5), and the load transfer coefficient is 3.2. The modulus of subgrade reaction is 200 lb/in3. If a 20-year design life is to be used, determine the required slab thickness
The AADTT of a 2-way (2-lane each way) highway is 10,000. The directional distribution may
vary between 45 and 55% depending on season. The lane distribution may vary between 60 and
75%. The driving lane always carries more loads compared to the passing lane. The growth
factor for the pavement is 3.5%. Based on the above information, calculate the design AADTT
for the driving lane if the pavement service life is 20 years.
Chapter 18 Solutions
Traffic and Highway Engineering
Ch. 18 - Prob. 1PCh. 18 - Prob. 2PCh. 18 - Prob. 3PCh. 18 - Prob. 4PCh. 18 - Given the specifications for an asphaltic concrete...Ch. 18 - Given the particle size distributions of two...Ch. 18 - Given the particle size distributions of two...Ch. 18 - Given four different types of aggregates to be...Ch. 18 - Prob. 9PCh. 18 - Prob. 10P
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- Discuss about the effect of overloading of trucks to the pavement condition.arrow_forward3. You have been asked to design the pavement for an access highway to a major truck terminal. The design daily truck traffic consists of the following: 80 single axles at 22,500 lb each, 570 tandem axles at 25,000 lb each, 50 tandem axles at 39,000 lb each, and 80 triple axles at 48,050 lb each. The highway is to be designed with rigid pavement having a modulus of rupture of 600 lb/in? and a modulus of elasticity of 5 million lb/in. The reliability is to be 95%, the overall standard deviation is 0.4, the drainage coefficient is 0.9, APSI is 1.7 (with a TSI of 2.5). and the load transfer coefficient is 3.2. The modulus of subgrade reaction is 200 lb/in'. If a 20-year design life is to be used, determine the required slab thickness.arrow_forwardDiscuss various tests used for the quality of bitumen used in flexible pavements Subject. Transportation engineering.arrow_forward
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- Q: What is Strategic Highway Research Program? What are the main causes of asphalt aging? Discuss in detail. Subject: Pavement Structure and design. Program: MS in Transportation Engineering.arrow_forwardA pavement has a design life of 20 years and design traffic of 75 msa for a newly developing National Highway. Number of commercial vehicles after construction of pavement is 4200 vehicles per day. If vehicle damage factor is taken as 1.05 and annual rate of traffic growth is taken as 8%, then the value of lane distribution factor adopted is. (Round off to two decimal places).arrow_forwardAssume the OPI of non-interstate highways in the district is 70. The total lane-miles of interstate in this district are 500 miles while the total line-miles of non-interstate highways are 3,500 miles. What is the OPI of all pavements in the district?arrow_forward
- The pavement that need to be constructed is a six-lane divided highway. The present AADT (both directions) of 6000 vehicles is expected to grow at 5% per annum. The percent of traffic on the design lane is 45%. Determine the design ESAL if the design life is 20 years and the vehicle mix is: Passenger cars (1000 lb/axle) 60% 2-axle single-unit trucks (5000 lb/axle) = 30% 3-axle single-unit trucks (7000 lb/axle) 10% %3D Dosign the navement (with the design ESAL calculated in auestion 3a)arrow_forwarda) You have to repair the wearing surface during wet weather using asphalt which can be used without additional heat. Now, which type of asphalt will you prefer? Write short note on such type of asphalt. b) What is macadam road? Differentiate between water-bound macadam and bituminous macadam. c) Briefly describe one of the special soil-related problems in many areas of the United States and what kind of preventive measures can be taken for minimizing such problem. PART Barrow_forwardQ1) If the traffic using the pavement grows at an annual rate of 4 present ,determine the design ESAL for 20 years, if ESAL for one year =78900?arrow_forward
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