Current truck traffic volumes (in AADTT) for a six-lane highway are shown in the table below. An asphalt pavement with a 20 year design life is to be designed according to the Hveem method. It is assumed that traffic volumes for each truck classification will grow linearly by 20 percent over the next 20 years. Current traffic Expanded Vehicle Type ESAL constant 20 year ESAL volume (AADTT) Volume 2-axle trucks 500 3-axle trucks 300 4-axle trucks 150 5-axle or more trucks 750 Total

Current truck traffic volumes (in AADTT) for a six-lane highway are shown in the table below. An asphalt pavement with a 20 year design life is to be designed according to the Hveem method. It is assumed that traffic volumes for each truck classification will grow linearly by 20 percent over the next 20 years. Current traffic Expanded Vehicle Type ESAL constant 20 year ESAL volume (AADTT) Volume 2-axle trucks 500 3-axle trucks 300 4-axle trucks 150 5-axle or more trucks 750 Total

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter21: Pavement Management

Section: Chapter Questions

Problem 4P

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Calculate ESAL in the design lane for 20 year design period for asphalt (assume TSI= 2.5) and concrete (assume TSI= 2.5 and D = 9 inch) pavement, respectively, based on the initial traffic of single axle-loads shown below, given that the yearly rate of growth 2%, Direction Distribution Factor -50%, Lane Distribution Factor = 75% Axle Load Number (kip) 18 20 22 24 26 28 30 32 34 per day 61.4 47.2 21.4 12.9 6.1 2.9 1.2 0.7 0.3
A highway is projected to carry 16,000 vehicles per day (10% of which will be 3-axle trucks with an axle load equivalency factor of 0.088) upon opening and 4% growth rate over the next 25 years. If an estimated 40% of traffic is to be in the design lane, the number of ESALS to be used in pavement design is: O 1.84 x 106 O 2.57 x 106 O 2.57 x 107 O 8.57 x 105 O 6.42 x 106
A pavement designer has arrived at a design traffic of 100 million standard axles for a newly developing national highway as per IRC:37 guidelines using the following data: design life = 15 years, commercial vehicle count before pavement construction = 4500 vehicles/day, annual traffic growth rate = 8%. The vehicle damage factor used in the calculation was A B 1.53 2.24 с 3.66 D 4.14
Design is required for a new pavement to be constructed in 2010. The annual average daily traffic for commercial vehicles on the opening day will be 2000. Growth rate = 4% Design Life = 20 years Solve for the design traffic in msa using 2 decimal places.
Q1) 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?
From the traffic counting in 2020, the average commercial vehicle per day is 500 (10% commercial vehicle) and the traffic growth rate is estimated at 5%. A pavement needs to be designed for 15 years and is expected to open for the public in 2022. Using ATJ 5/85 method, estimate the total number of vehicles per direction during the first year of service. * 100740 213669 O 1108240 O 2173824
Calculate the design traffic in million standard axles (MSA) and commercial vehicles per day (CVD) required for design of flexible pavement as per current Indian procedure (revised IRC method) for the following data: (i) Annual daily commercial vehicles at last count (May 2008) = 200 (ii) Rate of traffic growth = 6% (iii) Design life = 10 years (iv) Vehicle damage factor = 2 (v) The road is proposed to be completed in May 2011.
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 ● ● 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.
The following data pertains to the number of commercial vehicles per day for the design of a flexible pavement for a national highway as per IRC:37-1984: en Type of commercial vehicles Two axle trucks Tandem axle trucks Number of vehicle per day considering the number of lanes 2000 200 SE Vehicle Damage Factor 5 leum 6 ich Assuming a traffic growth factor of 7.5% per annum for both the types of vehicles, the cumulative number of standard axle load repetitions (in million) for a design life of ten years is
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.
section of a two-lane rural highway is to be realigned and replaced by a four-lane highway with a full-depth asphalt pavement. Consists of 40% trucks. If classification studies have shown that the truck factor can be taken as 0.45, design a suitable flexible pavement using the 1993 AASHTO procedure if the AADT on the design lane during the first year of operation is 1000. It is expected that construction will be completed five years from now, and pi =4.5 and pt = 2.5. Growth rate = 4%. Design life = 20 years. The pavement structure will be exposed to moisture levels approaching saturation 20% of the time, and it will take about one week for drainage of water. Effective CBR of the subgrade material is 7. CBR of the base and subbase are 70 (Mr=30000 lb/in2 ) and 22 (Mr=13500 lb/in2 ), respectively, and Mr for the asphalt mixture, 400,000 lb/in2 .
Q11. The first step in the process of pavement management is to: a) establishing project priorities b) secure data about the condition of each pavement section in the system. c) establishing options d) forecasting performance e) none of the answers Q12. A 8000 lb is placed on a two tires of a locked-wheel trailer. At a speed of 52 mil/h, 800 lb is required to move the device. The surface type assuming that treaded tires were used is: a) smooth b) fine-textured, rounded c) fine - textured, gritty d) coarse - textured, rounded e) coarse - textured, gritty