A traffic surveying conducted on a road yield an average daily traffic countof 5000 vehicle. The axle load distribution on the same road is given in thefollowing table.Axle load (tones) Frequency of traffic (f)181014201035815620...The design period of the road is 15 years. The yearly Traffic growth rateis 7.5% the load safety factor (LSF) is 1.3. If the vehicle damage factor (VDF)is calculated from the above data, the design traffic (In million standard axleload MSA) is

Given:Design periodn=15 yearsTraffic growth rater=7.5%Load safety factorLSF=1.3Load distribution…

A traffic surveying conducted on a road yield an average daily traffic count of 5000 vehicle. The axle load distribution on the same road is given in the following table. Axle load (tones) Frequency of traffic (f) 18 10 14 20 10 35 15 20 The design period of the road is 15 years. The yearly Traffic growth rate is 7.5% the load safety factor (LSF) is 1.3. If the vehicle damage factor (VDF) is calculated from the above data, the design traffic (In million standard axle load MSA) is

A traffic surveying conducted on a road yield an average daily traffic count of 5000 vehicle. The axle load distribution on the same road is given in the following table. Axle load (tones) Frequency of traffic (f) 18 10 14 20 10 35 15 20 The design period of the road is 15 years. The yearly Traffic growth rate is 7.5% the load safety factor (LSF) is 1.3. If the vehicle damage factor (VDF) is calculated from the above data, the design traffic (In million standard axle load MSA) is

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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A six-lane divided highway is to be designed to replace an existing highway. The present AADT (both directions) of 5,300 vehicles is expected to grow at 5 percent per annum. Assume SN = 4 and pt = 2.5. The percent of traffic on the design lane is 45 percent. Determine the design ESAL if the design life is 20 years and the vehicle mix is as follows. (Assume the contribution of passenger car traffic to the total ESAL is negligible. Use single-axle load equivalency factors for 2-axle and 3-axle trucks.) Passenger cars (1,000 lb/axle)=59%2-axle single-unit trucks (5,000 lb/axle)=25%3-axle single-unit trucks (7,000 lb/axle)=16%
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Answer the following question.
Determine the LOS on a regular weekday on a 1.5-mile segment of an 8-lane freeway (four lanes in each direction) in rolling terrain. Use the following data.
A. Given 20 years Design years for 2 direction of road Number of lanes = 2 lanes ADT = 3500 %3D Calculate the ESAL for one direction of road 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
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 с 1.53 2.24 3.66 D 4.14
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A roadway project will be constructed in 2026 as flexible pavement, pt-2.5, expected SN= 4 and has a 20-year design life. Design work was done in 2021, with growth rate of 6%. The traffic survey gives axles loads shown in table above. Find the design ESAL according to AASHTO design method. Truck type Axle Category Type-1 1-single axle of 30 kips 1- tandem axle of 32 kips 1-single axle of 18 kips 2- tandem axle of 40 kips 1-single axle of 20 kips 1- tandem axle of 36 kips 1- tandem axle of 50 kips 2-single axle of 22 kips 1- tandem axle of 38 kips 2-single axle of 38 kips 1- tandem axle of 52 kips 2-single axle of 14 kips 1- tandem axle of 32 kips 1- triple axles of 50 kips 1-single axle of 40 kips 1- tandem axle of 32 kips CS Cams Typer triple axies of 58 kips Type-2 Type-3 Type-4 Type-5 Type-6 % Total AADT 9% 10% 7% 5% 3% 5% 4%