Homework Help is Here – Start Your Trial Now!
Engineering
Civil Engineering
1-581 is being continued eastbound in Roanoke. The existing freeway consists of two lanes in each direction of flexible pavement with a structural number of 5 and a subgrade CBR of 6. If the pavement is conservatively designed, how many years longer will the pavement last if a third lane is added given the following conditions for the updated design? An overall standard deviation of 0.35 and reliability of 90%. • Initial design PSI of 4.6, with the final PSI of 2.5. Anticipated design traffic is: 23,000 vehicles per day, where the design passenger car has two 1,000-lb single axles. • 3,000 trucks per day, where the design truck has a 12,000-lb single axle and two 32,000-lb tandem axles.

1-581 is being continued eastbound in Roanoke. The existing freeway consists of two lanes in each direction of flexible pavement with a structural number of 5 and a subgrade CBR of 6. If the pavement is conservatively designed, how many years longer will the pavement last if a third lane is added given the following conditions for the updated design? An overall standard deviation of 0.35 and reliability of 90%. • Initial design PSI of 4.6, with the final PSI of 2.5. Anticipated design traffic is: 23,000 vehicles per day, where the design passenger car has two 1,000-lb single axles. • 3,000 trucks per day, where the design truck has a 12,000-lb single axle and two 32,000-lb tandem axles.

Traffic and Highway Engineering
Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter20: Design Of Rigid Pavements
Section: Chapter Questions
Problem 26P
See similar textbooks
icon
Related questions
Question

on paper please 

1-581 is being continued eastbound in Roanoke. The existing freeway consists of two lanes in each direction of flexible pavement with a structural number of 5 and a subgrade CBR of 6. If the pavement is conservatively designed, how many years longer will the pavement last if a third lane is added given the following conditions for the updated design? An overall standard deviation of 0.35 and reliability of 90%. • Initial design PSI of 4.6, with the final PSI of 2.5. Anticipated design traffic is: 23,000 vehicles per day, where the design passenger car has two 1,000-lb single axles. • 3,000 trucks per day, where the design truck has a 12,000-lb single axle and two 32,000-lb tandem axles.
Transcribed Image Text:1-581 is being continued eastbound in Roanoke. The existing freeway consists of two lanes in each direction of flexible pavement with a structural number of 5 and a subgrade CBR of 6. If the pavement is conservatively designed, how many years longer will the pavement last if a third lane is added given the following conditions for the updated design? An overall standard deviation of 0.35 and reliability of 90%. • Initial design PSI of 4.6, with the final PSI of 2.5. Anticipated design traffic is: 23,000 vehicles per day, where the design passenger car has two 1,000-lb single axles. • 3,000 trucks per day, where the design truck has a 12,000-lb single axle and two 32,000-lb tandem axles.
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Traffic and Highway Engineering
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS