Q6. Using the AASHTO flexible pavement design procedure, desigu (i.e. thicknesses of the different layers) a pavement for a nural interstate highway (i.e. it is a freeway). The expected design ESAL is 8x10 . The pavement structure is to consist of asphalt concrete with a resilient modulus of 400,000 psi (with a corresponding structural layer coefficient of 0.42), a granular base with a resilient modulus of 34,000 psi, and a granular subbase with a resilient modulus of (15,000+ last digit of your Registration No.) psi. The resilient modulus of the subgrade is 7,000 psi. A Structural Number SN, = 5.4 was obtained using a subgrade M, = 7000 psi using the AASHTO 1993 flexible pavement design method. Also, a Structural Number SN, = 4.3 was obtained using a Subbase M, =15000 psi . Finally, a Structural Number SN, = 3.2 was obtained using a Base M, = 34000 psi . It is estimated that it will take a week for water to drain from the pavement and that the pavement will be saturated more than 25 percent of the time. The structural layer coefficients for the base and subbase layers are given by: a, = 0.249(log, M, )-0.977 M, =resilient modulus of the base (psi) a, =layer coefficient for base a, = 0.227(log, M,)-0.839 M, =resilient modulus of the subbase (psi) a, =layer coefficient for subbase
Q6. Using the AASHTO flexible pavement design procedure, desigu (i.e. thicknesses of the different layers) a pavement for a nural interstate highway (i.e. it is a freeway). The expected design ESAL is 8x10 . The pavement structure is to consist of asphalt concrete with a resilient modulus of 400,000 psi (with a corresponding structural layer coefficient of 0.42), a granular base with a resilient modulus of 34,000 psi, and a granular subbase with a resilient modulus of (15,000+ last digit of your Registration No.) psi. The resilient modulus of the subgrade is 7,000 psi. A Structural Number SN, = 5.4 was obtained using a subgrade M, = 7000 psi using the AASHTO 1993 flexible pavement design method. Also, a Structural Number SN, = 4.3 was obtained using a Subbase M, =15000 psi . Finally, a Structural Number SN, = 3.2 was obtained using a Base M, = 34000 psi . It is estimated that it will take a week for water to drain from the pavement and that the pavement will be saturated more than 25 percent of the time. The structural layer coefficients for the base and subbase layers are given by: a, = 0.249(log, M, )-0.977 M, =resilient modulus of the base (psi) a, =layer coefficient for base a, = 0.227(log, M,)-0.839 M, =resilient modulus of the subbase (psi) a, =layer coefficient for subbase
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Transcribed Image Text:Please solve this question in step by step- It is transportation-2 Civil engineering
My last digit of my registration number =2
Q6. Using the AASHTO flexible pavement design procedure, design (i.e. thicknesses of the
different layers) a pavement for a rural interstate highway (i.e. it is a freeway). The expected
design ESAL is 8x10 . The pavement structure is to consist of asphalt concrete with a resilient
modulus of 400,000 psi (with a corresponding structural layer coefficient of 0.42), a granular
base with a resilient modulus of 34,000 psi, and a granular subbase with a resilient modulus of
(15,000+ last digit of your Registration No.) psi. The resilient modulus of the subgrade is 7,000
psi. A Structural Number SN, = 5.4 was obtained using a subgrade M, = 7000 psi using the
AASHTO 1993 flexible pavement design method. Also, a Structural Number SN, = 4.3 was
obtained using a Subbase M, =15000 psi . Finally, a Structural Number SN, = 3.2 was obtained
using a Base M, = 34000 psi .
It is estimated that it will take a week for water to drain from the pavement and that the
pavement will be saturated more than 25 percent of the time.
The structural layer coefficients for the base and subbase layers are given by:
a, = 0.249(log, M, )-0.977
M, =resilient modulus of the base (psi)
a, =layer coefficient for base
a, = 0.227(log, M, )-0.839
M, =resilient modulus of the subbase (psi)
a, =layer coefficient for subbase
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 7 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning