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A flexible pavement is being designed for a traffic load of 1.0 million 18-kip ESALs. The initial PSI is 4.0 and the TSI is 2.5. Given that the standard deviation of traffic is 0.4 and MR is 20, what is the structural number needed if the reliability is to be 80%? Please consider using the below nomograph.

A flexible pavement is being designed for a traffic load of 1.0 million 18-kip ESALs. The initial PSI is 4.0 and the TSI is 2.5. Given that the standard deviation of traffic is 0.4 and MR is 20, what is the structural number needed if the reliability is to be 80%? Please consider using the below nomograph.

Structural Analysis
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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Reliability, R(%) Overall standard deviation, S 99.9 99 90 www alimba - Flexible pavement nomograph single-axle load applications, Wa (millions) hakuna 10 5.0 T₂ 1.0 Effective roadbed soil Resilient modulus, M, (ks) o Example: 989 with ayo W18-5x106 R = 95% S-0.35 M₂ = 5000 psi APSI 1.9 Solution: SN 5.0 Design serviceability loss, APSI MIL 2.5 2.0 3.0 987654 1.5 2 6.5 5.5 4.5 3.5 2.5 1.5 Design structural number, SN 1
Transcribed Image Text:Reliability, R(%) Overall standard deviation, S 99.9 99 90 www alimba - Flexible pavement nomograph single-axle load applications, Wa (millions) hakuna 10 5.0 T₂ 1.0 Effective roadbed soil Resilient modulus, M, (ks) o Example: 989 with ayo W18-5x106 R = 95% S-0.35 M₂ = 5000 psi APSI 1.9 Solution: SN 5.0 Design serviceability loss, APSI MIL 2.5 2.0 3.0 987654 1.5 2 6.5 5.5 4.5 3.5 2.5 1.5 Design structural number, SN 1
A flexible pavement is being designed for a traffic load of 1.0 million 18-kip ESALs. The initial PSI is 4.0 and the TSI is 2.5. Given that the standard deviation of traffic is 0.4 and MR is 20, what is the structural number needed if the reliability is to be 80%? Please consider using the below nomograph.
Transcribed Image Text:A flexible pavement is being designed for a traffic load of 1.0 million 18-kip ESALs. The initial PSI is 4.0 and the TSI is 2.5. Given that the standard deviation of traffic is 0.4 and MR is 20, what is the structural number needed if the reliability is to be 80%? Please consider using the below nomograph.
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