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One pavement structure consisting of 2 pavement layers over subgrade has a required structural number (SN) of 5.60. The layer coefficient for asphalt surface (a₁) is 0.44 and the layer coefficient for the granular base (a2) is 0.14. The drainage modifying factor for the granular base layer is 0.9. If assuming asphalt surface thickness of 6", calculate the thickness of the granular base layer. (Round up to the nearest inch and fill in the blank with a number only.) 5

One pavement structure consisting of 2 pavement layers over subgrade has a required structural number (SN) of 5.60. The layer coefficient for asphalt surface (a₁) is 0.44 and the layer coefficient for the granular base (a2) is 0.14. The drainage modifying factor for the granular base layer is 0.9. If assuming asphalt surface thickness of 6", calculate the thickness of the granular base layer. (Round up to the nearest inch and fill in the blank with a number only.) 5

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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One pavement structure consisting of 2 pavement layers over subgrade has a required structural number (SN) of 5.60. The layer coefficient for asphalt surface (a₁) is 0.44 and the layer coefficient for the granular base (a2) is 0.14. The drainage modifying factor for the granular base layer is 0.9. If assuming asphalt surface thickness of 6", calculate the thickness of the granular base layer. (Round up to the nearest inch and fill in the blank with a number only.) 5
Transcribed Image Text:One pavement structure consisting of 2 pavement layers over subgrade has a required structural number (SN) of 5.60. The layer coefficient for asphalt surface (a₁) is 0.44 and the layer coefficient for the granular base (a2) is 0.14. The drainage modifying factor for the granular base layer is 0.9. If assuming asphalt surface thickness of 6", calculate the thickness of the granular base layer. (Round up to the nearest inch and fill in the blank with a number only.) 5
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