A northbound direction on an interstate highway consists of four lanes of flexible pavement. It is conservatively designed with 10 inch sandmix asphalt surface, 10 in crushed stone base, and 10 inch crushed stone subbase (all drainage coefficients are 1.0). The subgrade CBR is 3, the overall standard deviation is 0.4, and the reliability is 95%. The initial PSI is 4.6 and the final PSI is 2.5. Daily total northbound road traffic consists of 51,000 cars (each with two 2kip single axles), 840 buses ((each with two 20kip single axles) and 1000 heavy trucks (each with one 12kip single axle and two 34kip tandem axles). How many years was this pavement designed to last?

A northbound direction on an interstate highway consists of four lanes of flexible pavement. It is conservatively designed with 10 inch sandmix asphalt surface, 10 in crushed stone base, and 10 inch crushed stone subbase (all drainage coefficients are 1.0). The subgrade CBR is 3, the overall standard deviation is 0.4, and the reliability is 95%. The initial PSI is 4.6 and the final PSI is 2.5. Daily total northbound road traffic consists of 51,000 cars (each with two 2kip single axles), 840 buses ((each with two 20kip single axles) and 1000 heavy trucks (each with one 12kip single axle and two 34kip tandem axles). How many years was this pavement designed to last?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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