The mode of transportation which was the primary contributor to the demise of road construction in the United States in the early 19 th century and the advantages offered by the new mode.

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Q.2- Design a flexible pavement by AASHTO method and draw typical cross section of the flexible Pavement for rural highway has following data: - Elastic modulus of Asphalt is 450000 Ib/in², Mr. of base-31000 psi, Mr. of subbase=13500 psi, CBR of base-100 CBR of subbase=22 subbase of subgrade =6 water removed with one week Percentage of time pavement structure is exposed to moisture levels-30% reliability=95% Standard deviation=0.45 initial serviceability=4.2 terminal serviceability=2.5 and ESAL=2*106 subgrade =1500 CBR Mr كلية . المنصور الجامعة

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Chapter 1, Problem 19P

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The mode of transportation which was the primary contributor to the demise of road construction in the United States in the early 19th century and the advantages offered by the new mode.

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Q.2- Design a flexible pavement by AASHTO method and draw typical cross section of the flexible Pavement for rural highway has following data: - Elastic modulus of Asphalt is 450000 Ib/in², Mr. of base-31000 psi, Mr. of subbase=13500 psi, CBR of base-100 CBR of subbase=22 subbase of subgrade =6 water removed with one week Percentage of time pavement structure is exposed to moisture levels-30% reliability=95% Standard deviation=0.45 initial serviceability=4.2 terminal serviceability=2.5 and ESAL=2*106 subgrade =1500 CBR Mr كلية . المنصور الجامعة

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