Problem 5: Design the pavement for a highway principal arterial road consisting of an asphalt concrete surface, a crushed gravel base, and a granular sub-base using the 1993 AASHTO design chart (Figure 8.22). The cumulative ESAL in the design lane for a design period of 10 years is only 69 for the peak hours of (7:00-8:30 AM and 2:00-3:30 PM).The area has fair quality drainage with 25% of the time the moisture level is approaching saturation. The effective roadhed soil resilient modulus is 10 ksi. The sub-base has a CBR value of 50, the resilient modulus of the base is 30,000 lb/in², and the resilient modulus of the asphalt concrete is 4.0 x 105 psi. Assume a reliability level of 90%, So of 0.40, Po of 4.6, and Pt of 3.0.

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Problem 5:-
Design the pavement for a highway principal arterial road consisting of an
asphalt concrete surface, a crushed gravel bäse, and a granular sub-base using
the 1993 AASHTO design chart (Figure 8.22). The cumulative ESAL in the
design lane for a design period of 10 years is only 69 for the peak hours of
(7:00-8:30 AM and 2:00-3:30 PM).The area has fair aumality draimage with
25% of the time the moisture level is approaching saturation. The effective
roadbed soil resilient modulus is 1O ksi. The suh-base has a CBR valuve of
50, the resilient modulus of the base is 30,000 lb/in" , and the resilient modulus
of the asphalt concrete is 4.0 x 10° psi. Assume a reliability level of 90%, So
of 0.40, Po of 4.6, and Pt of 3.0.
5
Transcribed Image Text:Problem 5:- Design the pavement for a highway principal arterial road consisting of an asphalt concrete surface, a crushed gravel bäse, and a granular sub-base using the 1993 AASHTO design chart (Figure 8.22). The cumulative ESAL in the design lane for a design period of 10 years is only 69 for the peak hours of (7:00-8:30 AM and 2:00-3:30 PM).The area has fair aumality draimage with 25% of the time the moisture level is approaching saturation. The effective roadbed soil resilient modulus is 1O ksi. The suh-base has a CBR valuve of 50, the resilient modulus of the base is 30,000 lb/in" , and the resilient modulus of the asphalt concrete is 4.0 x 10° psi. Assume a reliability level of 90%, So of 0.40, Po of 4.6, and Pt of 3.0. 5
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