1. Give a summary of rigid pavement design procedure by AASHTO method (1993), and describe the variables used in the method.
DESIGN OF A RIGID PAVEMENT
1. Give a summary of rigid pavement design procedure by AASHTO method (1993), and
describe the variables used in the method.
2. Explain the CBR test; how to conduct the test and its purposes. Where are the usages of
test results in practical applications? Explain its advantages and disadvantages.
3. Determine the thickness of a rigid pavement (thickness of concrete slab) by using the
data provided below:
DATA PROVIDED:
1. Cumulative 18kips ESAL = 5.000.000
2. Overall standard deviation = 0.3
3. Reliability = 95%
4. Design serviceability loose =1.7
5. Drainage coefficient = 1
6. Load transfer coefficient = 3.2
7. Mean concrete modulus of rupture = 650 psi
8. Elastic modulus of the concrete to be used = 5.000.000psi
9. Results of CBR test on subgrade material in the laboratory (Table 1):
10. Standard force-penetration data.
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