Using the AASHTO design method, determine a suitable thickness of the concrete pavement if the working stress of the concrete is 600 lb/in2 and the modulus of elasticity is 5 106 lb/in2 .
A concrete pavement is to be constructed for a four-lane urban expressway on a subgrade with an effective modulus of subgrade reaction k of 100 lb/in3. The accumulated equivalent axle load for the design period is 3.25 106 . The initial and terminal serviceability indices are 4.5 and 2.5, respectively. Using the AASHTO design method, determine a suitable thickness of the concrete pavement if the working stress of the concrete is 600 lb/in2 and the modulus of elasticity is 5 106 lb/in2 . Take the overall standard deviation So as 0.30, the load-transfer coefficient J as 3.2, the drainage coefficient as 0.9, and R 95%.
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The post Using the AASHTO design method, determine a suitable thickness of the concrete pavement if the working stress of the concrete is 600 lb/in2 and the modulus of elasticity is 5 106 lb/in2 . appeared first on BEST NURSING TUTORS .