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 x 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 x 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%
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 x 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 x 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%
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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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 x 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 x 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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