4.13) A rigid pavement is being designed with the same parameters as used in Problem 4.5. The modulus of subgrade reaction is 300 1b/in? and the slab thickness is determined to be 8.5 inches. The load transfer coefficient is 3.0, the drainage coefficient is 1.0, and the modulus of elasticity is 4 million Ib/in?. What is the design modulus of rupture? (Assume that any parameters not given in this problem are the same as those given in Problem 4.5.)4.5 has been added for reference. 4.5 A flexible pavement was designed for thefollowing daily traffic with a 12-year design life: 1300single axles at 8000 lb each, 900 tandem axles at15,000 lb each, 20 single axles at 40,000 lb each, and200 tandem axles at 40,000 lb each. The highway wasdesigned with 4 inches of HMA wearing surface,4 inches of hot-mix asphaltic base, and 8 inches ofcrushed stone subbase. The reliability was 70%,overall standard deviation was 0.5, APSI was 2.0(with a TSI of 2.5), and all drainage coefficients were1.0. What was the soil resilient modulus of thesubgrade used in design?

k = modulus of subgrade reaction = 300 lb/in3D = Slab thickness = 8.5 inJ = Load transfer…

Answered: 4.5 A flexible pavement was designed…

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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4.13) A rigid pavement is being designed with the same parameters as used in Problem 4.5. The modulus of subgrade reaction is 300 1b/in? and the slab thickness is determined to be 8.5 inches. The load transfer coefficient is 3.0, the drainage coefficient is 1.0, and the modulus of elasticity is 4 million Ib/in?. What is the design modulus of rupture? (Assume that any parameters not given in this problem are the same as those given in Problem 4.5.)

4.5 has been added for reference.

4.5 A flexible pavement was designed for the
following daily traffic with a 12-year design life: 1300
single axles at 8000 lb each, 900 tandem axles at
15,000 lb each, 20 single axles at 40,000 lb each, and
200 tandem axles at 40,000 lb each. The highway was
designed with 4 inches of HMA wearing surface,
4 inches of hot-mix asphaltic base, and 8 inches of
crushed stone subbase. The reliability was 70%,
overall standard deviation was 0.5, APSI was 2.0
(with a TSI of 2.5), and all drainage coefficients were
1.0. What was the soil resilient modulus of the
subgrade used in design?

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