Traffic And Highway Engineering
5th Edition
ISBN: 9781133605157
Author: Garber, Nicholas J., Hoel, Lester A.
Publisher: Cengage Learning,
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Question
Chapter 20, Problem 8P
To determine
The tensile stress imposed at night by wheel load of a concrete pavement.
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Students have asked these similar questions
A cement concrete pavement has a thickness of 24 cm and has two lanes of total width 7.2 m, with
a longitudinal joint. Design the dimension and spacing of the bars, using the following data:
(i) Allowable working stress in steel in tension = 1400 kg/cm²
(ii) Unit weight of concrete = 2400 kg/m³
(iii) Coefficient of friction
= 1.5
(iv) Allowable bond stress in concrete = 24.6 kg/cm²
A cement concrete pavement has a
thickness of 20 cm and has 2 lanes of
7,2 m with a longitudinal joint along
the centre. Assuming allowable working
stress of steel in tension = 1400
kg/cm², Unit weight of concrete =
2400 kg/m³, Co-efficient of friction
of = 1,5. Allowable bond stress in
deformed bars
24.6 kg/cm², Find
the length and spacing of tie bar if
diameter of bar is 1 cm.
=
A tyre with 230 kPa air pressure distributes a load over an area with circular contact radius of 200 mm. The pavement was constructed with a material that has a modulus of elasticity of 450 MPa and a Poisson's ratio of 0.40.
1.1 Calculate the radial-horizontal stress and deflection at a point on the pavement surface under the center of the tyre load. [Function values table: A = 1 B = 0 C = 0 E = 0.5 H = 2 ]
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Chapter 20 Solutions
Traffic And Highway Engineering
Ch. 20 - Portland cement concrete consists of what four...Ch. 20 - List and briefly describe the five main types of...Ch. 20 - What is the main requirement for the water used in...Ch. 20 - Prob. 4PCh. 20 - Prob. 5PCh. 20 - Prob. 6PCh. 20 - Prob. 7PCh. 20 - Prob. 8PCh. 20 - Prob. 9PCh. 20 - Prob. 10P
Ch. 20 - Prob. 11PCh. 20 - Prob. 12PCh. 20 - Repeat Problem 20-12, with the slab containing...Ch. 20 - Prob. 14PCh. 20 - Prob. 15PCh. 20 - Prob. 16PCh. 20 - Prob. 17PCh. 20 - Prob. 18PCh. 20 - An existing rural 4-lane highway is to be replaced...Ch. 20 - Prob. 20PCh. 20 - Prob. 21PCh. 20 - Prob. 22PCh. 20 - Prob. 23PCh. 20 - Prob. 24PCh. 20 - Prob. 25PCh. 20 - Prob. 26PCh. 20 - Prob. 27P
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- A tire load with an air pressure of 132.6 psi and weighing 15,000 lbs is in contact with a flexible pavement that has the following properties: Modulus of elasticity: 45,000 psiPoisson ratio: 0.58 a. Calculate the stress at a depth of 4 in. and radial distance of 6 in. using Boussinesq equation. b. Calculate the vertical stress, radial stress, and deflection on the pavement surface under the center of the load. c. Calculate the vertical stress, radial stress, and deflection at a depth of 4.8 in and radial distance of 7.2 in.arrow_forwardDetermine the thickness of a rigid pavement, which has 3.5 meter width lane. The pavement is to carry a maximum wheel load of 55 kN and provided with dowels. Compressive strength of concrete is 20.5 MPa, and the allowable tensile stress is 6% of the compressive strength. Round up answer. (e.g., 265.8 = 270, 262.3=265)arrow_forwardThe spacing between the contraction joints of a CC pavement is 3.5 m. Determine the stress developed in the pavement (in kg/cm²) due to contraction if the coefficient of friction between the bottom of the pavement and the supporting layer is 1.05 and the unit weight of concrete is 2450 kg/m³.arrow_forward
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