Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Chapter 19, Problem 18P
To determine
The expected rut depth of the fourth layer.
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A pavement element along Thika road of 100x150x200 mm was subjected to an equalall round pressure of 120kn/m2 and axial load of 2.5KN in the X-direction. The changesin length are 0.92mm in X-direction, 0.27mm in the Y-direction and 0.18mm in the Z direction. Calculate thei. Elastic theory ratio, Eii. Poisson’s ratio,iii. Bulk Modulus, K
The maximum wheel load that the pavement could carry is 120 kN. If the contact radius of the wheel is assumed to be 250 mm, and subgrade bearing capacity is equivalent to 0.24 Megapascals, calculate the subgrade layer thickness of the flexible pavement in mm using the 45-deg cone pressure distribution method.
Please solve the below question and give the solution in m3/day/m2 only not in feets. please solve it as early as possible.
Determine the ground water infiltration rate for a new four-lane pavement with the following characteristics:
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- Design of Pavement: The thickness of a concrete pavement slab is 20 cm and has modulus of elasticisty and poisson's ratio of 3x105 kg/cm2 and 0.15, respectively. Determine the radius of relative stiffness of the slab if it is resting on a subgrade of 5 kg/cm3 modulus.arrow_forwardDesign the thickness of a pavement to carry a wheel load of 52kN based on the following conditions and type of pavement. A rigid pavement with an allowable tensile stress of concrete is 1.8 MPa. Neglect effect of dowels. Use Olders Theory. Assume sufficient dowels are used across the joints. Used Olders Theory. A flexible pavement with an allowable subgrade pressure of 0.14MPa and the max. tire pressure equal to 0.52MPa. This pressure is assumed to be uniformly distributed over the area of tire contact on the roadway according to the principle of cone pressure distribution. A pavement with maximum CBR value of 8% for the subgrade soil supporting this load. The tire pressure is equal to 4kg/cm².Use U.S. Corps of Engineers Formula.arrow_forward3) Differentiate function of bound and unbound layer of flexible pavement.arrow_forward
- A 12-in. (30.48-cm) pavement slab has a modulus of elasticity of 4 million psi (27.58 GPa) and a Poisson ratio of 0.40. The pavement is on a soil with a modulus of subgrade reaction equal to 300 pci (81.45 N/cm3). A wheel load of 9000 lb (22.86 kN) is applied and the radius of circular load is 5 in. (12.7 cm). What would the interior and edge stresses be, and what would the interior and edge slab deflections be?arrow_forwardi need an answer immediately. thank you Design the thickness of a pavement to carry a wheel load of 52kN based on the following conditions and type of pavement. A pavement with maximum CBR value of 8% for the subgrade soil supporting this load. The tire pressure is equal to 4kg/cm².Use U.S. Corps of Engineers Formula.arrow_forwardA specific subgrade layer of a flexible pavement has thickness equivalent t to 300 mm, if the contact radius of the wheel is assumed to be 250 mm and subgrade bearing capacity is equivalent to 0.24 Megapascals, calculate the maximum wheel load in kN, the pavement is allowed to carry.arrow_forward
- A dual wheel having a load per tire of 4000 Ib, 80 psi pressure and μ = 0.5. Calculate thetotal pavement deflections due to the dual wheel by two layer theory at the followingradial distances from the centerline of one tire: r=0, 7,14. Assume that E1 = 10 E2arrow_forwardSubject : Transportation Engineering Give me both a and b right solutions A 5 tonne wheel load is applied on a pavement and generates a surface deflection of 0.15 mm. (a) If the equivalent radius of tyre contact is 100 mm and Poisson’s ratio is 0.3, what is the pavement’s modulus of elasticity? (b) If the pavement is 125 mm thick, what is the vertical stress at the top of the subgrade?arrow_forwardComparing Rigid and Flexible Airport Pavement .arrow_forward
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