Q2: tire with 700 kPa air pressure distributes a load over an area with a circular contact radius, a, of 130mm. The pavement was constructed with a material that has a modules of elasticity of 345000 kPa &nd a Poisson ratio of 0.45 and thickness of 30cm. Calculate the radial-horizontal stress and deflection at a point the pavement surface under the center of the tire load. Also, calculate the radial-horizontal stress and deflection at a point at a depth of half pavement layer way from the centre of the tire load. (USE: Ahlvin and Ulery equations).

Q2: tire with 700 kPa air pressure distributes a load over an area with a circular contact radius, a, of 130mm. The pavement was constructed with a material that has a modules of elasticity of 345000 kPa &nd a Poisson ratio of 0.45 and thickness of 30cm. Calculate the radial-horizontal stress and deflection at a point the pavement surface under the center of the tire load. Also, calculate the radial-horizontal stress and deflection at a point at a depth of half pavement layer way from the centre of the tire load. (USE: Ahlvin and Ulery equations).

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Q3/Choose the correct answer 1. In general PSI for flexible pavement depend on............ Va. Cracking, Patching and Rutting b. Cracking and Patching c. Patching and Rutting d. Rutting 2. The Maximum contraction joint spacing for plain jointed concrete pavement is C. 3.5 m b. 4.5 m c. 5.5 m d. Depends on traffic load 3. The relationship between A psi and age of pavement is...... a. A psi co age Apsi ∞ (1/age) c. A psi 02(1/age) d. Non of the above 4. The surface of the pavement should be a. Smooth b. Rough 5. Which type of aggregates gives good workability? a. Round b. Flaky c. Angular 6. Rutting may be avoided by a. Good compaction . Sufficient enough to resist skid b. Good drainage 7. Bleeding may be avoided by a. Water voids b. Air voids c. Asphalt type 12. Tie bars in cement concrete pavements are at a. Expansion joints d. All the above acceptable c. High filler percent All the above 8. The good drainage in pavement can La Increase the pavement life b. Decrease the pavement life…
A cement concrete pavement of a certain thickness laid over a sub grade has a radius of relative stiffness 85 cm. If the thickness of the pavement were to be doubled, what would be the percentage reduction in the flexural stress by the Westergaard's corner load formula under wheel load P. Given that the area of the tyre contact (assumed circular) is 1540 sq. Cm.
Circly was used to analyse a pavement structure. The horizontal tensile strain at the bottom of a subbase made of lean mix (lean rolled ) concrete was 106 microstrain. Assume RF = 1 Estimate the allowable number of standard load repetition.
Calculate the equivalent radius of the contact area of tires considering the wheel load is 60 kN.Allowable bearing pressure on the base of the pavement is approximately 0.20 MPa and thethickness of pavement is calculated as 160 mm. Round up the answer in 10 mm interval
A rigid pavement is to be used to carry a wheel load of 51.13 kN. Enough dowels will be used across the joint. What will be the difference in thickness (in mm) between the edge and the center of the pavement? The allowable tensile strength of concrete is 1.32 Mpa
A rigid pavement has a wheel load capacity of 53.96 kN. The allowable tensile stress of concrete is 1.37 MPa. Determine the thickness (cm) of the pavement if dowels are negligible. Express your answer in 1 decimal place.
An asphalt pavement has a typical cross-section shown in Figure SPC-802. The maximum permissible stresses of the road materials are as follows: 1. Base allowable bearing pressure Subgrade allowable pressure 0.18 MPa 0.50 MPa Determine the following: Maximum allowable static wheel load, W that can be applied on the surface layer if the radius of contact between tire and pavement is 186 mm. The actual bearing stress induced on the base course layer when subgrade reaches maximum allowable pressure. c. The actual bearing stress induced on the subgrade when a static wheel load of 104 kN is imposed on the pavement. a. b. 50 mm Asphalt Base 180 mm 3.20 m Subgrade Figure SPc-802 Typical Road Cross-Section
8. A rigid pavement concrete slab is shown in the given figure. Determine the stress and also max. deflection due to corner loading h 10 in. k = 100 pci h 10 in, a = 6 in. 9. Repeat problem (8) for interior loading case as shown in the given figure: S k= 100 pci h = 10 in. k = 100 pci a = 6 in. a 6in. 10,000 lb %i 4₁ 10,000 lb 10. Repeat problem (3) for edge loading cases (Circular or semi circular) as shown in the given figure: 110,000 lb %c = ? D. ? e = ? = ? 11. A section of a highway with length of 10 Km was evaluated using the Pavement Condition Rating Methods. The existing distresses along with this section are presented in the given photos. The severity and extent levels of each distress are given with the photo of the specified distress. The PCR form rating is also given.
Subject : 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?
A dual wheel having a load per tire of 5000 Ib, 70 psi pressure and μ = 0.5. Calculate thetotal pavement deflections due to the dual wheel by one-layer theory at the followingradial distances from the centerline of one tire: r=0, 3.5,10.5. (Use Pavement Thickness= 8in).