MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Pavement Design knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The edge stress can be found out for a slab thickness of range 10-30 cm using design charts. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
Find the distance at which the maximum corner stress would occur if the following data is available.Modulus of elasticity of cement concrete, E = 2×105 kg/cm2Thickness of slab, h = 18 cmPoisson’s ratio, μ = 0.15Modulus of subgrade reaction, k = 6 kg/cm3Radius of contact area, a = 15 cm |
| A. | 80.89 cm |
| B. | 79.81 cm |
| C. | 76.87 cm |
| D. | 81.78 cm |
| Answer» C. 76.87 cm | |
| 3. |
At what distance from the apex of the slab corner does the maximum stress occur in a rigid pavement? |
| A. | \(X=2.58\sqrt{a}\) |
| B. | \(X=\sqrt{al}\) |
| C. | \(X=2.58\sqrt{al}\) |
| D. | \(X=2.58\sqrt{l}\) |
| Answer» D. \(X=2.58\sqrt{l}\) | |
| 4. |
In the design chart for finding corner stress by IRC, what parameter below is not constant? |
| A. | Poisson’s ratio |
| B. | Modulus of subgrade reaction |
| C. | Modulus of elasticity |
| D. | Wheel load |
| Answer» C. Modulus of elasticity | |
| 5. |
What is the critical stress at the edge of rigid pavement for the below data?Wheel load, P = 5100 kgModulus of elasticity, E = 2.1×105 kg/cm2Pavement thickness, h = 16 cmPoisson’s ratio, μ = 0.15Modulus of subgrade reaction, k = 7 kg/cm3Radius of contact area, a = 15 cm |
| A. | 31.82 kg/cm2 |
| B. | 38.12 kg/cm2 |
| C. | 31.28 kg/cm2 |
| D. | 38.21 kg/cm2 |
| Answer» B. 38.12 kg/cm2 | |
| 6. |
Find the corner stress for the data given below.Wheel load, P = 5500 kgPavement thickness, h = 20 cmRadius of relative stiffness, l = 65 kg/cm3Radius of contact area, a = 15 cm |
| A. | 29.97 kg/cm2 |
| B. | 29.79 kg/cm2 |
| C. | 27.97 kg/cm2 |
| D. | 27.79 kg/cm2 |
| Answer» E. | |
| 7. |
What is the modified equation for maximum stress at the corner? |
| A. | \(s_c=\frac{3P}{h^2} \left[1-(\frac{a\sqrt{2}}{l})\right]\) |
| B. | \(s_c=\frac{3P}{h^2} \left[1-{(\frac{a\sqrt{2}}{l})}^{1.5}\right]\) |
| C. | \(s_c=\frac{3P}{h^2} \left[1-{(\frac{a\sqrt{2}}{l})}^{1.2}\right]\) |
| D. | \(s_c=\frac{3P}{h^2} \left[1-{(\frac{a\sqrt{2}}{l})}^{0.2}\right]\) |
| Answer» D. \(s_c=\frac{3P}{h^2} \left[1-{(\frac{a\sqrt{2}}{l})}^{0.2}\right]\) | |
| 8. |
What is the critical stress at the interior of rigid pavement for the below data?Wheel load, P = 5100 kgModulus of elasticity, E = 3×105 kg/cm2Pavement thickness, h = 17 cmPoisson’s ratio, μ = 0.15Modulus of subgrade reaction, k = 7 kg/cm3Radius of contact area, a = 15 cm |
| A. | 22.80 kg/cm2 |
| B. | 20.85 kg/cm2 |
| C. | 23. 85 kg/cm2 |
| D. | 21.80 kg/cm2 |
| Answer» C. 23. 85 kg/cm2 | |
| 9. |
Compute the equivalent radius of resisting section if the radius of wheel load distribution is 15 cm and the pavement thickness is 15 cm. |
| A. | 16.04 cm |
| B. | 14.06 cm |
| C. | 14.60 cm |
| D. | 16.40 cm |
| Answer» C. 14.60 cm | |
| 10. |
When the value of the radius of wheel load distribution is ______, it is equal to the equivalent radius of resisting section. |
| A. | Greater than 1.724 |
| B. | Lesser than 1.724 |
| C. | Greater than 1.724h |
| D. | Lesser than 1.724h |
| Answer» D. Lesser than 1.724h | |
| 11. |
Find the radius of relative stiffness for the following data:Modulus of elasticity of cement concrete, E = 2×105 kg/cm2Thickness of slab, h = 15 cmPoisson’s ratio, μ = 0.15Modulus of subgrade reaction, k = 5 kg/cm3 |
| A. | 55.82 cm |
| B. | 58.25 cm |
| C. | 58.52 cm |
| D. | 52.85 cm |
| Answer» C. 58.52 cm | |
| 12. |
Slab deflection is considered to be the direct measurement of the pressure of the subgrade. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 13. |
The pressure deformation characteristics is a function of a parameter that is termed as ______ |
| A. | Radius of stiffness |
| B. | Radius of relative stiffness |
| C. | Relative stiffness radius |
| D. | Relative radius of stiffness |
| Answer» C. Relative stiffness radius | |
| 14. |
Which of the below is not a critical load position? |
| A. | Interior |
| B. | Corner |
| C. | Edge |
| D. | Center |
| Answer» E. | |
| 15. |
______ indicated that the failure of most concrete slabs occurred at the corner of the slab. |
| A. | H. M. Westergaard |
| B. | A. T. Goldbeck |
| C. | Chester McDowell |
| D. | Norman McWell |
| Answer» C. Chester McDowell | |