MCQOPTIONS
Saved Bookmarks
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 maximum diameter of tie bars may be limited to 20 mm to ______ |
| A. | Permit warping |
| B. | Resist warping |
| C. | Permit bending |
| D. | Resist bending |
| Answer» B. Resist warping | |
| 2. |
Design the spacing for a dowel bar system for the following data:Design wheel load = 8000 kgPercentage of load transfer = 40 %Slab thickness = 30 cmJoint width = 2 cmRadius of relative stiffness = 105.45 cmCharacteristic compressive strength = 400 kg/cm2 |
| A. | 25 cm |
| B. | 20 cm |
| C. | 35 cm |
| D. | 30 cm |
| Answer» E. | |
| 3. |
The joint width is taken as 2.5 cm when dowel bar is used. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
The thickness of a PCC pavement is 26 cm and the width of the lane is 3.5 m. Find the length of a tie bar system along the longitudinal joints if the allowable working stress in concrete is 1250 kg/cm2, unit weight of concrete is 2400 kg/m3, coefficient of friction is 1.4, allowable bond stress in deformed bars is 24.6 kg/cm2 and allowable tensile stress in deformed bars is 2000 kg/cm2. |
| A. | 75 cm |
| B. | 70 cm |
| C. | 85 cm |
| D. | 80 cm |
| Answer» C. 85 cm | |
| 5. |
What is the maximum spacing for a plain 12 mm diameter tie bar to be used in a 25 cm thick slab? |
| A. | 45 cm |
| B. | 50 cm |
| C. | 40 cm |
| D. | 55 cm |
| Answer» B. 50 cm | |
| 6. |
Dowel bars need not be provided for slabs having a thickness less than ______ |
| A. | 15 cm |
| B. | 20 cm |
| C. | 10 cm |
| D. | 25 cm |
| Answer» B. 20 cm | |
| 7. |
The thickness of a PCC pavement is 24 cm and the width of the lane is 3.5 m. Find the length of a tie bar system along the longitudinal joints if the allowable working stress in concrete is 1250 kg/cm2, unit weight of concrete is 2400 kg/m3, coefficient of friction is 1.5, allowable bond stress in deformed bars is 24.6 kg/cm2 and allowable tensile stress in deformed bars is 2000 kg/cm2. |
| A. | 50 cm |
| B. | 48 cm |
| C. | 55 cm |
| D. | 45 cm |
| Answer» B. 48 cm | |
| 8. |
The load capacity of the dowel system is assumed to be ______ of the design ______ load. |
| A. | 40 %, bar |
| B. | 40 %, wheel |
| C. | 60 %, bar |
| D. | 60 %, wheel |
| Answer» C. 60 %, bar | |
| 9. |
Design the size of a dowel bar at the expansion joint for the following data:Thickness of slab = 25 cmWidth of joint = 2.5 cmAllowable flexural stress in bars = 1400 kg/cm2Allowable shear stress in bars = 1000 kg/cm2Allowable bearing stress in concrete = 100 kg/cm2 |
| A. | 50 cm |
| B. | 51.7 cm |
| C. | 41.7 cm |
| D. | 40 cm |
| Answer» D. 40 cm | |
| 10. |
The thickness of a PCC pavement is 20 cm and the width of the lane is 3.5 m. Find the area of a tie bar system along the longitudinal joints if the unit weight of concrete is 2400 kg/3, coefficient of friction is 1.2 and allowable tensile stress in deformed bars is 2000 kg/cm2. |
| A. | 0.11 cm2 |
| B. | 1.01 cm2 |
| C. | 0.01 cm2 |
| D. | 1.10 cm2 |
| Answer» C. 0.01 cm2 | |
| 11. |
What is the equation used to compute the load transfer capacity of a dowel bar in shear? |
| A. | \(P^{‘}=\frac{2d^3 F_f}{L_d+8.8δ^{‘}}\) |
| B. | \(P^{‘}=\frac{F_b L_d^2 d}{12.5(L_d+1.5δ^{‘})}\) |
| C. | \(P^{‘}=0.785d^2 F_s\) |
| D. | \(P^{‘}=0.578d^2 F_s\) |
| Answer» D. \(P^{‘}=0.578d^2 F_s\) | |
| 12. |
As per IRC recommendations according to whose analysis must the dowel bars be designed? |
| A. | Westergaard |
| B. | Burmister |
| C. | Bradbury |
| D. | Teller |
| Answer» D. Teller | |
| 13. |
The dowel bar is embedded between the two slabs. |
| A. | True |
| B. | False |
| Answer» C. | |
| 14. |
Tie bars are ______ that are used to ______ |
| A. | Round bars, transfer loads |
| B. | Round bars, maintain aggregate interlock |
| C. | Deformed rebars, transfer loads |
| D. | Deformed rebars, maintain aggregate interlock |
| Answer» E. | |
| 15. |
What type of reinforcement is generally provided in the expansion joints? |
| A. | Tie bar |
| B. | Dowel bar |
| C. | Tri bar |
| D. | Dowal bar |
| Answer» C. Tri bar | |