Pavement Design Practice Test 7

1. What is the method used for the design of rigid pavements?

PCA method

Bradbury’s analysis

Westergaard’s analysis

IRC method

2. Find the spacing for contraction joint to be included in an RCC slab in the rigid pavement having the following details.
Permissible tensile stress in the reinforcement, S_S = 1200 kg/cm²
Slab width, b = 4 m
Thickness of slab, h = 25 cm
Area of reinforcement, A = 9.35 m²
Coefficient of friction, f = 0.15
Unit weight of concrete, W = 2400 kg/m³

7.27 m

7.72 m

2.27 m

2.72 m

3. Warping joints are regularly used in all types of pavements to deal with warping.

True

False

4. What is the bitumen content required when using preformed fillers?

25%

55%

45%

35%

5. The fatigue life is taken as unlimited if the value of stress ratio is ______

> 0.55

< 0.45

> 0.45

< 0.55

6. The states belonging to which zone have the maximum temperature differential?

Zone II

Zone IV

Zone I

Zone III

7. Which type of joint is used in a prestressed cement concrete pavement?

Contraction

All

None

Construction

8. What stresses are to be computed if critical combination during day time is to be found out?

Load stresses

Warping stresses

Corner stresses

Edge stresses

9. The load capacity of the dowel system is assumed to be ______ of the design ______ load.

60 %, bar

40 %, wheel

40 %, bar

60 %, wheel

10. The combination of stresses would lead to failure when the slab is ______

Thicker

Wider

Short

Narrower