Q. In pavement design, what does the term 'subgrade' refer to?
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A.
The top layer of the pavement
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B.
The layer of soil beneath the pavement
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C.
The drainage layer
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D.
The layer of asphalt
Solution
The subgrade refers to the layer of soil beneath the pavement that supports the pavement structure.
Correct Answer:
B
— The layer of soil beneath the pavement
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Q. What is the primary function of a pavement drainage system?
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A.
To improve ride quality
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B.
To prevent water accumulation
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C.
To enhance surface friction
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D.
To reduce noise pollution
Solution
The primary function of a pavement drainage system is to prevent water accumulation, which can damage the pavement.
Correct Answer:
B
— To prevent water accumulation
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Q. What is the purpose of a pavement design thickness?
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A.
To improve aesthetics
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B.
To reduce construction costs
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C.
To ensure structural integrity
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D.
To enhance drainage
Solution
The thickness of pavement design is crucial to ensure structural integrity and support the expected traffic loads.
Correct Answer:
C
— To ensure structural integrity
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Q. Which factor is most critical in determining the design life of a pavement?
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A.
Traffic volume
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B.
Material type
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C.
Climate conditions
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D.
Construction methods
Solution
Traffic volume is the most critical factor in determining the design life of a pavement, as it directly affects wear and tear.
Correct Answer:
A
— Traffic volume
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Q. Which of the following is NOT a type of flexible pavement?
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A.
Asphalt concrete
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B.
Bituminous surface treatment
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C.
Portland cement concrete
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D.
Soil-cement
Solution
Portland cement concrete is a type of rigid pavement, not flexible pavement.
Correct Answer:
C
— Portland cement concrete
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Q. Which pavement material is known for its high resistance to deformation under load?
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A.
Asphalt
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B.
Concrete
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C.
Gravel
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D.
Soil
Solution
Concrete is known for its high resistance to deformation under load, making it suitable for heavy traffic areas.
Correct Answer:
B
— Concrete
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