Pavement Design MCQ with answer and solution

Concept

A good pavement must be strong and non-yielding so it does not deform under wheel loads.

Step-by-step solution

1. List the needs of an ideal pavement: strong, smooth, impervious, durable and non-yielding. 2. Yielding, deflection and undulation are defects, not good qualities. 3. So the correct quality is non-yielding.

Explanation

A road pavement must carry heavy wheel loads without deforming. If it yields or deflects, cracks and ruts form. So a pavement should be non-yielding.

Why the other options are wrong

A: Yielding means the pavement deforms under load, which is a defect. B: Large deflection causes cracking and failure. D: Undulation makes the riding surface uneven and unsafe.

Shortcut

Three options are defects. Pick the only positive quality: non-yielding.

Common mistake

Thinking flexible pavement should be 'yielding'. Flexible means it bends a little, not that it yields.