Multiple choice

In the context of flexible pavement design, the ratio of contact pressure to tyre pressure is called the Rigidity Factor. This factor is less than unity when the tyre pressure is

  1. less than 0.56 N/mm2

  2. equal to 0.56 N/mm2

  3. equal to 0.7 N/mm2

  4. more than 0.7 M/mm2
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The rigidity factor is the ratio of contact pressure to tyre pressure. It is less than unity when the tyre pressure is high (typically > 0.7 N/mm^2) because the contact area is smaller than the theoretical area.

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