Question

The uniform sub grade support is most important in ___________

(a) flexible pavement

(b) semi-flexible pavement

(c) rigid pavement

(d) tar pavement

I got this question in an interview for internship.

I would like to ask this question from Design of Flexible Pavements in section Design of Flexible & Rigid Pavement of Geotechnical Engineering II

Answer 1

Right choice is (c) rigid pavement

For explanation I would say: The rigid pavements can be constructed over a relatively poor sub-grade like black cotton or plastic soils or peat, etc. The load is taken by the bending action of the slab and thus the uniform sub-grade support is the most essential condition for the satisfactory performance.