Question

The critical stress condition in slab occurs when __________

(a) corners remain unwrapped

(b) corners are wrapped upward

(c) corners are wrapped downward

(d) corners are wrapped laterally

The question was asked at a job interview.

I need to ask this question from Design of Rigid Pavements in portion Design of Flexible & Rigid Pavement of Geotechnical Engineering II

Answer 1

Right option is (c) corners are wrapped downward

The explanation: The critical stress condition in slab is when temperature and load stresses are additive. This happens when the road is hot in day and cold in night. When the corners are wrapped downward, the critical stress condition in slab occurs.