Question

The critical stress condition in slab is when _________

(a) temperature and load stresses are multiplicative

(b) temperature and load stresses are additive

(c) temperature and load stresses oppose each other

(d) critical stress condition does not occur in slab

I had been asked this question by my college professor while I was bunking the class.

This question is from Design of Rigid Pavements in portion Design of Flexible & Rigid Pavement of Geotechnical Engineering II

Answer 1

The correct choice is (b) temperature and load stresses are additive

The explanation is: The critical stress condition in the slab is the one in which the stresses due to temperature and stresses due to load are additive. This takes place when the slab corners are wrapped down.