The following statements are related to temperature stresses developed in concrete pavement slabs with free edges (without any restraint):
- The temperature stresses will be zero during both day and night times if the pavement slab is considered weightless
- The temperature stresses will be compressive at the bottom of the slab during night time if the self-weight of the pavement slab is considered
- The temperature stresses will be compressive at the bottom of the slab during day time if the self-weight of the pavement slab is considered
The TRUE statement(s) is(are)
- P only
- Q only
- P and Q only
- P and R only