Concrete slabs exposed to direct sunlight experiences temperature related horizontal
movements. In addition, temperatures on the top surface will be higher than those on the
underside of the slab, causing an upward movement of the slab during heating. In a typical
building, masonry and concrete structural elements restrain each other at their respective
interfaces. Therefore, significant movements may be generated on the masonry walls, due
to movement on roof slab. These movements can result in overstressing and cracking in
masonry.
