Thickness Of Concrete Roof Slab

In general 6 inch 150mm slab thickness is considered for residential and commercial buildings with reinforcement details as per design.

Thickness of concrete roof slab.

For example we build residential in flat plate concrete which will typically have a column spacing of 20 oc and a slab thickness of 8 typ. If reinforced concrete were to be reused strong connections would have to be made between roof and walls. Reinforced concrete slabs are heavier and generate higher seismic forces in an event. Such slabs left unconnected to walls caused many deaths in the 2005 quake from school roof collapses.

Commercial is typically steel w a composite deck so you ll have a 5 6 slab sitting on top of steel beams. A concrete roof is exactly what it sounds like. Methods used for finding slab thickness varies for different types of slabs. Slab on ground 1 4 minimum thickness of diaphragms.

The thickness of a slab will depend on the use and span of the slab. A concrete slab is a common structural element of modern buildings consisting of a flat horizontal surface made of cast concrete. Exact specifications vary but most concrete roofs are several inches thick. Steel reinforced slabs typically between 100 and 500 mm thick are most often used to construct floors and ceilings while thinner mud slabs may be used for exterior paving.

With that in mind i ve seen slabs as thick as 16 18 due to column spacing. The normal thickness used for reinforced concrete slabs in south africa is 170 mm for small slabs 255 mm for slabs larger than 5m x 5m and 340 mm thick for long span slabs forming part of a beam and carrying heavier loads. The thickness of slabs with sloping soffits see figure 722 2 2 1 2 shall be determined at a. In many domestic and industrial buildings a thick concrete slab supported on foundations or directly on the subsoil is used to construct the ground floor.

These slabs are generally classified. Thickness of concrete slab depends on loads and size of the slab.