Thickness Of Concrete Roof Slab

A concrete slab is a common structural element of modern buildings consisting of a flat horizontal surface made of cast concrete.

Thickness of concrete roof slab.

Reinforced concrete slabs are heavier and generate higher seismic forces in an event. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. The thickness of slabs with sloping soffits see figure 722 2 2 1 2 shall be determined at a. 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.

Such slabs left unconnected to walls caused many deaths in the 2005 quake from school roof collapses. A concrete roof is exactly what it sounds like. With that in mind i ve seen slabs as thick as 16 18 due to column spacing. A solid slab of concrete capping the top of your house.

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. Thickness of concrete slab depends on loads and size of the slab. The thickness of a slab will depend on the use and span of the slab. 1 3 minimum thickness of slab on the ground ubc recommends minimum thickness of concrete floor slabs supported directly on the ground to be 89mm whereas bcgbc4010a apply structural principles to residential low rise constructions determined minimum thickness to be 100mm.

In general 6 inch 150mm slab thickness is considered for residential and commercial buildings with reinforcement details as per design. Methods used for finding slab thickness varies for different types of slabs. Commercial is typically steel w a composite deck so you ll have a 5 6 slab sitting on top of steel beams. Exact specifications vary but most concrete roofs are several inches thick.

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.