Reinforced Concrete Roof Slab Thickness

A solid slab of concrete capping the top of your house.

Reinforced concrete roof slab thickness.

Design process includes proper assumption of structural element sizes and then check hellip. The maximum diameter of bar used in slab should not exceed 1 8 of the total thickness of slab. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. Plan view of a reinforced concrete pitched inclined slab.

Slab reinforcement cantilever reinforcement slab thickness roof apex reinforcement example of a 1. Minimum thickness of concrete slab beam column foundation and other structural members is selected to meet the design requirements as per standard codes. A concrete slab is a common structural element of modern buildings consisting of a flat horizontal surface made of cast concrete. Reinforced concrete slabs are heavier and generate higher seismic forces in an event.

Thickness of the slab is decided based on span to depth ratio specified in is456 2000. A concrete roof is exactly what it sounds like. If reinforced concrete were to be reused strong connections would have to be made between roof and walls. 6 mm 8 mm 10 mm 12mm and 16mm.

Such slabs left unconnected to walls caused many deaths in the 2005 quake from school roof collapses. The diameter of bar generally used in slabs are. Minimum reinforcement is 0 12 for hysd bars and 0 15 for mild steel bars. The thickness of concrete is an important factor in load bearing strength but to conserve resources and avoid over building other factors are also taken into consideration.

Exact specifications vary but most concrete roofs are several inches thick. For determining moments shears and reactions of such slabs. According to the 1995 aci code all two way reinforced concrete slab systems including edge supported slabs flat slabs and flat plates are to be analyzed and designed according to one unified method such as direct design method and equivalent frame method.