Thickness Of Concrete Roof Slab

Concrete thickness for flatwork such as slabs on grade and driveways a minimum thickness of four inches is required but increasing the thickness to five inches can add nearly 50 percent to the load bearing capacity.

Thickness of concrete roof slab.

Slab on ground 1 4 minimum thickness of diaphragms. Exact specifications vary but most concrete roofs are several inches thick. In general 6 inch 150mm slab thickness is considered for residential and commercial buildings with reinforcement details as per design. Thickness of concrete slab depends on loads and size 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. Methods used for finding slab thickness varies for different types of slabs. Such slabs left unconnected to walls caused many deaths in the 2005 quake from school roof collapses. 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 see below.

If reinforced concrete were to be reused strong connections would have to be made between roof and walls. The most commonly lightweight precast wall panel used are 75mm thick and 100mm thick. A solid slab of concrete capping the top of your house. Below is a comparison table between the two most common thickness used in the construction industry.

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.