Thickness of concrete slab depends on loads and size of the slab.
Concrete roof thickness for house.
2 thick brick tile.
Structural concrete work is planned to bear loads or hold weight but transfer the weight to the soil base beneath the structure.
Thickness of slab depend upon types of slab like flat slab edge supported slab flat plate waffle rib slab.
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.
Im building a cinder block house in the cook islands an am planning to put a concrete roof on.
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.
Methods used for finding slab thickness varies for different types of slabs.
The house is 14m by 14m answer save.
Steel yield strength fy 40 ksi.
For example one way slab thickness calculation is different and easier from.
For one way slab has basic same law.
Even though a treated concrete slab is waterproof standing water on a roof terrace should be avoided and so all roof terrace slabs should be built with a small slope to ensure that all water is drained.
A concrete roof is exactly what it sounds like.
Rafters that are slightly farther apart might require inch or 5 8 inch thick plywood.
A roof that lays practically flat will have a much heavier load than a steeper roof that allows rain snow and ice to roll right off.
Exact specifications vary but most concrete roofs are several inches thick.
Concrete compressive strength fc 3 ksi.
Slabs s1 and s2 to be designed.
What is the minimum thickness of a flat concrete roof for a house.
Because typical concrete is porous it needs to be treated with an additive such as xypex which makes the concrete waterproof.
Minimum thickness of slab for edge support structure is 3 5 accordance to bangladesh national building code bnbc if the slab is be two way.
For beam it should be 16mm and 12 mm as per span.
Ms steel for slab for main bar should be 10mm and for distribution 8mm or 10 mm.
However you may need to consider bolstering the plywood thickness for a roof that has a higher load.
Design the roof slab beam and column of house given in figure 1.
In general 6 inch 150mm slab thickness is considered for residential and commercial buildings with reinforcement details as per design.
Live load 40 psf figure 1.
For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers.