Roof Slab Thickness For 2 Story House

Asd load combinations d h d h l2 0 3 l r s d h lr or s 0 3l 2 d l2 0 3 l r or s d lr or s 0 3 l 2 same as immediately above plus d w d 0 7e 0.

Roof slab thickness for 2 story house.

Although there are certainly many times and places throughout the history of architecture where flat roofs have been used the flat roof has been intrinsically tied with modern architecture since it emerged from the modernist style in the 1920s. Slabs for septic tanks may require the use of both welded wire fabric and rebar. In such applications using size 3 and 4 rebar is common. A 4 millimeter sheet of plastic lies between the concrete and the gravel to keep moisture out.

The rest of the slab is 4 or 6 inches thick. For example a slab that is 6 inches thick might have rebar marked as size 6 or 3 4 inch. A solid slab of concrete capping the top of your house. Roof rafters trusses and beams.

I l ln hf 8 5 12 8 42 ii c c distance between supports 9 0625 figure 2. Span length for end span according to aci 8 7 is minimum of. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. Ask any architect and they ll tell you that hardly any other type of architecture is as timeless and modern as that of flat roof houses.

Influential architects working in the early 1900s such as walter gropius and le corbusier saw ornamentation and traditional styles of architecture as. Around the edge of the slab the concrete forms a beam that is perhaps 2 feet deep. I generally use a minimum of 4 bars with 2 bars of 12 mm thickness in the bottom of the beam and 2 bars of 10 mm at the top of the beam. Exact specifications vary but most concrete roofs are several inches thick.

A 4 or 6 inch layer of gravel lies beneath the slab. The same floor if framed with 2 by 12s will be 13 1 4 inches thick. Regardless of how new or modern a house is there is a good chance that it will be topped off with a flat roof now but if you can t picture how great they look we. Minimum rcc beam size should not be less than 9 x 9 225mm x 225mm with an additional slab thickness of 125 mm.

A concrete roof is exactly what it sounds like. Therefore l 8 42 slab thickness hf l 20 0 4 fy 100000 for fy 60000 psi. Lb la 24 75 8 3 09 2 one way slab assume 5 slab. Roof and wall sheathing gravity and wind loads floor diaphragms and shear walls in plane lateral overturninand g loads 6 notes.

It should come as no wonder then that these are experiencing a serious comeback right now. Contractors sometimes use the 1 8 rule meaning the size of the rebar is 1 8 the thickness of the slab.