Roof Slab Thickness For 2 Story House

Therefore l 8 42 slab thickness hf l 20 0 4 fy 100000 for fy 60000 psi.

Roof slab thickness for 2 story house. I l ln hf 8 5 12 8 42 ii c c distance between supports 9 0625 figure 2. Roof rafters trusses and beams. Span length for end span according to aci 8 7 is minimum of. Contractors sometimes use the 1 8 rule meaning the size of the rebar is 1 8 the thickness of the slab.

A solid slab of concrete capping the top of your house. I maintain a concrete cover of 40 mm. 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. Roof and wall sheathing gravity and wind loads floor diaphragms and shear walls in plane lateral overturninand g loads 6 notes.

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. 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. For example a slab that is 6 inches thick might have rebar marked as size 6 or 3 4 inch. Around the edge of the slab the concrete forms a beam that is perhaps 2 feet deep.

Influential architects working in the early 1900s such as walter gropius and le corbusier saw ornamentation and traditional styles of architecture as. When accounting for joist width subflooring flooring and standard ceiling drywall a floor framed with 2 by 10s will be very close to 11 1 4 inches thick. Lb la 24 75 8 3 09 2 one way slab assume 5 slab. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers.

In such applications using size 3 and 4 rebar is common. A concrete roof is exactly what it sounds like. Section a a see figure 1 above. Minimum rcc beam size should not be less than 9 x 9 225mm x 225mm with an additional slab thickness of 125 mm.

The same floor if framed with 2 by 12s will be 13 1 4 inches thick. 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. A 4 millimeter sheet of plastic lies between the concrete and the gravel to keep moisture out. Exact specifications vary but most concrete roofs are several 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. Slabs for septic tanks may require the use of both welded wire fabric and rebar.