Roof Slab Thickness For 2 Story House

Section a a see figure 1 above.

Roof slab thickness for 2 story house.

Minimum rcc beam size should not be less than 9 x 9 225mm x 225mm with an additional slab thickness of 125 mm. 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. 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. A 4 millimeter sheet of plastic lies between the concrete and the gravel to keep moisture out.

I l ln hf 8 5 12 8 42 ii c c distance between supports 9 0625 figure 2. I maintain a concrete cover of 40 mm. 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. A concrete roof is exactly what it sounds like.

Slabs for septic tanks may require the use of both welded wire fabric and rebar. Therefore l 8 42 slab thickness hf l 20 0 4 fy 100000 for fy 60000 psi. Contractors sometimes use the 1 8 rule meaning the size of the rebar is 1 8 the thickness of the slab. Influential architects working in the early 1900s such as walter gropius and le corbusier saw ornamentation and traditional styles of architecture as.

Roof and wall sheathing gravity and wind loads floor diaphragms and shear walls in plane lateral overturninand g loads 6 notes. Roof rafters trusses and beams. Span length for end span according to aci 8 7 is minimum of. Exact specifications vary but most concrete roofs are several inches thick.

A 4 or 6 inch layer of gravel lies beneath the slab. Around the edge of the slab the concrete forms a beam that is perhaps 2 feet deep. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. A solid slab of concrete capping the top of your house.

The same floor if framed with 2 by 12s will be 13 1 4 inches thick. 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. The rest of the slab is 4 or 6 inches thick. Lb la 24 75 8 3 09 2 one way slab assume 5 slab.

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. For example a slab that is 6 inches thick might have rebar marked as size 6 or 3 4 inch.