Roof Slab Thickness For 2 Story House

In such applications using size 3 and 4 rebar is common.

Roof slab thickness for 2 story house.

A 4 millimeter sheet of plastic lies between the concrete and the gravel to keep moisture out. 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. It should come as no wonder then that these are experiencing a serious comeback right now. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers.

Lb la 24 75 8 3 09 2 one way slab assume 5 slab. The same floor if framed with 2 by 12s will be 13 1 4 inches thick. Slabs for septic tanks may require the use of both welded wire fabric and rebar. Around the edge of the slab the concrete forms a beam that is perhaps 2 feet deep.

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. Roof rafters trusses and beams. The rest of the slab is 4 or 6 inches thick.

Exact specifications vary but most concrete roofs are several inches thick. Span length for end span according to aci 8 7 is minimum of. 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. Influential architects working in the early 1900s such as walter gropius and le corbusier saw ornamentation and traditional styles of architecture as.

A solid slab of concrete capping the top of your house. 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. A 4 or 6 inch layer of gravel lies beneath the slab. 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.

Minimum rcc beam size should not be less than 9 x 9 225mm x 225mm with an additional slab thickness of 125 mm. Section a a see figure 1 above. For example a slab that is 6 inches thick might have rebar marked as size 6 or 3 4 inch. Therefore l 8 42 slab thickness hf l 20 0 4 fy 100000 for fy 60000 psi.

A concrete roof is exactly what it sounds like. I maintain a concrete cover of 40 mm.