Roof Slab Thickness For 2 Story House

Roof and wall sheathing gravity and wind loads floor diaphragms and shear walls in plane lateral overturninand g loads 6 notes.

Roof slab thickness for 2 story house.

In such applications using size 3 and 4 rebar is common. 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. For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers. 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.

Span length for end span according to aci 8 7 is minimum of. A 4 millimeter sheet of plastic lies between the concrete and the gravel to keep moisture out. Section a a see figure 1 above. A concrete roof is exactly what it sounds like.

A 4 or 6 inch layer of gravel lies beneath the slab. It should come as no wonder then that these are experiencing a serious comeback right now. 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. Roof rafters trusses and beams.

I maintain a concrete cover of 40 mm. For example a slab that is 6 inches thick might have rebar marked as size 6 or 3 4 inch. 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 l ln hf 8 5 12 8 42 ii c c distance between supports 9 0625 figure 2.

Slabs for septic tanks may require the use of both welded wire fabric and rebar. Influential architects working in the early 1900s such as walter gropius and le corbusier saw ornamentation and traditional styles of architecture as. The same floor if framed with 2 by 12s will be 13 1 4 inches thick. 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. The rest of the slab is 4 or 6 inches thick. Contractors sometimes use the 1 8 rule meaning the size of the rebar is 1 8 the thickness of the slab. 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. Exact specifications vary but most concrete roofs are several inches thick.