Roof Thickness For House

Post frames generally lack structural sheathing so the roof and wall panels must span between the supporting trusses or purlins.

Roof thickness for house.

The answer depends mostly on how far apart the rafters are and the roof loads which vary based on the pitch of your roof. The house base area is the area of land that the house covers and for more complex shapes can be estimated using the area calculator. Answered october 6 2017. Because 22 24 or 26 gauge sheeting is thicker and will therefore remain more structurally sound over a longer span than a 29 gauge the building needs fewer supports which saves your customers money.

In this case plywood should be a minimum of 3 8 inch thick. The thickness of plywood used for roof decking depends on the roof slope the spacing of. Trusses are not as thick as rafters are because they are engineered from multiple wood members with the ability. For example we build residential in flat plate concrete which will typically have a column spacing of 20 oc and a slab thickness of 8 typ.

Roof sheathing comes in grid marked 4 by 8 foot sheets and should be installed perpendicular to the frame. The problem with metal roofing gauge is that there is a wide range of tolerances. The following tools estimate the area of a roof as well as the amount of materials necessary to construct a roof of a given area. Many factors affect thickness.

Plywood is made with three or more layers of thin wood glued together with the grain. The min thickness of the roof slab should be 6 inches and maximum it can go up to 13 14 inches for span up to 7 m long. Studied at srm institute of science and technology. Commercial is typically steel w a composite deck so you ll have a 5 6 slab sitting on top of steel beams.

Sheathing should be a minimum of 19 32 inch thick. For example one company might sell a product as being 24 gauge but in reality the thickness of the metal could vary from 0 018 to 0 0335 based upon exactly how that company looks at things and how big of a tolerance they allow for. Rafters are the structural beams that support the weight of the roof sheathing and the shingles. With that in mind i ve seen slabs as thick as 16 18 due to column spacing.

The minimum plywood for roofing plywood is layers of wood.