Flat Roof Joist Spans Uk

Span is clear span between supports.

Flat roof joist spans uk.

Flat roof with no permanent access and altitude not exceeding 100m 0 75 kn m udl 0 9 kn point load. This span table is to the format and methodology given in bs 5268 7 2. Span tables for solid timber joists. Roof trusses mitek manufactures the steel connector plates used in roof trusses.

Joist breadth 47mm. Floor joists flat roof joists assumptions at 400mm centers supporting permanent load excluding self weight of joists up to 50kg m2. Supporting imposed load for access and repair only. Surveyors and structural engineers utilise data from tables below to help calculate the correct size strength and centres of roof timbers for the required spans and loadings.

Surveyors span tables for designing roof rafters. Should refer to trada document span tables for solid timber members in floors ceilings and roofs excluding trussed rafter roofs for dwellings or ask your lbc surveyor for advice. At least 40mm bearing on supports. Click on a span to generate a full calculation you can adjust the exact span.

Posi rafters posi rafters combine the lightness of timber and strength of posi strut steel webs to provide a quality roof system that can span further than alternative timber products. Maximum slop3 10 deg. Check out the benefits of roof trusses and find a licensed mitek fabricator. For pitched roofs flat roofs and ceiling joists.

For timber floors between homes. Permissible clear spans for flat roof joists to bs 5268 7 2 find the column for your dead load and spacing and the row for your timber size to find the permissible clear span in metres. Eurocode 5 span tables for solid timber members in floors ceilings and roofs for dwellings 3rd edition. Tables 1 and 2 in this chapter are derived from the trada technology ltd.

Most areas exceeding 100m but not exceeding 200m excluding parts of scotland pennines north east england refer to bs 6399 3 1 kn m udl 0 9 kn point load.