Flat Roof Joist Span Tables Uk

Maximum slop3 10 deg.

Flat roof joist span tables uk. Notches are not to exceed 0 125 of the depth of the joist and are to be located between 0 07 and 0 25 of the span from the support. At least 40mm bearing on supports. Span is clear span between supports. 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.

The dead loads shown at the top of span table above do not include the self weight of the joists however the joist self weights are included in addition to the dead loads in the calculations used to determine permissble clear spans. Joist breadth 47mm. For pitched roofs flat roofs and ceiling joists. Tables 1 and 2 in this chapter are derived from the trada technology ltd.

Eurocode 5 span tables for solid timber members in floors ceilings and roofs for dwellings 3rd edition. For timber floors between homes. Span tables for solid timber joists. Ws200 easi joist joist depth.

Floor joists flat roof joists assumptions at 400mm centers supporting permanent load excluding self weight of joists up to 50kg m2. The section sizes are based on regularised als or cls timber. Surveyors span tables for designing roof rafters. Maximum achievable roof span ec5 uk ireland.

Span tables for flat roof joists to bs 5268 7 2 imposed loads of 0 75 kn m for maintenance and snow load are applicable where there is no permanent access no fixed ladder or staircase and most areas where the altitude does not exceed 100 metres refer to bs 6399 3. 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. Supporting imposed load for access and repair only.