For pitched roofs flat roofs and ceiling joists.
Flat roof joist span trada span tables.
Span tables for solid timber members in floors ceilings and roofs for dwellings.
Surveyors span tables for designing roof rafters.
Timber to be covered these span tables do not apply to timber which is fully exposed to the elements.
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.
Eurocode 5 span tables.
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.
Roof pitch use recommended minimum roof pitches as specified by roof sheet supplier.
2nd edition trada.
These span tables apply only to flat roof and roof with a slope of up to 10 degrees.
Flat roof span tables allow for a maximum roof pitch of 5ยบ.
Posts these span tables are designed for a minimum post size of 50 x 50 x 2 5mm up to a maximum height of 3 0m.
Easy to look up tables allow the reader to choose the size of solid softwood timber members necessary to give adequate support to floors ceilings and roofs in dwellings.
Free trada span tables pdf supersedes.
Calculations are also given for canted purlins supporting roof sheeting or cladding and for flat roof joists.