Flat Roof Trada Span Tables

The section sizes are based on regularised als or cls timber.

Flat roof trada span tables.

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. For pitched roofs flat roofs and ceiling joists. Calculations are also given for canted purlins supporting roof sheeting or cladding and for flat roof joists. Eurocode 5 span tables.

Span tables for solid timber joists. Tables 1 and 2 in this chapter are derived from the trada technology ltd. For timber floors between homes. Free trada span tables pdf supersedes.

2nd edition trada. Span tables for solid timber members in floors ceilings and roofs for dwellings. Now with lay flat wire binding bm trada s eurocode 5 span tables is a well established key resource in timber specification and building. Now in its 4th edition the trada span tables publication is a must for any designer or builder.

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. Timber to be covered these span tables do not apply to timber which is fully exposed to the elements. These span tables apply only to flat roof and roof with a slope of up to 10 degrees. Roof rafter span use this table to determine the maximum lengths of roof rafters based on species and grade of lumber spacing dimensions load and slope.

Span tables span tables can be used to determine the size of a timber member of a particular. This document has been split into. Take a look here. Surveyors span tables for designing roof rafters.

Maximum clear span of flat roof joists in metres for sc3 timber spacing between joists size of roof joist 400mm 450mm 600mm 47 x 97 1 84 1 81 1 74. Eurocode 5 span tables for solid timber members in floors ceilings and roofs for dwellings 3rd edition. 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. Clear span c16 joist m clear span c24 joist m 47 x 95 47 x 120 47 x 145 47 x 170 47 x 195 47 x 220 1 77 2 40 2 89 3 38 3 87 4 36 2 04 2 75 3 47 4 20 4 93 5 66 floor joists flat roof joists assumptions at 400mm centers supporting permanent load.

Floor joist span use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size.