Flat Roof Timber Joist Span

If you want 6 joists you need a steel midway.

Flat roof timber joist span.

Although i think you can get 6 metre joists in 6 x 2. This is the distance between joist centres. Herringbone type timber 38mm x 38mm. 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.

They also tell you what the maximum spacing should be between each section or timber member size of joists mm 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 05 2 67 3 22 3 77 4 31 4 85 assumptions at 400mm centers. Span tables for solid timber joists. Joists for that span would normally be around 9. For timber floors between homes.

Also available for the android os. Two rows or more when the span exceeds 4 5m. 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. Timber to be covered these span tables do not apply to timber which is fully exposed to the elements.

The section sizes are based on regularised als or cls timber. Eurocode 5 span tables for solid timber members in floors ceilings and roofs for dwellings 3rd edition. Rafter and joist span faq. These span tables apply only to flat roof and roof with a slope of up to 10 degrees.

Span calculator for wood joists and rafters also available for the android os. For example you can span a 1 grade no knots southern yellow pine a greater distance than a 2 grade with knots southern yellow pine. One row when the span of the joists exceeds 2 5m. You def cant put a joint in the timber.

Strutting should be either. Tables 1 and 2 in this chapter are derived from the trada technology ltd.