Flat Roof Joist Span

These span tables are the equivalent of other industry standard span tables and are calculated to the same standards.

Flat roof joist span.

Live load is weight of furniture wind snow and more. 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. Maximum rafter spans for a patio roof in areas with mild climates patio roofs are generally designed for loads of 30 psf pounds per square foot.

Dead load weight of structure and fixed loads 15 lbs ft 2. 2 are indicated below. This is the distance between joist centres. For heavy roofs or in areas with substantial snowfall or winds call your local building department for code requirements.

Use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size. The section sizes are based on regularised als or cls timber. This table uses commonly available uk regularised timber depths. 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.

These spans were calculated using our flat roof joist calculation engine. Also available for the android os. Span tables for solid timber joists. 1 ft 0 3048 m.

For timber floors between homes. Span calculator for wood joists and rafters also available for the android os. 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 04 2 75 3 47 4 20 4 93 5 66 floor joists flat roof joists assumptions at 400mm centers supporting permanent load excluding self weight of joists up to 50kg m2. This span table is to the format and methodology given in bs 5268 7 2.

Douglas fir maximum horizontal roof rafter span for lumber grade selected structural and no. 1 psf lb f ft 2 47 88 n m 2.