Roofing Australian Standards Timber Span Tables

3 for design parameters refer to figure 6 22 as1684 2 and 3.

Roofing australian standards timber span tables.

Table assumes a maximum flooring mass of 40kg. 2 denotes 600 mm rafter spacing only. Reading off the empty under table with h 5m hc 2 5m span table c will be used to determine the spans. Construction details should be in accordance with as1684 2.

Member tables for seasoned timber stress grade f17. 1 refer to general notes for information that is relevant for all span tables. Member span is not suitable for rafter spacing greater than 600mm. Roof load width rlw and floor load width flw can be determined from as1684 or from the images below.

Spacing should be interpreted as the centre to centre distance between adjacent parallel members. Required size for a given span. Standards australia is committed to maintaining a contemporary and relevant catalogue of australian standards which add to the net benefit of the australian community. Technical diagram span tables f7 rafters on page 35 30mm m aximum allow able sp ans mm sheet roof spacing mm rafter size 600 760 900 1000 1200 66 x 30 1250 1150 1050 1000 950 90 x 30 1650 1550 1550 1400.

The aged standards review is one of the ways in which standards australia gives effect to that commitment. Step 4 assume the wind classification for the area is n1 and the roofing profile is stramit corrugated cladding 0 48mm bmt thickness in a single span configuration. Joists crippled over supports shall be considered as single span joists.