Timber Roof Batten Span Tables

Stress grades and timber sizes combine to determine the spanning ability of load carrying members.

Timber roof batten span tables.

Construction details should be in accordance with as1684 2. Span tables f7 rafters a maximum roof pitch of 25 degrees is assumed. We supply 38 x 38mm or 28 x 38mm non structural timber battens for tile roofs. Spacing should be interpreted as the centre to centre distance between adjacent parallel members.

Span tables allow users to choose an appropriate size and stress grade to achieve spanning needs. Roof load width rlw and floor load width flw can be determined from as1684 or from the images below. Table 2l pergola or carport beams wind classifications n1 n2 n3 and c1 member size roof load width. Joists crippled over supports shall be considered as single span joists.

The high performance values of steel roof battens means they are an increasingly popular choice for reroofing or for new builds using tile roofs. Technical diagram on page 35 30mm m aximum allow able sp ans mm sheet roof spacing mm rafter size 600 760 900 1000 1200 66 x 30 850 750 700 700 600 90 x 30 1200 1050. Table assumes a maximum flooring mass of 40kg. Lintel span sheet roofing tiled roofing roof load width rlw mm 1500 2100 4500 7500 1500 2100 4500 7500 maximum span of lintel mm 90 x 35 600 2000 1800 1400 1200.

Timber battens for tile roofs must meet the requirements of as 1684 2 as 1684 3 or as 1720 1. For simple construction such as domestic construction this can be determined from span table supplements in as1684 2 and as1684 3.