The spans given in these tables have been developed by experienced timber design engineers in accordance with as1684 1 1999 and include the most.

Timber roof battens span. 1 13 23 for detailed diagram. This is set by the roof. Required size for a given span. Ns not suitable batten spans wind classification n1 n2 batten spacing 600 mm batten spacing 900 mm batten spacing size 1200 mm.

Fasten the batten to every truss or rafter with a 12x40mm timber fixing screw minimum fixing size through each flange as shown below. Span tables f7 rafters 30mm 11 f7 rafters 42mm 14 verandah beams f7 42mm sheet roof 17 verandah beams f7 42mm tile roof 20 verandah beams gl8 sheet roof 21 verandah beams gl8 tile roof 24 ridge beams f7 42mm sheet roof 25 ridge beams f7 42mm tile roof 28 internal floor joists f7 42mm 30. For details of weights refer to about technical. Roof load width rlw and floor load width flw can be determined from as1684 or from the images below.

The high performance values of steel roof battens means they are an increasingly popular choice for reroofing or for new builds using tile roofs. Double diagonal bracing between posts in both directions a typical attached pergola battens footing. Note that spanman automatically calculates the weight of roof battens and adds it to the roof weight. Timber battens for tile roofs must meet the requirements of as 1684 2 as 1684 3 or as 1720 1.

Issued by timber queensland 19 battens footing knee brace beam post hot dipped galvanised stirrup ends of rafters and beams shaped to reduce end grain exposure ledger rafter lightweight roo ng max. Sheet roofing tiled roofing roof load width rlw mm 1500 2100 4500 7500 1500 2100 4500 7500. Roof beams 20 verandah beams 22 garage roof pitching beams 23 common installation details 25. Table 33 bearers supporting two storey loadbearing walls lower floor load width 900mm or 1800mm.

Seasoned hardwood f17171. The imposed uniformly distributed live load in the main span. Refer to as1684 2 and 3 clause 2 6 4 for other configurations. Pick list all suitable timber and steel sections to design across all timber and steel sections.

Maximum span of bearer mm upper floor load width 1800mm single span. Batten to steel fixing. Roofing battens batten to timber fixing. We supply 38 x 38mm or 28 x 38mm non structural timber battens for tile roofs.

For the pergola beams shown in illustration the roof load width is the dimension representing half the rafter span plus any rafter overhang.

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