1 refer to general notes for information that is relevant for all span tables.
Timber floor joist span tables australia.
Member span is not suitable for rafter spacing greater than 600mm.
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3 for design parameters refer to figure 6 22 as1684 2 and 3.
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View joist rafter tables.
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Span tables allow users to choose an appropriate size and stress grade to achieve spanning needs.
Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.
Joists continuous span beam.
Our joists give you more options for designing economical floor joist layouts.
Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.
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Stress grades and timber sizes combine to determine the spanning ability of load carrying members.
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Use the single span tables for the purpose of obtaining the appropriate size.
For simple construction such as domestic construction this can be determined from span table supplements in as1684 2 and as1684 3.
Tables such as those for rafters floor joists and ceiling joists require.
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.
View allowable load tables.
2 denotes 600 mm rafter spacing only.
You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.
