Timber Framing Hardwood Span Tables

Apa provides span tables for apa structural use panels.

Timber framing hardwood span tables.

American wood council offers a range of span tables. Wind classification n1 n2. The spans given in these tables have been developed by experienced timber. 2 for design parameters refer to figure 7 26.

As 1684 1 1999 amdt 1. For simple construction such as domestic construction this can be determined from span table supplements in as1684 2 and as1684 3. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. Western wood products association provides the western lumber span tables book in digital format.

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. Residential timber framed construction design criteria. Span tables f7 rafters a maximum roof pitch of 25 degrees is assumed. 3 where rafters are equal to or exceed four times their breath blocking should be used to reduce distortion.

Design criteria and loading. Table assumes a maximum flooring mass of 40kg m2. Span tables allow users to choose an appropriate size and stress grade to achieve spanning needs. Member tables for seasoned timber stress grade f17 seasoned hardwood f17 129.

Residential timber framed construction design criteria. Other more complex load condition spans can be determined with our free hyne timber design 7 5 software. Joists crippled over supports shall be considered as single span joists. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.

Timber structures fire resistance for structural adequacy of timber members. 1 refer to general notes for information that is relevant for all span tables. Thora timbers dressed hardwood span tables we hereby certify that the span tables prepared for thora wholesale timbers p l for dressed hardwood stress grades f14 and f17 have been prepared generally in accordance with the design criteria contained in as 1684 1 1999 residential timber framed. Yspan offers an alternative to f17 hardwood beams in h.

Pergola rafter spans for 600 mm and 900 mm spacing. Construction details should be in accordance with as1684 2. Design engineers in accordance with as1684 1 1999 and include the most up to date loading combinations from.