Timber Framing Hardwood Span Tables

Pergola rafter spans for 600 mm and 900 mm spacing.

Timber framing hardwood span tables.

American wood council offers a range of span tables. Yspan offers an alternative to f17 hardwood beams in h. Table assumes a maximum flooring mass of 40kg m2. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.

Residential timber framed construction design criteria. For simple construction such as domestic construction this can be determined from span table supplements in as1684 2 and as1684 3. Span tables f7 rafters a maximum roof pitch of 25 degrees is assumed. Seasoned hardwood f17 table 1a bearers supporting single storey loadbearing walls maximum floor load width 1800mm.

Construction details should be in accordance with as1684 2. 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. Span tables allow users to choose an appropriate size and stress grade to achieve spanning needs. With traditionally recognised framing practice as described in.

Joists crippled over supports shall be considered as single span joists. Timber structures fire resistance for structural adequacy of timber members. Design criteria and loading. Residential timber framed construction design criteria.

Member tables for seasoned timber stress grade f17 seasoned hardwood f17 129. Apa provides span tables for apa structural use panels. As 1684 1 1999 amdt 1. 2 for design parameters refer to figure 7 26.

Wind classification n1 n2. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. 3 where rafters are equal to or exceed four times their breath blocking should be used to reduce distortion. Other more complex load condition spans can be determined with our free hyne timber design 7 5 software.

The spans given in these tables have been developed by experienced timber. Design engineers in accordance with as1684 1 1999 and include the most up to date loading combinations from. 1 refer to general notes for information that is relevant for all span tables.