Single span beams are beams supported at two points only.

Timber framing hardwood span tables. Seasoned hardwood f17129. A cd rom which contains the above supplements is attached to this standard. Member tables for seasoned timber stress grade f17. This standard does not preclude the use of framing fastening or bracing methods or materials other than those specified.

When appropriate separate tables are provided for different wind classifications. Span tables in supplements for unseasoned hardwood f8 and f11 may be used for unseasoned f8 and f11 softwood as well. Table 1a bearers supporting single storey loadbearing walls maximum floor load width 1800mm. For the purpose of using these tables span may be interpreted as the clear distance between supports measured along the beam.

Ledgers shall be a minimum 90 x 45 mm treated pine hardwood or cypress fixed to house framing studs joists or bearers with 12 mm dia. Seasoned hardwood f17. Continuous span beams are beams supported at three or more points along their length. For alternative species and larger spans refer as 1684.

Span tables allow users to choose an appropriate size and stress grade to achieve spanning needs. Other more complex load condition spans can be determined with our free hyne timber design 7 5 software. Hot dipped galvanised bolts or coach screws at 600 mm maximum spacing. Tables with a suffix l are for low wind speed areas n1 n2 n3 and c1.

Tables 1 2 5 and 10 list the recommended sizes and spans for the most commonly available timber species. For simple construction such as domestic construction this can be determined from span table supplements in as1684 2 and as1684 3. This document provides span tables for dressed unseasoned hardwood which may be used to supplement the design information provided in as 1684 residential timber framed construction part 2.

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