Roofing Australian Timber Span Tables

Residential timber framed construction part 2.

Roofing australian timber span tables.

The imposed uniformly distributed live load in the main span. 1 refer to general notes for information that is relevant for all span tables. Member tables for seasoned timber stress grade f17. All other data is available on page 121 of the 2012 international residential code.

Scope and general principles. Children s nightwear and limited daywear having reduced fire hazard. Roof load width rlw and floor load width flw can be determined from as1684 or from the images below. If the manual.

Technical diagram span tables f7 rafters 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 1250 1150 1050 1000 950 90 x 30 1650 1550 1550 1400. Electrical installations known as the australian new zealand wiring rules bridge design part 1. Spanman increase member sizes in accordance with australian codes if the member supports brittle loads. Spacing should be interpreted as the centre to centre distance between adjacent parallel members.

3 where rafters are equal to or exceed four times their breath blocking should be used to reduce distortion. Span charts and 2012 irc building codes for girders and headers. Wind classification 1 n2. Use recommended minimum roof pitches as specified by roof sheet supplier.

Posts these span tables are designed for a minimum post size of 50 x 50 x 2 5mm up to a maximum height of 3 0m. 2 for design parameters refer to figure 7 26. Spantec has prepared these tables for use by people skilled in the design and specification of the type of. This is set by the roof use you selected in the previous screen and cannot be modified.

Required size for a given span. Includes span tables for all load bearing locations and the number of jack studs. Loads are calculated in accordance with table 3 1 of as nzs 1170 1 2002. Flat roof span tables allow for a maximum roof pitch of 5º.

A maximum roof pitch of 25 degrees is assumed. Span tables allow users to choose an appropriate size and stress grade to achieve spanning needs. Construction details should be in accordance with as1684 2. Stress grades and timber sizes combine to determine the spanning ability of load carrying members.

For simple construction such as domestic construction this can be determined from span table supplements in as1684 2 and as1684 3. Lintel span sheet roofing tiled roofing roof load width rlw mm 1500 2100 4500 7500 1500 2100 4500 7500 maximum span of lintel mm 90 x 35 600 2000 1800 1400 1200.