1 refer to general notes for information that is relevant for all span tables.
Roofing australian timber span tables.
If the manual.
Flat roof span tables allow for a maximum roof pitch of 5ยบ.
All other data is available on page 121 of the 2012 international residential code.
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.
Residential timber framed construction part 2.
Table assumes a maximum flooring mass of 40kg.
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.
A maximum roof pitch of 25 degrees is assumed.
Electrical installations known as the australian new zealand wiring rules bridge design part 1.
Span charts and 2012 irc building codes for girders and headers.
2 for design parameters refer to figure 7 26.
These charts are for 30 pound per square foot snow load on the roof.
Roof load width rlw and floor load width flw can be determined from as1684 or from the images below.
Wind classification 1 n2.
Scope and general principles.
For simple construction such as domestic construction this can be determined from span table supplements in as1684 2 and as1684 3.
3 where rafters are equal to or exceed four times their breath blocking should be used to reduce distortion.
Stress grades and timber sizes combine to determine the spanning ability of load carrying members.
Spacing should be interpreted as the centre to centre distance between adjacent parallel members.
Use recommended minimum roof pitches as specified by roof sheet supplier.
Spanman increase member sizes in accordance with australian codes if the member supports brittle loads.
Children s nightwear and limited daywear having reduced fire hazard.
Includes span tables for all load bearing locations and the number of jack studs.
Construction details should be in accordance with as1684 2.
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.
The imposed uniformly distributed live load in the main span.
Loads are calculated in accordance with table 3 1 of as nzs 1170 1 2002.
Joists crippled over supports shall be considered as single span joists.
Span tables allow users to choose an appropriate size and stress grade to achieve spanning needs.
