AS 1684.2 N1/N2 Supp 4-2010/Amdt 1-2012
Residential timber-framed construction-Non-cyclonic areas - N1/N2 Supplement 4: Timber framing span tables - Wind classification N1/N2 - Seasoned softwood - Stress Grade MGP 10 (Supplement to AS 1684.2-2010)
Amendment by Standards Australia, 01/01/2010