AS 1684.3 C2 Supp 1-2006
AS 1684.3 C2 Supp 1-2006 Residential timber-framed construction - Cyclonic areas - C2 Supplement 1: Timber framing span tables - Wind classification C2 - Seasoned softwood - Stress Grade F5 (Supplement to ASÂ 1684.3-2006)
standard by Standards Australia, 01/01/2006