AS 1684.2 N4 Supp 9-2006
AS 1684.2 N4 Supp 9-2006 Residential timber-framed construction - Non-cyclonic areas - N4 Supplement 9: Timber framing span tables - Wind classification N4 - Seasoned hardwood - Stress Grade F27 (Supplement to ASÂ 1684.2-2006)
standard by Standards Australia, 01/01/2006