Originated in Australia in part as AS C215—1971.Previous edition part of AS 1755—2000.Jointly revised in part and redesignated as AS/NZS 4024.3611:2015. Originated in Australia in part as AS C215-1971. Previous edition part of AS 1755-2000. Jointly revised in part and redesignated as AS/NZS 4024.3611:2015.