First published in part as part of AS CS 3-1931.Revised and redesignated AS 2179-1978 and AS 2180-1978.AS 2180-1978 and part of AS 2179-1978 revised and designated AS 2180-1986.AS 3500.3 first published 1990.AS 2180-1986 and AS 3500.3-1990 revised, amalgamated and redesignated in part as AS 3500.3.1-1998. Originated in part as part of AS CS3-1931. Previous editions AS 2180-1986 and AS 3500.3-1990. AS 2180-1986 and AS 3500.3-1990 revised, amalgamated and redesignated in part as AS 3500.3.1-1998.