First published as part of AS A89-1966.AS A89.20 first published 1973.AS A89.20-1973 and part of AS A89-1966 revised, amalgamated and redesignated AS 1289.E5.1-1977.Revised and redesignated AS 1289.5.5.1-1998.Reconfirmed 2016. Originated as part of AS A89-1966. Previous edition AS 1289.E5.1-1977. Revised and redesignated as AS 1289.5.5.1-1998.