Sets out requirements for masonry units used for walls built in accordance with AS3700 and NZS4230.

This Standard specifies requirements for masonry units for walling built in accordance with AS 3700 and NZS 4230.The masonry units covered by this Standard include those made of the following materials:(a) Autoclaved aerated concrete.(b) Calcium silicate (sand-lime).(c) Concrete (dense or lightweight).(d) Dimension stone (cut or dressed).(e) Fired clay (with or without shale).Dimension stone has a wide variety of characteristics. These are not fully covered by the requirements of this Standard.Tiles, or similar, that are intended to be rigidly fixed or suspended are not within the scope of this Standard.This Standard does not specify requirements for masonry units other than requirements for the verification of their nominated characteristic values.NOTES:1 Guidance on means for demonstrating compliance with this Standard is given in Appendix B.2 Guidance on the determination of characteristic value is given in Appendix C.3 Guidance on the content of a purchasing agreement is given in Appendix D.4 Guidance on optional testing is given in Appendix E.5 Some non-rectilinear shapes for walling units are not illustrated in this Standard; however, this Standard may be used, but not all test methods mentioned may be applicable to such shapes.

First published in Australia as AS A21-1934.
Int 306 first published 1948.
Int 315 first published 1949.
AS A21-1934 revised and redesignated Int 323-1953.
Revised and redesignated AS A21-1964.
Int 315-1949 revised and redesignated AS A91-1967.
Int 306-1948 revised and redesignated in part as AS A87-1963 and AS 1346-1973.
AS A91-1967 revised and redesignated AS 1653-1974.
AS A87-1963 revised and redesignated AS 1500-1974.
AS A21-1964 revised and redesignated AS 1225-1980.
Second edition AS 1225-1984.
AS 1346-1973 and AS 1500-1974 revised, amalgamated and redesignated AS 2733-1984.
Second edition AS 1653-1985.
First published in New Zealand as NZSS 366-1943.
Second edition 1963.
NZS 595 first published 1966.
Revised and redesignated NZS 3102P-1974.
NZS 3116.1 first published 1981.
NZS 3102P-1974 revised and redesignated NZS 3102-1983.
Second edition NZS 3116.1:1991.
AS 1225-1985, AS 1653-1985, part of AS 2733-1984, NZSS 366-1963, NZS 3102-1983, and NZS 3116.1:1991 jointly revised, amalgamated and redesignated AS/NZS 4455:1997.
AS/NZS 4455:1997 revised and designated, in part, AS/NZS 4455.1:2008.
Reconfirmed 2020. Originated in Australia as AS A21-1934. Final Australian edition AS 1653-1985. Originated in New Zealand as NZSS 366-1943. Final New Zealand edition NZS 3116.1:1991. Jointly revised, amalgamated and redesignated AS/NZS 4455:1997. AS/NZS 4455:1997 revised and designated, in part, AS/NZS 4455.1:2008.