This Standard specifies minimum requirements for the materials and manufacture of buried metal pipe formed using sinusoidal profile strip. The pipe is full circular shape formed by a continuous helical lock-seam that runs helically to the longitudinal axis of the pipe.Pipe diameters up to and including 3600 mm are covered.Sinusoidal profiles covered include the following:(a) S38 (pitch 38 mm).(b) S68 (pitch 68 mm).(c) S75 (pitch 75 mm).(d) S125 (pitch 125 mm).Helically formed sinusoidal pipe structures are primarily intended for use as culverts in stormwater drainage, detention/retention systems, stockpile and access tunnels. The structures are intended to support roadway and railway and other loadings. They are buried in an embankment or in a trench situation and correct installation in a soil envelope is essential to the performance of the structure.This Standard does not consider the additional design requirements for internally pressurized applications.NOTES:1 For helically formed pipes greater than 3600 mm diameter, the design methods in AS/NZS 2041.1 may not apply.2 Guidelines on requirements that may need to be specified at the time of calling for tenders or quotations and information to be supplied by the manufacturer are detailed in Appendix A.4 Information on means of demonstrating compliance with this Standard is given in Appendix B.5 When intended for use in internally pressurized applications, specialist advice should be obtained.

First published as AS 1761-1979.Second edition 1985.AS 1761-1985 jointly revised and redesignated, in part, as AS/NZS 2941.4:2010. First published as AS 1761-1979. Second edition 1985. AS 1761-1985 jointly revised and redesignated, in part, as AS/NZS 2941.4:2010.