AS3995-1994 Design of Steel Lattice Towers & Masts

[l_namali]

AS3995-1994 Design of Steel Lattice Towers & Masts

Document Type: Standard
Status: Current
Publisher: Standards Australia
Committee: BD-073
Supersedes: AS 3995(Int)-1991 and DR 93147

Abstract
This Standard sets out procedures for the determination of design wind speeds and wind loads to be used in the structural design of steel lattice towers and masts for communication purposes. It further sets out the basis for the strength assessment of members and connections of lattice towers and masts. This Standard incorporates design and analysis of guyed lattice towers and masts, design of cable tension members, footing design and criteria for assessment of existing structures. Guidance relating to maintenance and inspection, and access to steel lattice towers and masts is given in the Appendices. It is not intended to apply to the structural design of transmission line structures. The design of aluminium and cold-formed steel, other than those complying with AS 1163, is not covered by this Standard, except in relation to access to the lattice towers and masts.

Scope
This Standard sets out the procedures for determination of design wind speeds and wind loads, and other appropriate standards to be used in the structural design of steel lattice towers and masts, with or without ancillaries such as antennas, for communication purposes. It also applies to other lattice towers and masts where the predominant load is wind load on the structure. It further sets out the basis for the strength assessment of members and connections of lattice towers and masts.

This Standard is not intended to apply to the structural design of transmission line structures. The design of cold-formed steel, other than those complying with AS 1163, and aluminium is not covered by this Standard.

For all other aspects of design not specifically mentioned herein, reference shall be made to the appropriate Australian Standards including AS 1170 Parts 1 and 2, AS 1554, AS 1559, AS 1650, AS 3569 and AS 4100.

NOTES:
1 A general framework for maintenance and inspection of existing structures is given in Appendix A.
2 Recommendations for access to steel lattice towers and masts are given in Appendix B. If required by the Health and Safety Authority, provision of safe access to such structures should be considered at the design stage.

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