Braces and supports
Braces used to provide seismic restraint to components of engineering systems should be designed to match or exceed the earthquake load demands determined earlier in the design process.
Typical bracing components to restrain a piped service.
Typical bracing components to restrain a piped service.
Structural steel braces and fasteners must be fabricated to comply with the material standards and grades specified in NZS 4219:2009 Table 12.
|
Brace or fastener type |
Material standard |
Grade |
|
Angles |
AS/NZS 3679.1:2010 Structural steel – Hot-rolled bars and sections |
Grade 300 |
|
Flats |
AS/NZS 3679.1:2010 |
Grade 300 |
|
SHS |
AS/NZS 1163:2009 Cold-formed structural steel hollow sections |
Grade C350LO |
|
Bolts |
AS 1111.1-2000 ISO metric hexagon bolts and screws – Product grade C – Bolts |
Property class 4.6 |
|
Threaded rods |
AS 1111.1-2000 |
Property class 4.6 |
|
Nuts |
AS 1112.3-2000 ISO metric hexagon nuts – Product grade C |
|
(From NZS 4219:2009, provided by Standards New Zealand under licence 001149)