Exploring the frangibility of steel circular hollow section small sign support posts
Submission Date: February 8, 2018 Journal
Suggested Citation: Burbridge, A., Spathonis, J., Kung, L., Douglas, J. and Moir, L. (2018). Exploring the frangibility of steel circular hollow section small sign support posts. Journal of the Australasian College of Road Safety, 29(1), 21-29.
Desirably sign support posts should be frangible if not shielded. Review of technical governance in the Australian/New Zealand context suggests that guidance to practitioners on what is frangible varies between jurisdictions. Australian/New Zealand Standard AS/NZS 3845.2:2017 prescribes test requirements for frangibility. This study uses results from full-scale crash testing combined with theoretical analysis to explore the expected crash performance of circular hollow section (CHS) sign supports. The study recommends the CHS sign support that is expected to represent an upper threshold of frangibility that would satisfy the provisions of Australian/New Zealand Standard AS/NZS 3845.2:2017.