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CROSS Safety Report

Bridge component failures

Report ID: 141 Published: 1 July 2009 Region: CROSS-UK

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Overview

A reporter raises their concerns that not enough thought is being given to structural redundancy and buildability for bridges.

Key Learning Outcomes

For civil and structural design engineers:

  • Careful consideration should be given to structural redundancy and the buildability of bridges

Full Report

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The Full Report below has been submitted to CROSS and describes the reporter’s experience. The text has been edited for clarity and to ensure anonymity and confidentiality by removing any identifiable details. If you would like to know more about our secure reporting process or submit a report yourself, please visit the reporting to CROSS-UK page.

 

A reporter is concerned that not enough thought is being given to structural redundancy and buildability for bridges. They think that buildability should now be automatic and a legal requirement under CDM Regulations. The need for structural redundancy is so obvious, especially regarding crucial small components that it is (nearly) a surprise it has to be done over again. 

Especially considering recent bolt connection failures and gusset plates. They say it is a shame if the issues (apparently) became concentrated around price. The two envelope system comes to mind, wherein technical excellence and price are considered separately - without the first, the second should not come into it, cheapest or otherwise.

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