Skip to main content

CROSS Safety Report

Shutter failure during concrete wall pour

Report ID: 766 Published: 1 April 2019 Region: CROSS-UK

This report is over 2 years old

Please be aware that it might contain information that is no longer up to date. We keep all reports available for historic reference and as learning aids.


A reporter describes how a shutter failed during a concrete wall pour due to resin fixed ties not being allowed to cure.

Key Learning Outcomes

For construction professionals:

  • Acting on advice given by the Temporary Works Coordinator can ensure work activities are carried out safely

  • Regular toolbox talks are a good way of engaging with work crews and ensuring information such as resin anchor curing times are communicated to them

Full Report

Find out more about the Full Report

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 concrete wall was being poured between a shutter and exposed piles. The shutter was tied to the exposed piles at the top and bottom using proprietary 15mm diameter high tensile threaded bars. Part way through the pour, says the reporter, the concrete pump broke down and needed repair. On the final load of the pour, the concrete was pumped into the shutter too quickly applying to much pressure on the ties at the bottom of the shutter, causing them, and the shutter, to fail.

It was found that some of the ties had not been correctly installed initially and had been replaced by resin fixed ties anchored to the piles. The Temporary Works Co-ordinator (TWC) advised that the resin anchors should be allowed to cure for 16 hours, but this advice was not followed and hence the failure occurred.

Expert Panel Comments

Find out more about the Expert Panels

Expert Panels comment on the reports we receive. They use their experience to help you understand what can be learned from the reports. If you would like to know more, please visit the CROSS-UK Expert Panels page.

There are no Expert Panel comments on this report. The Expert Panels are only asked to comment on selected reports. These are normally reports where there is an opportunity for them to help you understand what can be learned from the report.

Submit a report

Your report will make a difference. It will help to create positive change and improve safety.

Our secure and confidential safety reporting system gives professionals the opportunity to share their experiences to help others.