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CROSS regions
Failure of prestressed hollowcore units during storage and transport
A reporter shares their experience of the failure of prestressed hollowcore units during storage and transport.
1 June 2022
CROSS Safety Report
Report ID: 748
Region: CROSS-UK
Concrete system buildings - need for period inspection
Evidence of corrosion of tendons in post-tensioned components came to light which was associated with exposure of tendons to moisture in voids in ducts and sometimes also the presence of chlorides.
1 December 2001
CROSS Safety Alert
Region: CROSS-UK
Lessons learned from the 2018 Florida bridge collapse during construction
This was a bridge of an unusual design and was being constructed in an unusual manner. The main 53m pre-stressed pre-cast concrete span truss was in position when cracks appeared at a node and over a period of almost three weeks they visibly worsened until collapse occurred.
1 December 2020
CROSS Safety Alert
Region: CROSS-UK, CROSS-AUS, CROSS-US
Problem when launching a prestressed beam
When lowered onto its elastomeric bearings, a 40m span post-tensioned ‘I’ beam started to move towards the outer edge of the pier cap.
30 July 2021
CROSS Safety Report
Report ID: 1027
Region: CROSS-UK
Temporary movement joint in slabs not installed correctly
Dowels in temporary movement joints for a slab were not installed correctly, impacting the structural behaviour.
29 March 2021
CROSS Safety Report
Report ID: 998
Region: CROSS-UK
Pre-stressing ducts
A reporter has come across a situation where during grouting of the ducts in a slab, patches of concrete as big as 0.5m x 1m and 30mm thick fell on to the ground creating a safety hazard.
1 October 2008
CROSS Safety Report
Report ID: 89
Region: CROSS-UK
Post-tensioned precast concrete tank failure
A utility company suffered a sudden and catastrophic failure of a concrete tank at a sewage treatment works.
1 July 2009
CROSS Safety Report
Report ID: 147
Region: CROSS-UK
Shear failure during demolition
A reporter raises concerns about how a number of buildings being demolished ‘top-down’ have suffered from partial collapse during the process.
1 January 2016
CROSS Safety Report
Report ID: 523
Region: CROSS-UK
Steel balconies fixed to precast hollowcore floor planks
A reporter is concerned about the suitability of providing a retrofitted steel balcony requiring moment connections to the sides of typical hollowcore floor planks.
1 July 2017
CROSS Safety Report
Report ID: 620
Region: CROSS-UK
Failure of prestressed hollowcore units during lifting
A reporter raises concerns about how prestressed hollowcore units can fail during lifting if not carefully designed, planned, and managed.
1 October 2018
CROSS Safety Report
Report ID: 749
Region: CROSS-UK
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