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CROSS regions
Stadia crash barriers
Some hollow steel posts forming part of a crash barrier, which were only 4-5 years old, had filled with water that had caused the damage on freezing in winter.
1 February 2001
CROSS Safety Alert
Region: CROSS-UK
Unsafe design of retrofit cantilever balconies
A structural assessment of a number of new balconies being added to an existing building revealed critical concerns in respect of fixings back into the existing brickwork.
26 August 2022
CROSS Safety Report
Report ID: 1128
Region: CROSS-UK
Freezing splits galvanised SHS columns
Concerns were raised after several square hollow section members split vertically on a partially complete construction site.
1 April 2012
CROSS Safety Report
Report ID: 253
Region: CROSS-UK
Failure of cantilevered stone staircase
During the renovation and change-of-use conversion of a former minor stately home built around 1830, under pedestrian loading, a ‘cantilevered’ stone staircase partially collapsed without warning.
21 February 2023
CROSS Safety Report
Report ID: 1147
Region: CROSS-UK
RAAC planks in a 1970s shopping centre
An existing large shopping centre built circa 1975 had a number of external storerooms and loading bays with roofs constructed using reinforced autoclaved aerated concrete (RAAC) planks. The planks had deflected to the extent that they needed replacing.
20 February 2023
CROSS Safety Report
Report ID: 1155
Region: CROSS-UK
Car park staircase collapse at construction joint
The top flight of a staircase to a multi-storey concrete car park collapsed approximately 10 years after construction.
1 July 2008
CROSS Safety Report
Report ID: 106
Region: CROSS-UK
Freeze/thaw effects on RHSs and unexpected hydrogen generation
A reporter provides their views of the freezing effects on rectangular hollow sections (RHSs) and how this could be related to Liquid Metal Assisted Cracking.
1 October 2014
CROSS Safety Report
Report ID: 434
Region: CROSS-UK
Further issues with freezing and galvanised hollow sections
A reporter was involved in correcting a cold formed galvanised square hollow section (SHS) four storey balcony structure where longitudinal splits formed in at least two of the four columns.
1 January 2014
CROSS Safety Report
Report ID: 314
Region: CROSS-UK
Further report on freezing of water in hollow sections
A reporter has a further warning on the issue of freeze/thaw cracking following report 434 after their firm encountered a similar problem on a UK project and investigated the matter.
1 January 2017
CROSS Safety Report
Report ID: 579
Region: CROSS-UK
Freeze and thaw of another RHS
Further to reports about the freezing of water in hollow sections a correspondent has sent photos of a section of mild steel RHS that was removed from a bridge and shows the bulging that can occur.
1 January 2015
CROSS Safety Report
Report ID: 485
Region: CROSS-UK
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