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- CROSS-UK Newsletter 2 (1)
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- CROSS-UK [sub-heading only] (25)
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CROSS regions
Reinforced aerated autoclaved concrete planks found on pitched roof of 1990s hospital building
A building constructed in the early 1990s has been found to contain reinforced aerated autoclaved concrete (RAAC) planks. This date is important since it is much later than the previously thought last significant use of RAAC in buildings in the UK and potentially affects the scope of buildings that could require screening for RAAC problems.
26 August 2022
CROSS Safety Report
Report ID: 1125
Region: CROSS-UK
Failure of cast-in wire lifting loops on manhole cover slabs
A cast-in wire lifting loop failed when lifting a 4m diameter precast manhole cover slab into place.
23 May 2022
CROSS Safety Report
Report ID: 629
Region: CROSS-UK
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
Collapse of unusual hybrid concrete and steel strand truss on school roof
This report concerns the collapse of a school hall roof which resulted from the failure of one of a number of unusual hybrid concrete and steel strand trusses. The trusses consist of a precast reinforced concrete top chord and verticals with a bottom chord of tensioned steel strands. The failure of the truss resulted in the collapse of the supported flat roof local to the failed truss, and da...
25 May 2023
CROSS Safety Report
Report ID: 1227
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
Temporary instability of columns
Concerns were raised by a reporter on the temporary stability of concrete columns during construction.
2 February 2023
CROSS Safety Report
Report ID: 872
Region: CROSS-UK
Incorrect lifting system used for precast concrete stair elements
A reporter was asked to inspect a precast concrete stair unit which was exhibiting cracking around the lifting anchor locations after being de-moulded.
13 December 2022
CROSS Safety Report
Report ID: 883
Region: CROSS-UK
Precast concrete panel fixing
A 1960s flyover was being demolished and an interesting feature came to light how the precast concrete edge panels were fixed.
30 June 2022
CROSS Safety Report
Report ID: 965
Region: CROSS-UK
Precast concrete planks - durability and potential safety concerns
A reporter raises concerns over the recent collapses of precast concrete floor units that are installed throughout the UK.
1 April 2007
CROSS Safety Report
Report ID: 77
Region: CROSS-UK
Concrete half joints
Poor reinforcement detailing and installation in a half joint led to the collapse of a series of beams and precast concrete slabs.
1 January 2008
CROSS Safety Report
Report ID: 88
Region: CROSS-UK
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