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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
Construction period of RAAC planks
A reporter says that there are structural issues with reinforced autoclaved aerated concrete (RAAC) panels installed in a building as late as 1998. This date is significantly later than previous reports suggest as the last significant use of RAAC elements in the UK.
20 February 2023
CROSS Safety Report
Report ID: 954
Region: CROSS-UK
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
Removal of internal structure
The roof trusses, 6m above the ground floor, had been left supported on props made by nailing floor joists together; one at each party wall position.
1 July 2006
CROSS Safety Report
Report ID: 46
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
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
Failure of RAAC planks in schools
A reporter was asked to investigate a reinforced autoclaved aerated concrete (RAAC) roof which had collapsed in a school.
1 April 2020
CROSS Safety Report
Report ID: 908
Region: CROSS-UK, CROSS-AUS, CROSS-US
Reinforced autoclaved aerated concrete roof planks - sharing experiences
A reporter has surveyed a number of buildings with reinforced autoclaved aerated concrete (RAAC) roof planks and wants to share their experiences to help others.
1 April 2020
CROSS Safety Report
Report ID: 874
Region: CROSS-UK, CROSS-AUS, CROSS-US
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