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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
Preventing the collapse of free-standing masonry walls
There have been collapses of free-standing masonry walls over many years and there have been fatalities and numerous injuries; particularly to children.
1 September 2014
CROSS Safety Alert
Region: CROSS-UK, CROSS-AUS, CROSS-US
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
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
Long term risks for ground anchors
A reporter is concerned about the inspection and maintenance of ground anchors that are used for strategic flood defences.
1 October 2007
CROSS Safety Report
Report ID: 87
Region: CROSS-UK
Suspended access platform collapse - Chicago
In 2002 a suspended access platform fell from the 100 storey John Hancock building in Chicago USA.
1 December 2002
CROSS Topic Paper
Region: CROSS-UK
Torre Windsor building fire - Madrid
The 30 storey Torre Windsor office building consisted of a reinforced concrete frame and steel load-bearing mullions around the perimeter.
1 June 2005
CROSS Topic Paper
Region: CROSS-UK
Decorative lights and banners can damage buildings
A reporter raises concerns about large banners and decorative lights that are often put up and attached to buildings without any thought given to the engineering considerations.
1 October 2009
CROSS Safety Report
Report ID: 159
Region: CROSS-UK
Emergency motorway lane closure during concrete repairs
This report highlights how confusion during concrete repair works led to an unplanned emergency lane closure of a bridge carrying a motorway.
1 July 2020
CROSS Safety Report
Report ID: 926
Region: CROSS-UK
Disproportionate collapse assessment of large panel system buildings
A reporter has become concerned by the approach being taken by some engineers to assess the risk of disproportionate collapse due to fire in large panel system (LPS) buildings.
1 January 2020
CROSS Safety Report
Report ID: 885
Region: CROSS-UK
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