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CROSS regions
Incorrectly installed tension control bolts could have led to serious consequences
A reporter finds incorrectly installed system HRC preload bolt assemblies, better known as tension control bolts, during a site inspection of a new highway bridge over a railway. The incorrectly fitted bolts could have had major structural implications, and led to other safety risks, if the installation error had not been spotted.
24 May 2023
CROSS Safety Report
Report ID: 1196
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
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
Excessive deflection of spliced steel beam
A long-span primary steel beam deflects excessively at its splice during concreting of the floor slab.
30 August 2022
CROSS Safety Report
Report ID: 1111
Region: CROSS-UK
Roof collapse at primary school
Blocked drainage outlets likely lead to the build-up of water on a school roof which collapsed.
1 July 2020
CROSS Safety Report
Report ID: 958
Region: CROSS-UK
Unconservative design of flat slab due to software modelling issues
A reporter discusses how a design/modelling problem caused an under-designed reinforced concrete (RC) slab to be constructed.
1 April 2020
CROSS Safety Report
Report ID: 886
Region: CROSS-UK
Poor quality of structural design on high-rise buildings
The correspondent has been very concerned about the quality of structural engineering on some projects in recent years, particularly for certain high-rise buildings.
1 July 2019
CROSS Safety Report
Report ID: 823
Region: CROSS-AUS
Inadequate design of cantilever glass barriers
A reporter has observed a growing number of cases where cantilever glass balustrades in public buildings are, in their view, inadequately designed.
1 April 2018
CROSS Safety Report
Report ID: 735
Region: CROSS-UK
Safety issues with composite metal deck floors
A contractor had a near miss when pouring a concrete slab with permanent formwork.
1 January 2012
CROSS Safety Report
Report ID: 288
Region: CROSS-UK
Permanent formwork to slabs
Concerns are raised over deflection issues that are not being considered when using permanent formwork.
1 January 2011
CROSS Safety Report
Report ID: 215
Region: CROSS-UK
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