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- CROSS-UK Newsletter 2 (1)
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CROSS regions
Accidental partial demolition of a beam
During a site visit, the permanent works design engineer noticed that hydro-demolition of the end of a floor supporting beam had taken place out of sequence. This introduced a pattern of bending moments and shear forces that were not considered in the original design.
6 April 2023
CROSS Safety Report
Report ID: 855
Region: CROSS-UK
Punching shear design spreadsheets
This is a technical note from a reporter about the methods their firm uses for punching shear design because there was concern about punching shear design spreadsheets possibly leading to potentially unsafe situations. .
28 March 2023
CROSS Safety Report
Report ID: 830
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
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
Concern over modelling of concrete frame building for construction stage
Independent check shows inadequate modelling of concrete frame building with transfer slab.
10 March 2022
CROSS Safety Report
Report ID: 1073
Region: CROSS-UK
Further example of incorrect finite element modelling
Concerns in respect of the sufficiency of finite element modelling of masonry walls as part of a reinforced concrete framed building.
20 February 2023
CROSS Safety Report
Report ID: 1145
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
Collapse of Large Panel System (LPS) buildings during demolition
In 2009, numerous progressive and unexpected collapses occurred during the demolition of Large Panel System (LPS) tower blocks.
1 April 2010
CROSS Safety Report
Report ID: 186
Region: CROSS-UK
Large Panel System (LPS) building structural refurbishment issues
A reporter from a firm of consulting engineers’ comments on his experiences when refurbishing 1960s Large Panel Structure (LPS) buildings around 2000.
1 July 2011
CROSS Safety Report
Report ID: 201
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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