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Demolition risks
This report is about the collapse of a flat slab building that occurred overseas whilst the top floor of the building was being demolished onto the next floor down.
1 January 2008
CROSS Safety Report
Report ID: 96
Region: CROSS-UK
Further demolition collapse
This report is of an incident that occurred recently in a UK city when a floor suffered a structural collapse during the demolition of a reinforced concrete building.
1 January 2008
CROSS Safety Report
Report ID: 90
Region: CROSS-UK
Plastic spacers in slabs
A reporter has spotted plastic rails about 1.5 m long being used to support the bottom rebar mat of a slab.
1 July 2015
CROSS Safety Report
Report ID: 431
Region: CROSS-UK
Computer analysis and slab design twisting moments
A reporter has noticed on many occasions when checking reinforced concrete and post-tensioned slab designs that engineers often neglect to consider twisting moments when arriving at slab design moments.
1 October 2014
CROSS Safety Report
Report ID: 441
Region: CROSS-UK
Shear failure during demolition
A reporter raises concerns about how a number of buildings being demolished ‘top-down’ have suffered from partial collapse during the process.
1 January 2016
CROSS Safety Report
Report ID: 523
Region: CROSS-UK
Risks from off-site manufacture and hybrid construction
A reporter was recently investigating a ‘near miss’ involving concrete construction in which pre-cast and in-situ concrete were used in combination.
1 January 2016
CROSS Safety Report
Report ID: 529
Region: CROSS-UK
Compatibility at RC column to slab joint - strong column/weak slab
A reporter who was reviewing the structural design of a commercial building raises concerns over the compatibility at column/slab joints when different grades of concrete are used.
1 April 2012
CROSS Safety Report
Report ID: 296
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
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