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CROSS regions
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
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
Concerns about punching shear in a flat slab
This report concerns potential shear failures in flat slabs. This originates from inconsistent design and detailing of the shear reinforcement where a proprietary shear link system is assumed in the design but not followed in detailing.
13 December 2021
CROSS Safety Report
Report ID: 1050
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
Concrete half joints
Poor reinforcement detailing and installation in a half joint led to the collapse of a series of beams and precast concrete slabs.
1 January 2008
CROSS Safety Report
Report ID: 88
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
Pre-stressing ducts
A reporter has come across a situation where during grouting of the ducts in a slab, patches of concrete as big as 0.5m x 1m and 30mm thick fell on to the ground creating a safety hazard.
1 October 2008
CROSS Safety Report
Report ID: 89
Region: CROSS-UK
Collapse of a hollow core unit
This refers to the collapse of one modest span precast hollow core concrete unit and the excessive deflection of others on a building which was under construction.
1 October 2012
CROSS Safety Report
Report ID: 258
Region: CROSS-UK
Missing rebar identified prior to concrete slab pour
A reporter describes how they often encounter issues such as missing reinforcement while carrying out pre-pour inspections.
1 January 2013
CROSS Safety Report
Report ID: 310
Region: CROSS-UK
Design responsibility for temporary stability of steel frame building
A reporter raises concerns about the division of responsibility for the temporary stability of a four-storey steel frame structure with precast concrete planks and a structural topping.
1 April 2019
CROSS Safety Report
Report ID: 789
Region: CROSS-UK
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