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Differing reinforcement couplers
On a recent project, because of supply problems, the contractor decided to change from the specified rebar couplers (type ‘A’) to those of another manufacturer (type ‘B’).
1 March 2006
CROSS Safety Report
Report ID: 28
Region: CROSS-UK
Foundation base plates for tower cranes
On two different contracts it was observed that the foundation base plates for tower cranes had suffered from low compaction of the concrete on which they rest.
1 October 2011
CROSS Safety Report
Report ID: 257
Region: CROSS-UK
Inadequate product testing for shear studs
A reporter raises concerns about a manufacturer providing testing information for a variant product based on a university student Master’s dissertation.
1 April 2019
CROSS Safety Report
Report ID: 790
Region: CROSS-UK
Repeating the same design mistakes
A correspondent who investigates engineering failures has shared common errors which engineers keep repeating.
1 October 2019
CROSS Safety Report
Report ID: 858
Region: CROSS-UK
Steel balconies fixed to precast hollowcore floor planks
A reporter is concerned about the suitability of providing a retrofitted steel balcony requiring moment connections to the sides of typical hollowcore floor planks.
1 July 2017
CROSS Safety Report
Report ID: 620
Region: CROSS-UK
Multi-storey car park foundations
Concerns are raised about the integrity of a completed car park structure following poor quality control procedures during construction.
1 October 2017
CROSS Safety Report
Report ID: 630
Region: CROSS-UK
Spalled concrete falls from rear face of drilled hole 26 floors up
A reporter describes how during drilling, an operator over drilled the hole causing spalling on the back face of the concrete.
1 July 2017
CROSS Safety Report
Report ID: 639
Region: CROSS-UK
Inadequate billets used in precast concrete connections
Whilst completing a third-party design appraisal, a correspondent found that solid steel billets intended to form the primary shear transfer mechanism between concrete beams and columns were insufficient for this purpose.
1 April 2019
CROSS Safety Report
Report ID: 705
Region: CROSS-UK
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