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Critical welding of structural steelwork missed
The designer of a steelwork roof frame found a critical fabrication error when inspecting steelwork on site before it was erected.
21 November 2022
CROSS Safety Report
Report ID: 1126
Region: CROSS-UK
Metal cladding panels fail and fall to ground
During high winds, a number of metal cladding panels failed and fell to the ground from a tall commercial building in a major UK city.
26 August 2022
CROSS Safety Report
Report ID: 1134
Region: CROSS-UK
Connection fixity considerations for steel frame modelling
This report concerns the modelling of joints when using computer programs. In some cases, engineers are applying rotational releases to joints in models but subsequently designing the connections as rigid. This leaves a fundamental mismatch between analysis and design which may lead to unsafe structural connections argues a reporter.
17 November 2022
CROSS Safety Report
Report ID: 1139
Region: CROSS-UK
Incorrect modelling of a cantilever
A steel framed building was incorrectly modelled and designed resulting in excessive deflection of part of the frame even before the frame was loaded with the self-weight of the building.
17 November 2022
CROSS Safety Report
Report ID: 1144
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
Concerns over corrosion of dissimilar metals in fixing cavity wall tie systems
A reporter is concerned about corrosion that may occur between dissimilar metals that can be used in cavity wall tie systems. The reporter has noted that stainless steel and carbon steel may be fixed together in wall cavities, which are damp environments, and that corrosion of dissimilar metals in contact may occur.
24 May 2023
CROSS Safety Report
Report ID: 1186
Region: CROSS-UK
Modern methods of construction and robustness
This report relates to the design of a low rise modular building and the requirement, or otherwise, for positive fixings between the superstructure and the substructure.
24 May 2023
CROSS Safety Report
Report ID: 1179
Region: CROSS-UK
Overloading a portal frame with suspended services
A reporter designing a single storey portal frame used a standard roof service loading of 0.25kN/m2. After the project was completed, a tenant for the unit took over fit out and added a considerable amount of sprinkler pipework into the roof. This created local overloading.
21 August 2023
CROSS Safety Report
Report ID: 1195
Region: CROSS-UK
Steelwork splices do not match design calculations
Remedial works had to be carried out after it was found that steelwork splices on site did not match calculations which were retrospectively provided by a contractor.
29 March 2021
CROSS Safety Report
Report ID: 916
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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