CROSS Safety Report
Design of head track in cold formed steel framing
This report is over 2 years old
The reporter noticed that the in-house structural engineer for the steel frame company had not taken account of all the loads in the design of the head track.
Key Learning Outcomes
For civil and structural design engineers:
A quality assurance system within your organisation, that includes the internal checking of calculations, can help prevent safety issues such as this one from occurring
Competent supervision of design by experienced personnel can allow less experienced engineers to develop a feel for what is the right solution
It is good practice to carry out sense checks and validate all design loads when carrying out third party checks as demonstrated in this report
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The reporter carried out a check calculation of a steel frame building to BS 5950 Part 5, Code of Practice for the design of cold formed thin gauge sections. Floors made from ribbed metal deck covered with concrete were supported on steel stud wall panels below.
The head track of the wall panels supported the floor loads and the loads arising from the upper floors. The reporter noticed that the in-house structural engineer for the steel frame company had not taken account of all the loads in the design of the head track. This was a serious error and some wall panels had already been fabricated and had to be modified.
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Have any other engineers come across this problem and is it a one-off or is it symptomatic of a trend?
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