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Recent Reports

682 Polyethylene core cladding panels used on residential high rise building

A reporter is writing as a precautionary measure following the Grenfell Tower Fire to say that a similar type of rainscreen panel, ie a polyethylene core with metal skin, was used at a residential tower block which they visited in 2011. It is believed that this block is privately owned so would not necessarily be picked up in a review of buildings owned by local authorities and housing associations.

664 Steel canopy collapse during building completion works

During the construction of a major new school facility, a 57 metre single span structural steel truss failed, resulting in the catastrophic collapse of a steel framed canopy supported by the truss. At the time of failure five workers were on the top of the canopy, some 15 m above ground level. All received significant injuries but survived. The immediate cause of the failure was associated with the fracture of a number of sub-size fillet welds joining paired load bearing tie bars at nodal points.

Current matters
under consideration


  • Quality of construction
  • Fire in buildings
  • Quality of supervision on site
  • Use of Resident Engineers
  • Robustness
  • Weather damage to buildings

Reports on these subjects are sought, as well as on any other concerns.


July 2017: CROSS Newsletter No 47 published

The programme depends on receiving reports and individuals and firms are encouraged to participate by sending concerns in confidence to Structural-Safety

This version of the site designed to include participation by national organisations interested in Confidential Reporting on Structural Safety. The aim is to have an International Group where each country runs its own scheme and has its own identity, but reports and publications will be held in a common data base for engineers everywhere to use. Lessons to be learned are not restricted by geography. The first to join is Southern Africa which encompasses the Republic of South Africa, Swaziland, Lesotho, Zimbabwe, Botswana, Mozambique, Zambia and Namibia. Their Sponsors are the Joint Structural Division, the South African Institution of Civil Engineers and the Institution of Structural Engineers.


CROSS-SA in association with Structural Safety works with the professions, industry and government on safety matters concerned with the design, construction and use of building and civil engineering structures. It:

  • collects confidential data on the concerns of structural and civil engineers and others
  • provides comments in relation to these concerns
  • maintains a data base of reports and publications
  • collects data from public sources on failures, collapses and relevant incidents
  • considers whether unacceptable risk exists, or might arise in the future
  • promotes a positive attitude to learning from experience
  • helps to influence changes to improve structural safety.


Confidential Reporting on Structural Safety (Southern Africa) is the allied to CROSS, the scheme established by SCOSS in 2005 (within the UK) to improve structural safety and reduce failures by using confidential reports to highlight lessons that have been learnt, to generate feedback and to influence change. Reports sent to CROSS & CROSS-SA are completely confidential, and neither personal details nor information that could be used to identify a project or product are used.


The Standing Committee on Structural Safety is the independent body established in 1976 to maintain a continuing review of building and civil engineering matters affecting the safety of structures. SCOSS aims to identify in advance those trends and developments which might contribute to an increasing risk to structural safety. There is more information in About Us.



How to Report

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