Quick Search

Recent Reports

399 Tower crane - failure of loadbearing part

A tower crane suffered a failure of one of its four main legs approximately 12m below the slew ring. The fault was discovered, says the reporter, as a result of the tower crane operator reporting some unusual banging and vibrations

438 Snow sliding off industrial building roofs

Due to a snow slide a lean-to roof at lower level than the main roof of a large industrial building collapsed and and ground level equipment was damaged.

Current matters
under consideration

Reports or feedback on these subjects will be welcome.



October 2014: CROSS Newsletter No 36 published

September 2014: SCOSS Alert - Preventing the collapse of free-standing masonry walls published

The success of CROSS depends on individuals and firms participating by sending reports of their experiences and concerns in confidence to Structural-Safety. The names of reporters are never revealed and only the technical aspects that could help structural engineers are published. 

If you have an experience that could be useful to others please contribute by sending a report to www.structural-safety.org/confidential-reporting/ submit-report/.



Structural-Safety combines CROSS (Confidential Reporting on Structural-Safety) and SCOSS (Standing Committee on Structural Safety) to work 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.

CROSS aims 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. SCOSS 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.


How to Report

Online submission:
Submit by post: