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How To Report

Who Can Report

Reports are welcome from anyone involved in the building, bridge, and civil engineering industry, including structural engineers, civil engineers, designers, contractors, clients, inspectors, maintenance and operation teams, project managers, local authorities, statutory authorities and government.

Reports are also welcome from others who have an interest in structural safety.


Any report submitted to CROSS-US shall be treated as confidential, with the reporter’s details and any identifiable details in the report only viewed by the Designated Persons.

Unless otherwise disclosed during the collection, personally identifiable information that may be collected in connection with visitors to this website is retained by CROSS-US. We never sell, transfer or otherwise disclose this personally identifiable information outside CROSS-US except where this disclosure is required by law.

Anonymous Reports

Anonymous reports will not be accepted because the Designated Persons will communicate with the reporter as they process the report and the contents of the report cannot be verified.

Urgent Matters

CROSS-US is a confidential reporting system to capture and share lessons learned which might not otherwise have had formal recognition. Accordingly, CROSS-US is not able to give advice and does not have any power to intervene in relation to specific projects or matters of concern. In circumstances where urgent advice is needed in relation to specific matters of structural safety, or you consider there to be a potential risk to health and safety and/or the environment, your first step should be to raise this with the organization(s) concerned as far as practicable (and, if applicable, your direct manager).

If this does not resolve the issue, or if the response received is inadequate, then the appropriate regulator should be informed. In the United States, this may be the relevant Occupational Safety and Health Administration in your jurisdiction, the approving authority or local government. In such cases, the reporter should consider whether it is necessary to report the matter on a non-confidential basis.

CROSS-US may be able to offer advice on what action might be taken to raise awareness of the reported concern.

Online Reporting

The online form can be accessed on the Submit Report page. Reporters should fill out the form and give a description of a safety concern or event. The form asks for the reporter's name and contact details, but these will only be used to communicate with the reporter as their report is processed and to verify the contents of the report. The form will be seen only by the Designated Persons, who will remove features that identify a structure, firm, or product so that the report is anonymized. Only then will it be processed further.

Photographs and PDFs can also be submitted.

CROSS-US will maintain the confidentiality of the reporter and will not disclose any of the reporter’s personal details.

Offline Reporting

For offline reporting, contact administrator@cross-us.org and ask for the CROSS-US postal address. This will be given along with a reference number and on arrival the envelope will be opened and the contents seen only by the Designated Persons.

Example Reports

A report should give:

  • a description of the event or concern
  • if there was a failure then the cause of the failure if known
  • lessons that could be learnt.

The following examples show how an important message can be conveyed in a few lines.

479 Dangerous alterations

An existing building was being converted to another use, says a reporter. The structure is being replaced, but the facade retained. The construction method was to create a new frame within the existing, with columns punching through the existing slab. The facade was then to be tied into the new frame and the old structure removed. The local authority building control officer went to site and witnessed on an upper floor that the columns had been removed out of sequence, before the new frame had been constructed. The existing beam over had been left simply supported, with no continuity over the columns. Upon removal of the columns, the beam tripled in length and with load reversal at the column points, the compression flange had no positive connection. It seemed that the floor over was spanning through membrane action, as there was luckily very good tying between members. The building control officer asked for the beams to be propped immediately and no damage occurred. The reporter says that this highlights poor site control, an inadequate construction plan and a lack of understanding of the structure by the site operatives. Furthermore, he says, the structural engineer did not make any visits to the site.

727 Questionable tension bracing arrangement

A reporter is concerned about the arrangement of diagonal tension bracing in one bay of a building. The connection is formed of 4 stainless steel bars connected by what looks to be a circular plate. The bars are out of alignment due to incorrect measurement or poor fabrication. To make the connection fit, the ends of the bars have been ground down and the plate skewed resulting in an eccentric loading arrangement. In the case of a brace under tension, the plate will rotate about its centroid due to the eccentricity of the tension force. The resulting rotation will force the opposing bars into compression increasing the likelihood of the bars buckling - all the more critical if the length of the bars is not as designed.

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How to Report

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