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The success of CROSS depends on individuals and firms participating by sending reports of their experiences and concerns in confidence to Structural-Safety. This is the oxygen of the system without which it could not function and continued development depends upon a good flow of reports. There are far more failures or concerns than are reported so there is therefore considerable scope for progress. The names of reporters are never revealed and only the technical aspects that could help structural engineers are published. Newsletters contain a selection of reports which are, together with others, published on the web site data base which is a resource for engineers to learn the lessons from the experiences of their peers. A major update of the web site has been completed. Most of the work has been associated with the Content Management System used for processing reports. There are several stages involved from receiving a new confidential report to producing a de-identified live report with comments, and this is now streamlined to give better efficiency and enable more data to be handled. Reports can also now incorporate pdfs. The comments on the reports we receive are from our panel of volunteer experts whose input is invaluable. They are from all sectors of the industry and their vast experience and knowledge is used to give impartial advice that can help prevent the type of events described from being repeated. Talks and presentations are given to groups and firms to promote the scheme and if you would like to be included contact structures@structural-safety.org. If you value the scheme and have an experience that could be useful to others please contribute by sending a report to www.structural-safety.org/confidential-reporting/ submit-report/. MORE REPORTS ARE ALWAYS NEEDED.
390 Fabrication issues with imported steelwork truss in Australia
The truss structure shown, says the reporter, illustrated significant defects and deflected after erection requiring rectification.
433 Failure of pre-cast concrete 'L' shaped retaining wall
A recent incident occurred on a site, where a temporary pre-cast retaining wall failed leading to a pile of clay approximately 3m high spilling through the wall.
380 Composition of new blocks
A UK firm has come across a new large precast concrete block range which seems to use a wide range of secondary recycled aggregates in its mix, including some potentially hazardous waste. They are manufactured by a European precast concrete manufacturing company and contain, amongst other material, Cathode Ray Tube (CRT) glass without proper crushing and treatment to remove lead and other contaminants.
375 Corrosion of plasterboard wall fixings
A reporter sent pictures from a site where metal plasterboard fixings had deteriorated only a few months after installation. The heads of the fixings were removed to reveal the extent of the corrosion.
368 Potentially dangerous excavation
A reporter has submitted this photograph of a potentially dangerous excavation.
384 Brick wall removed to leave precast panels unsupported
Unsupported precast slabs during demolition
385 Failure of existing basement wall
A basement retaining wall failed when a new basement was formed by excavating 1.8m.
354 Timber roof truss bracing problem
Lateral movement of the roof tiles on a 2-storey mid-terrace house built approximately 35 years ago with a trussed rafter roof led to the discovery of broken bracing.