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Glued on stainless steel panels fall

A ceiling in a retail setting was designed to be faced with reflective finish panels. The contractor proposed stainless steel bonded to MDF with folded edges and concealed mechanical restraint. The designer overruled the contractor and selected an adhesive-only solution which was implemented. Some months later, several panels failed, with some stainless steel facings falling to the floor.

The potential impact of scaffolding on fire safety

An issue has been raised with CROSS regarding the risk assessment process when scaffolding is present around an in-use building. It is considered that combustible scaffolding elements can potentially facilitate external fire spread, and additionally impact the performance of some of the building’s fire safety measures.

Vegetation damage to railway arches

Lack of clarity as to maintenance responsibilities leads to degradation of railway arches.

Rotting plywood decking on grandstand

During visual structural inspections of temporary demountable grandstands, a walkway board failed when it was walked on.

Another example of brick slips falling from height

Another example of defective brick slips falling from the facade of a building.

Inspection and maintenance of Super-T bridge girders

Doubts exist about the durability and maintenance of bridge Super-T girders as a result of lack of access for inspection of sealed internal cavities.

Effects of scale

This Alert has been prompted by concerns raised about some particularly large structures and is based on evidence made known to SCOSS.

Square Hollow Section (SHS) expansion due to freezing

A reporter has come across problems in British Columbia (temp range -30 degrees to +40 degrees) of cracking to square hollow sections (SHS) due to the ingress of water and freezing.

Further report on freezing of water in hollow sections

A reporter has a further warning on the issue of freeze/thaw cracking following report 434 after their firm encountered a similar problem on a UK project and investigated the matter.

Freeze and thaw of another RHS

Further to reports about the freezing of water in hollow sections a correspondent has sent photos of a section of mild steel RHS that was removed from a bridge and shows the bulging that can occur.

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