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Rusting on laurels

Letters

As a specialist contractor involved in the inspection and maintenance of concrete structures across the UK I was pleased to read the article regarding the extensive corrosion of the steel tie downs in Trinity Bridge (NCE last week).

Note that these tie-downs were the new ones which replaced the original units that also corroded. There will always be a steady flow of repair work while designers continue to ignore corrosion risks when designing structures.

The problem arises because the structures are designed for structural integrity and if codes are followed it is assumed that they will be durable. This is not good enough.

All new designs should also undergo a detailed corrosion risk assessment by a qualified corrosion engineer to identify high risk areas and deal with them using a range of techniques.

The Manchester region has some of the best corrosion engineers in the world and there was an international conference on this subject at UMIST in February.

John Drewett (M), marketing director, Concrete Repairs Ltd, JDrewett@concreterepairs. co. uk

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