Causes of Ironwork Failure
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Failures of highway ironwork are unfortunately commonplace. Scott Wilson Kirkpatrick identified in a study that on principal routes, half of all of manholes will have failed within 2 years, but why?
The failure modes have been well studied and fall into three main categories:



The problem with traditional repairs
Traditional repairs fail time and time again. Studies of 1,500 highway ironwork failures showed that in 100% of circumstances, more than one failure mode was identified including bedding mortar, packing, brickwork, road surface surround and ironwork.
The main problems surrounding traditional repairs are:
- Structural problems
- Financial problems
- Litigation problems
