Timber Condition Investigation on Fort George Bridge
The Problem
H+R were instructed to undertake a detailed timber condition investigation of the Principal and Ravelin Bridges at Fort George near Inverness following on from a preliminary survey undertaken 16 years previously, in order to provide cost-effective and sympathetic remedial advice, using environmental means where applicable.
The Solution
The investigation involved detailed visual and physical examination combined with micro-bore decay detection drilling of all components of the large-section supporting timber piers to determine the extent of any wet rot decay. Deep moisture content readings were taken from each hole drilled in order to profile the weight-for-weight (w/w) percentage of moisture within individual piers, and also to identify which pier elements were most affected and where, ultimately to identify root causes of moisture penetration. Detailed examination of the balustrading of both bridges was also undertaken in order to identify areas requiring repair or replacement.
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