Maintaining historic quay infrastructures in the Channel region



The study is intended to address structural fatigue of the historic quay wall structures in Torquay Harbour. The study considers the current condition of the Quay structure with a view to making a series of cost efficient recommendations for remedial works to maintain it. This study complements the accompanying corrosion study with a view to informing Torbay Council of the the need to protect the marine infrastructure assets of the Tor Bay harbours and to assist in assessing the value of renovations. 

This structural report on the Old Fish Quay, Torquay Harbour, considers the current condition of the Quay structure with a view to making recommendations for remedial works to maintain it in a condition suitable for continued use both as a leisure and a small commercial fishing facility.

Sheet pile defects were recorded in an underwater survey (see pictures)and at surface inspection. Although measurements on good steel yield an actual corrosion rate aligned with guide rates for the marine environment, zones of significant Accelerated Low Water Corrosion (ALWC) and upper pile corrosion defects have reached a condition warranting repair in the near future.

Significant this FLIP study highlights that failure to undertake remedial works could result in significant loss of commercial and leisure berthing opportunities at the quay structure.  Cathodic protection to the existing sheet piling below mid tide, with a design life of 25 years, and the repair of much of the upper sheet piling is recommended to be carried out in the near future.