Structural Condition Assessment of Water Trunk Mains

Abstract

As part of the exercise to quantify appropriate levels of investment, the Water Industry has been investigating the condition of its under ground assets. Many of its trunk main systems, which form a critical initial link in the distribution of water, were constructed around the turn of the century. Over the past six years WRc has developed a methodology and adapted various measurement techniques to carry out structural condition assessment of these systems. The approach has now been described and illustrated with actual case histories in a guidance manual which was produced with the financial support of various water utilities. This paper outlines the methodology and provides details of its application.