Finite Element Evaluation of the Remaining Mechanical Strength of Deteriorated Cast Iron Pipes

Abstract

The problem of deteriorating water pipes, resulting in leaks and breaks, affects municipalities worldwide. Corrosion appears to be a leading factor affecting pipe strength and service life. While techniques to evaluate the corrosion damage of in-service pipes are being developed successfully, “affordable” methods to estimate the remaining strength of such pipes are presently not available. A three-dimensional finite element strength evaluation method, as presented herein, is able to predict the strength of corrosion-deteriorated cast iron water pipes subjected to specific loading conditions. It can be used by engineers to identify those pipe sections which require attention.