Management of concurrent delay in construction

The presence of concurrent delay in construction project delay claims adds to the complexity of analysis. Concurrent delays are two or more delays occurring at the same time; these have always been difficult to resolve. With a critical path network, it is possible to determine compensation in time, and to some degree in cost, for the delays arising from an eventuality in a construction project. The theory of concurrent delay has become the most common defense raised by owners faced with a contractor's claim for delay damages. The contractor must therefore address this issue if he is going to realistically analyze his claim. The defense is somewhat analogous to the theory of "contributory negligence" in personal injury lawsuits. Analysis of concurrent delay can require a considerable amount of time and resources, depending upon the availability and reliability of project information. This article reviews the theory and practice of concurrent delay analysis, and discusses an example of concurrent delay assessment. This assessment of delay (in days) is valuable to project managers because it becomes a basis for financial calculations to determine penalties or other damages.