In construction claims, the term "delay" is used to mean two different but related matters. Delay is often used to mean the time period during which some part of the construction project has been extended beyond what was originally planned because of unanticipated circumstances. Delay can also be the incident that affects the performance of a sequence or flow of work. It is distinguished from delay in that the duration of work activities or the overall completion may not be extended [5]. Disruption, therefore, is an activity-specific loss of productivity caused by changes in the working conditions under which that activity was performed. Lost productivity is a classic result of disruption, because in the end more labor and equipment hours will be required to do the same work, Delay and disruption are different types of damages. Disruption damages can be traced to specific activities; delay damages can-not. Delay damages are caused only by delays either to the over-all contract or to project completion; disruption damages are caused by changes in working conditions that can occur regard-less of whether the project's completion date changes. In this means, the absence of delay does not preclude the finding of disruption, and the absence of delay damage does not preclude the finding of disruption damages [6].
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