Abstract: “CPM has failed practically for scheduling repetitive projects and hence LSMs are used. LOB is the most commonly used LSM for scheduling typical repetitive projects. In CPM, non-critical activities have time float which is considered a critical asset or resource. In addition to time float, repetitive activities may have rate float. Extending traditional float and criticality analysis to repetitive activities is a remarkable demand in the literature. In this paper, various float types of typical repetitive activities are analyzed and calculated. Time float concept of non-repetitive activities is extended to repetitive ones. Rate float as an inherent attribute of repetitive activities is also defined and analyzed. Time and rate floats of typical repetitive activities are calculated in an easy analytical approach. An example repetitive project is used to demonstrate float calculations and obtained results are then analyzed and discussed. Introducing float concepts to LOB apparently extends”

Keywords: Repetitive Projects, Scheduling, Typical Activities, Line of Balance, Time and Rate Floats