In explaining how he selected his topic for this article, author Ronald M. Winter, PSP FAACE, says, "While working on the recommended practices for Critical Path Method (CPM) baseline schedule analysis and update schedule analysis, I noticed that we kept recommending that schedulers check milestone activities, but we never said how to do this. I realized this is because milestones require entirely different rules than standard activities." In commenting on the main takeaway Ron wants readers to get, he says, "Formal rules for creating and reviewing CPM milestones are required to manage milestones in CPM schedules professionally. Proper statusing a milestone should be a paramount consideration, way above that of a standard CPM activity. Many milestones represent a contractual requirement. Since logic is the sole property of a milestone, then every logical relationship to and from a milestone should be well justified. Sadly, statistical evidence from the construction industry shows that milestone logic is regularly violated in practice."
NETL
NSTL
