DECISION CPM: A METHOD FOR SIMULTANEOUS PLANNING, SCHEDULING AND CONTROL OF PROJECTS.
Management sciences research rept.,
CARNEGIE INST OF TECH PITTSBURGH PA GRADUATE SCHOOL OF INDUSTRIAL ADMINISTRATION
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In the planning phase of the Critical Path Method a project graph is constructed which lists the jobs to be done as well as their technological ordering. Implicit in this process is a series of decisions on the best method of performing each job. The authors show that it is not possible to make these decisions optimally without the use of scheduling information. It is suggested that the planning and scheduling problems be solved simultaneously. A decision project graph is defined, which includes information on alternative methods of performing each job, the time and cost of the alternatives and the interdependencies between alternatives, as well as the usual technological ordering. Integer programming and heuristic solution techniques are developed for the joint problem represented by the decision project graph. Finally implications of the approach for project crashing and project control are discussed. Author