PERT-path network technique: a new approach to project planning

A new network technique is described, the pert-path network technique (PPNT), for the planning and control of project activities. The approach requires the same information as classical pert-type network techniques do, but it uses it more accurately. A new systemic schematization of the classical pert system is formalized, and the pert-path network is defined. The main properties of the network are discussed. Analytical relationships which allow evaluations of the time domain of each possible trajectory of the pert system and the PPN topology are provided. An algorithm for the computerized implementation of the technique is described. The approach has proved to be of use in outlining potential inconsistencies in the planners' estimates when project-time or project-progress targets are pursued. The analysis of projects by paths may help in the resolution of contractual disputes at the planning stage. A case study using pert and PPNT is provided