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(PS-3835) Critical Path Method (CPM) and Project Production Planning (PP): Complimentary or Exclusionary?

Level: Intermediate
TCM Section(s):
7.2. Schedule Planning and Development
7.4. Resource Planning
Venue: 2022 AACE International Conference & Expo

Abstract: The Project Production Institute (PPI) held a webinar in October 2020 titled “Does CPM Scheduling work?” Basic premise was that CPM had failed to deliver projects on schedule.PPI recommends abandoning CPM scheduling and applying production planning (PP) techniques, developed for manufacturing, to construction projects.PPI recommended having only a Level 1 Master Schedule for management reporting.

This is a very bold recommendation by PPI.There is no argument that mega projects (>$1 billion USD) have performed terribly for years on both cost and schedule. CPM has been used to manage most of these project schedules. But is CPM the cause of the failures?

This presentation assesses the merits of both CPM and PPI process to determine:
  • Why has CPM not been effective on mega projects?
  • Can CPM be “fixed”?
  • How can CPM successfully manage large construction projects?
  • Are CPM and PP complimentary or exclusionary?