Why so many poor schedules?
Schedule logic is not the issue, what makes our schedule models so poor is how we deal with resources. Without resources nothing is done. Schedules that do not take into account all resource constraints are incomplete and most probably wrong.
We favor simplicity over substance and give the project manager very poor schedules he must manually adjust as soon as he realized the plan is no good.
Aegis Project Controls’ primary purpose is to support project management teams in their efforts to minimize the duration, risk and cost associated with their projects. While critical Path Method schedules are widely recognized for their ability to manage time on a project, they are often under-utilized as a cost-reduction tool.
"CPM Scheduling Driving Through Retained Logic" by Zoltan Palffy Jr.
Abstract:
The central focus of construction project schedules is invariably on the build-out trajectory, or more specifically, the builder’s work and responsibilities. Despite design deliverables residing squarely within the critical path, they are seldom adequately represented in pre-construction schedules.
Stakeholders struggle mightily with the definition of the terms
CPM Scheduling for Construction: Best Practices and Guidelines
Edited by: Christopher Carson, PMP, PSP, DRMP; Peter Oakander and Craig Relyea