THE NEW LPS® METRICS – What They Are, Why They Are Needed and Where They Are Used

THE NEW LPS® METRICS – What They Are, Why They Are Needed and Where They Are Used

2020

DOI: https://doi.org/10.60164/i7a9e9i0f

Authors: Digby Christian, Mauricio Pereira

Citation:

Christian, D., & Pereira, M. (2020). THE NEW LPS ® METRICS -What They Are, Why They Are Needed and Where They Are Used. In Lean Construction Journal pp. 119-140.

Abstract:

Based on the interviews that were conducted and the review of academic papers on the subject of the Last Planner System® (LPS® ) the most commonly cited problem is that of connecting the short term Weekly Work Plan (WWP) cycle to the far longer term master milestone schedule. This was found to be a concern during all phases of a project. However, there are projects that have implemented LPS that have focused on this shortcoming and solved for it by introducing new metrics that track the impact of the short term WWP on the long-term phase milestones. The new metrics make this impact visible, and in making it visible it allows the team to learn and create countermeasures on a weekly cycle that creates long term schedule stability. It is the invisibility of the impact of the short term on the long term that lies at the heart of the problem. Specifically, the new metrics are Milestone Variance (MV), Commitment Level (CL) and Percent Required Complete (PRC). Additionally, these new metrics require the introduction of two new terms to LPS® : Required Tasks (RT) and Non-Required Tasks (NRT). More will be said about these new metrics and the new terms in a moment.