What is PERT in Construction Management?
You’ve probably heard the term PERT before, and in this blog, I’m going to explain it to you in simple terms. But first, a quick warning: PERT isn’t much different from CPM (Critical Path Method). What you’ll get here is an honest view not a sugar-coated one. If you want the truth, stay with me.
What Does PERT Stand For?
PERT stands for Program Evaluation and Review Technique. It was developed in the 1950s by the U.S. Navy to manage large, complex projects specifically the Polaris program. At first glance, it doesn’t look very different from CPM.
In CPM, you:
- Identify your list of activities.
- Assign fixed durations.
- Apply logic ties (finish-to-start, start-to-start, etc.).
- Run a forward and backward pass to determine the critical path.
PERT follows a similar process but adds a layer of probability to task durations.
How PERT Works
Unlike CPM, which uses fixed durations, PERT uses three estimates for each activity:
- Optimistic.
- Most likely.
- Pessimistic.
These estimates allow you to analyze risk and likelihood of completion. Once these are established, you still perform forward and backward passes, identify the critical path, and attempt to manage the project accordingly.
In essence, if we distill it down, PERT is just CPM with a Monte Carlo-style risk analysis overlay.
The Problems With PERT
Despite its theoretical appeal, PERT carries many of the same issues as CPM:
- Still focused on time by deliverable.
- Still creates complicated precedence diagrams.
- Still difficult to view and understand.
- Still increases work in progress beyond capacity.
- Still limits the effective use of buffers and float.
- Still pushes and panics people instead of fostering collaboration.
- Still command-and-control oriented.
- Still overly focused on one single critical path.
- Still created by one person and therefore highly inaccurate.
In short, PERT (like CPM) is a flawed system that often causes more harm than good in construction management.
A Better Alternative
Instead of relying on outdated, overly complex methods like CPM and PERT, Takt planning offers a more collaborative, visual, and effective approach to managing construction projects.
Final Thoughts
So, what is PERT in construction management? At its core, it’s CPM with risk modeling. But the truth is, both methods are among the worst things to happen to the construction industry causing inefficiencies and ineffective project outcomes.
If you want to learn more we have:
-Takt Virtual Training: (Click here)
-Check out our Youtube channel for more info: (Click here)
-Listen to the Elevate Construction podcast: (Click here)
-Check out our training programs and certifications: (Click here)
-The Takt Book: (Click here)
Discover Jason’s Expertise:
Meet Jason Schroeder, the driving force behind Elevate Construction IST. As the company’s owner and principal consultant, he’s dedicated to taking construction to new heights. With a wealth of industry experience, he’s crafted the Field Engineer Boot Camp and Superintendent Boot Camp – intensive training programs engineered to cultivate top-tier leaders capable of steering their teams towards success. Jason’s vision? To expand his training initiatives across the nation, empowering construction firms to soar to unprecedented levels of excellence.
On we go