Tag Archives: critical path

Lessons Learned: Critical Path Method Scheduling

By: John Dillon

Through experience that spans every major area of construction, we have gained valuable insight on how to best utilize CPM scheduling to effectively manage a construction project—particularly in situations where a project results in a multimillion-dollar dispute.

While some items below may seem trivial, and this is not an all-inclusive list, each is a real issue that could be a significant factor in the ability to properly execute a project, not to mention the ability to efficiently perform a retrospective CPM schedule analysis. The bulleted items are written primarily from a contractor’s vantage point, but they can easily be reconfigured from the owner’s view, with respect to what the contractor should do in terms of its scheduling practices.

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Practical Considerations in Analyzing Concurrent Delays

Concurrent Delay Analysis: Part 5

By: Charles Choyce

While the analytical methods of determining concurrent delay are important, a contractor should prepare contemporaneous updates during the course of the project that correctly and accurately reflect delay events as they occur. Similarly, in its review of contemporaneous updates, an owner should analyze any logic changes, insertion of delay events, and the linking of those events to ensure that they accurately reflect the events that occurred, and communicate with the contractor on these issues. Small adjustments in the schedule can result in significant changes in the delay calculations that may make a delay event compensable, concurrent, or inexcusable. Continue reading Practical Considerations in Analyzing Concurrent Delays

Challenges in Determining Concurrent Delay (Part 1)

Concurrent Delay Analysis: Part 3

By: Charles Choyce

In parts 1 and 2, I discussed the definitions and general standards set forth by the Association for the Advancement of Cost Engineering International (AACEI) Recommended Practice to determine concurrent delay. In this post, I will illustrate challenges confronted in attempting to apply those concepts, which are by their nature very fact intensive.

Let us use as an example a typical office building with concrete foundations and a structural steel superstructure. The baseline schedule provided that the critical path ran through the construction of the foundations, followed by the start of structural steel erection. However, due to delays in resolving structural steel design problems by the owner’s structural engineer, the project’s critical path shifted to the structural steel design. The delay in resolving the design issues delayed by 100 days the fabrication of steel necessary to commence the erection, resulting in the project completion being delayed by 100 days. At the same time, the contractor completed the foundations 20 days later than planned.

Continue reading Challenges in Determining Concurrent Delay (Part 1)