On Demand Webinar

Cumulative Impact 2012: Practical and Legal Considerations for a Successful Claim, Including a Comprehensive Case Law Review (William Ibbs, Ph.D.)

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 Successful recovery of such extra, subtle costs is not guaranteed however, and may very well depend upon the judgment of the deciding board or court. View this CD to learn the ins and outs of this complex issue, including:
  • What constitutes a cumulative impact claim?
  • Cumulative effect on productivity, schedule and cost of numerous changes/RFIs.
  • Disruption, delay and other types of impact costs that may be recoverable.
  • How to document, prepare for, and defend against a cumulative impact claim.
  • Causation, liability and damages: testing the validity of a change request.
  • Standard methods for measuring damages.
  • Different Measured Mile approaches – what works and what doesn’t.
  • Contract modification disclaimers and other road blocks.
  • Case law review of two dozen decisions, with focus on why the cumulative claim was upheld or denied.
  • And much, much more!

Webinar Materials:

In addition to the presentation PowerPoint slides, attendees will receive a recently published article from the ABA Construction Lawyer Fall 2011 Journal.


Who Will Benefit?

This webinar is a must if you’re a public or private owner, construction manager, contractor, subcontractor, scheduler, consultant, architect or engineer involved in construction project management or administration. Register below to gain key insights from our knowledgeable expert on how to recognize, prepare, analyze, resolve, and possibly avoid, cumulative impact claim situations.

Meet Your Presenters:


Professor William Ibbs, Ph.D.
University of California at Berkeley
Ibbs Consulting Group

William Ibbs is professor and group leader of the construction management program in the civil engineering department at the University of California at Berkeley. He teaches both undergraduate and graduate courses in construction management, and is a leading thinker, active researcher and writer on construction management subjects. As a researcher Bill has been active in the Construction Industry Institute (CII) for 25+ years, investigating project change and productivity.

In addition to his academic career Professor Ibbs leads a very active consulting practice, serving as consultant, expert witness and mediator on process, building and infrastructure projects all over the world. He is a recognized expert on the subject of construction management, particularly cumulative impact of changes, schedule delay and disruption, and loss of labor productivity. He and the associates of his firm have also worked and testified on other construction-related issues, such as professional standard of care, personal injury, false claims and loss of business value disputes. Clients include Bechtel, Chevron, Obayashi, the US Navy and various public agencies.

Dr. Ibbs is active in and has received a number of awards from numerous professional organizations, such as AGC, ASCE, the Beavers and PMI. Bill earned B.S. and M.S. degrees from Carnegie Mellon University and a Ph.D. from U.C. Berkeley, all in civil engineering with a construction management emphasis, and minors in business and finance.

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