I have 34 years of experience in the field of construction, with specific knowledge in the areas of project management standards, delay, disruption and loss of efficiency and changed conditions. I have published on such topics as using critical path method (CPM) scheduling in delay analysis, megaproject claims, changes and dispute resolution and calculating loss of efficiency claims. I have testified 10 times on topics such as spearin issues, delays, time extension analysis, loss of productivity, multiple mobilizations and industry standards for conduct of construction project management.