Disputes arising from large scale construction projects present a number of unique issues in adjudication and arbitration. While the disputes are varied, the sources of these disputes arise invariably from the same broad group of factors. Among this is the tendency of project team members to be over optimistic in planning and pricing assumptions and to allow potential problems to simmer too long. In this talk an adjudicator and arbitrator shares some of his experiences from a number of matters involving such projects in recent years, in particular the approaches which he considers helpful in the analysis of these disputes.