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Unlike others, VERTEX provides forensic consulting alongside traditional AEC services which allows for a 360 degree view of your project.

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Since 1995, VERTEX has completed over 90,000 projects.

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VERTEX is looking for talented individuals to join a highly technical team of forensic consultants, design engineers, construction managers, and environmental scientists.

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VERTEX is a multi-discipline firm with global coverage. Our international network of resources enables us to provide multi-national clients with the most qualified local professionals who understand the culture, language, and regulatory framework.

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Call us at 888.298.5162.

James GranstraPSP, PMP

Executive Vice President, Forensics

James helps companies and their legal counsel avoid and/or resolve business disputes. James is experienced in critical path method (“CPM”) delay analysis and analysis of economic damages in the construction and government contract industries. He has analyzed contractor and owner claims arising from delays, productivity loss, disruption, force majeure events, and environmental impacts. He has also assisted in the creation of documentation of project delays and cost overruns. He has assisted in the preparation of settlement presentations, expert reports, and subsequent expert testimony in state and federal courts, as well as United States and international arbitrations.

James has also assisted owners and general contractors with the oversight of ongoing construction projects. He has reviewed and participated in baseline schedules development, periodic schedule updates, and delay fragments for on-going projects. James has produced project schedule updates, periodic project reports, and correspondence.

Prior to consulting, James held a variety of on-site project management positions at Kiewit Corporation. James’ project controls responsibilities included maintenance of project CPM schedules, estimation and negotiation change orders, analysis of labor trends and variances, and forecasting project costs. James’ construction management experience included subcontractor management, material procurement, and field supervision.

Education & Certification

Master of Business Administration – University of Texas at Dallas

B.S. Construction Management – Magna Cum Laude – Western Illinois University

Planning & Scheduling Professional (PSP)

Project Management Professional (PMP)


American Bar Association (ABA)

Association for the Advancement of Cost Engineering (AACE International)

Construction Leadership Council – AGC, Society of Construction Law North America