Benjamin Irwin

About Benjamin Irwin

With dual degrees in architecture and civil engineering from Lehigh University, and over 26 years of diverse professional experience, I provide a wide array of engineering, design, construction, and safety consulting and expert witness litigation support services- Registered Professional Engineer in 27 USA jurisdictions (P.E.) and one Canadian jurisdiction (P.Eng.)- Model Law Engineer (MLE) designated by National Council of Examiners for Engineering and Surveying (NCEES)- Board-certified Senior Member of the National Academy of Forensic Engineers (NAFE), holding the designation of Diplomate Forensic Engineer (DFE). I have been qualified for, and testified within, both state and Federal courts, with retentions from both plaintiffs and defendants.

Experience

1. AVP - Engineering Principal Forensic Engineer

   Haag, a Salas O'Brien Company

   Jan 2026 — Present · Philadelphia, PA, US

   Haag, a Salas O\'Brien Company, is a multi-faceted forensic engineering and technical consulting company, with global, multi-disciplinary reach. For over 100 years, Haag\'s purpose has been to find and communicate the facts. With their reputation for scientific rigor, precision, and clarity, Haag engineering and consulting professionals have become a vital resource for trusted clients including museums, corporations, manufacturers, contractors, engineers, architects, insurers, attorneys, private companies, and individuals. Haag has built a reputation for quality and excellence, and we are proud to continue that tradition today.Haag routinely performs integrated forensic architecture, engineering, meteorology, and data analytics and visualization services (DAVS) consulting, as well as building consulting, construction consulting, and litigation support, applying facts and science to answer technical questions, using simple and intuitive visuals. Our team-based approach allows for flexibility to handle cause and origin determinations, onsite damage assessments, liability allocation analysis, large/complex loss consulting, clerk of the works, and restoration consulting, inclusive of remediation scopes of work, cost estimates, and construction management consulting. Our regional teams deploy advanced technologies, including laser scanning, 3D immersive environments, and Geographic Information Systems (GIS) for mass data acquisition and analysis, across a wide array of technical applications, including for trial testimony demonstratives and animations.Haag Research & Testing also continues its legacy as an IAS Accredited, state-of-the-art laboratory, which specializes in product and material testing services, including desaturation, along with hail impact, pressure chamber, and wind machine testing. Haag Education also continues to provide industry-trusted training, publications, and tools, along with live and online seminars, and certification programs.

Education

• Lehigh University

  Bachelor of Science, Civil Engineering with Structural Engineering Emphasis

  1993 — 1998

• Lehigh University

  Bachelor of Arts, Architecture

  1993 — 1998