Forensic Mechanical Engineer  ·  Expert Witness  ·  Jefferson City, TN

NFPA 54 Technical Committee Member | Board Certified — NAFE | Licensed in 32 states | Plaintiff & defense

Roger W. Griffith, P.E. provides forensic engineering investigations, litigation support, and expert witness testimony in cases related to mechanical/plumbing/piping system design, hot water systems/scalding, carbon monoxide poisoning, gas appliance venting, fuel gas fires & explosions, legionella outbreaks, and failures involving mechanical/plumbing/sprinkler systems. He represents plaintiffs and defendants and has provided testimony at depositions, arbitration hearings, and trials.

Roger W. Griffith, P.E., provides independent forensic engineering analysis and expert witness testimony in cases involving building mechanical systems, with particular expertise and experience in carbon monoxide exposure, fuel gas leaks and explosions, and hot water scalding. He has been retained in over 175 investigations and has provided sworn testimony in state and federal courts for both plaintiff and defense counsel. Mr. Griffith is a licensed Professional Engineer with multi-state licensure.

His opinions are developed through a repeatable, standards-based forensic engineering methodology consistent with accepted professional engineering practice, including interpreting applicable codes and standards and analyzing real-world system performance. Mr. Griffith is an active member of the NFPA 54 National Fuel Gas Code Technical Committee, where he contributes directly to the development and revision of the national standards that govern fuel gas systems, combustion appliances, and venting — the very standards at issue in many of the cases in which he is retained.

AT A GLANCE

175+ Forensic investigations

30+ Sworn testimonies

32 States licensed

40+ Years of experience

Practice Areas

Carbon Monoxide Exposure: Residential, commercial, and industrial CO exposure investigations. Gas appliance, venting, and exhaust failures. Combustion air deficiencies and backdrafting analysis. Mr. Griffith is an active member of the NFPA 54 Technical Committee, which governs the fuel gas and appliance standards central to CO exposure cases.

Fuel Gas Leaks, Fires & Explosions: Natural gas and propane leaks, fires, and explosions. Fuel gas piping design, installation, testing, and purging failures.

Hot Water Scalding: Forensic analysis of domestic hot water system failures and scald injury cases. Healthcare, multi-family, and residential matters. Mr. Griffith has served on the ASPE Technical Standard 15 committee on hot water temperature and control, as well as the ASSE Scald Awareness Task Group.

Gas Appliance Performance & Venting: Appliance installation, performance, and venting system failures. Combustion air analysis. Applicable to both CO exposure and fuel gas cases.

Building Mechanical System Failures: HVAC and plumbing system design, installation, and operational failures. Sprinkler system failures. Applicable to premises liability and professional negligence matters.

WHY RETAIN ROGER

Active standards developer, not just a standards interpreter. As a sitting member of the NFPA 54 National Fuel Gas Code Technical Committee, Mr. Griffith contributes directly to the development of the national standards governing fuel gas systems and combustion appliances. Most experts cite NFPA 54. Mr. Griffith helps write it.

Methodology built for Daubert scrutiny. His forensic opinions are developed using documented, repeatable, standards-based methodology consistent with professional engineering practice — designed to withstand Rule 702 and Daubert challenges.

Independent — plaintiff and defense. Mr. Griffith is retained by both plaintiff and defense counsel in state and federal courts. His opinions follow the evidence, not the retaining party.

Broad geographic reach. Licensed as a Professional Engineer in 32 states, covering the majority of U.S. federal circuits. View the full state list.

Depth of testimony experience. Over 175 forensic investigations. More than 30 sworn testimonies at deposition, trial, and arbitration. Product liability, premises liability, and professional negligence matters.

CALL TO ACTION

Contact for Case Evaluation (865) 471-8142 · (865) 850-0322 mobile · RGriffith@GriffithEngineering.net

Available for case review, deposition preparation, and trial testimony in state and federal courts nationally.