Expert Witness

Lee Rigby, Daniel Tyler and William Strawn are qualified to perform expert witness services for public, private and residential elevator related cases.

While performing expert witnessing for elevator related cases is not a primary service of Vertical Assessments, we do accept certain cases for either plaintiff or defense. Historically we have provided representation for our clients equally, regardless of their position in the case.

Lee Rigby, President
Vertical Assessment Associates

The former Engineer III for the Bureau of Elevator Safety. Supervised all state elevator inspectors. Serves on the ASME A17.1, Safety Code for Elevators and Escalators, Hydraulic and NIRC Committees. Vice-President of the Elevator Association of Florida.

For access to a complete resume, please call us toll free at 866-896-0401
or send an email with your request

William Strawn, Vice-President
Vertical Assessment Associates

The former Plans Examiner for the Bureau of Elevator Safety. Member of NFPA, which produces fire, electrical & life safety codes. Member of ASME, which produces the elevator safety codes.

For access to a complete resume, please call us toll free at 866-896-0401

or send an email with your request.

Dan Tyler, Expert Witness

Dan Tyler has a BS in mechanical engineering and a MBA in finance and
international business. He is a QEI certified elevator inspector with
nineteen years experience in the elevator industry including
management, elevator design and engineering, project management for new
equipment and alterations, consulting, evaluation, and code compliance
inspections. He has worked for major elevator companies such as Otis,
Westinghouse and Schindler, as well as major elevator consulting firms.

For access to a complete resume, please call us toll free at 866-896-0401

or send an email with your request.

For access to our Expert Witnessing & Trial Research Retainer with hourly rate schedule proposal please call us toll free at 866-896-0401, or send an email with your request.

If you have already obtained a password, you may access our Expert Witness retainer form and CVs here.

Left video clip: Example used in explaining gravity for elevator litigation - in response to claims that passengers in a falling elevator float upwards during decent. As Galileo theorized, and Apollo 15 proved in this video clip, the floating claim is impossible.