Jim Wiethorn

jim wiethorn

B.S. Architectural Engineering 1973, M.S. Architectural Engineering 1975, Ph.D. Civil Engineering 2018
Principal Engineer and Chairman, Haag Engineering Co.

Jim D. Wiethorn is a principal engineer and chairman of Haag Engineering Co. with over 31 years of experience dealing with damage and failure analysis. 

Wiethorn earned his bachelor’s and master’s degrees in architectural engineering from The University of Texas at Austin in 1973 and 1975. He also earned a bachelor’s degree in math and physics from Baylor University in 1973. At this year's Commencement Ceremony, Wiethorn will be receiving his Ph.D. in civil engineering from UT Austin.

A third-generation general contractor, Wiethorn specializes in construction-related accidents, product design and operational issues, particularly dealing with crane operations. He has completed over 1,000 crane-related accident evaluations including but not limited to production, general and critical lifts; American Society of Mechanical Engineers (ASME)/Occupational Safety and Health compliance of parties involved in lifts and operations; lift planning and design; crane safety programs; wind effects and analysis of mobile and tower cranes; pile driving systems, operations and design; heavy equipment operations; and numerous other crane-related issues.

Wiethorn is a member of several ASME committees, including B30 Safety Standards for Cableways, Cranes, Derricks, Hoists, Hooks, Jacks and Slings, B30.3 Tower Cranes and B30.29 Self-Erect Tower Cranes. He also serves on the National Commission for the Certification of Crane Operators’ Tower Crane Committee and Rigging Task Force Committee. In 2014, he published “Crane Accidents: A Study of Causes & Trends to Create a Safer Work Environment, 1983-2013,” which studied details from the findings of over 500 forensically analyzed crane accidents. 

Wiethorn serves on the Engineering Advisory Board in the Cockrell School of Engineering and on the Board of Advocates in the College of Engineering and Computer Science at Baylor University. In 2008, the Cockrell School’s Department of Civil, Architectural and Environmental Engineering elected Wiethorn to its Academy of Distinguished Alumni.

Wiethorn lives with his wife, Majane Martin, in Sugar Land, Texas, and has six children – Kimberly, Kelli, Elizabeth, Tanner, Rebecca and Breanna.