Forensic Engineering Analysis of Fatal Overhead Crane Accident




Overhead crane, 3D high definition scanning, drone video imaging technology, 3D modeling and matchmoving, visualization, safety, OSHA, ANSI, forensic engineering, Denver


This paper outlines the forensic procedure and techniques used in the reconstruction and safety assessment of a fatal overhead crane accident. The decedent (a subcontractor) was working as a pipe fitter at a manufacturing plant. At the time of the accident, the decedent had climbed up onto an overhead crane rail to move existing pipework when the crane struck and killed him. This paper presents the application of various techniques/methodologies to reconstruct the complex accident, including 3D HD scanning, drone video imaging, and 3D modeling/principles of photogrammetry to understand how the incident occurred and provide visualizations of the construction project. Safety analysis was conducted by analyzing crane maintenance and operation as well as the duties/responsibilities of the different employers and comparing industrial standards and practices such as OSHA, ANSI, and safety principles.


G. Wickert, “Understanding Comparative Fault, Contributory Negligence, and Joint and Several Liability”, Matthiesen, Wickert & Lehrer S.C., 2013. [Online]. Available: [Accessed: 07- Jun- 2019].

Overhead and Gantry Cranes, ANSI B30.2. 2011.

K. Breen and C. Anderson, “The Application of Photogrammetry to Accident Reconstruction,” SAE Technical Paper Series, 1986, Paper no. 861422.

M. Callahan, B. LeBlanc, R. Vreeland, and G. Bretting. “Close-Range Photogrammetry with Laser Scan Point Clouds,” SAE Technical Paper Series, 2012, Paper no. 2012-01-0607.

C. Coleman, D. Tandy, J Colborn, and N. Ault, “Applying Camera Matching Methods to Laser Scanned Three Dimensional Scene Data with Comparisons to Other Methods,” SAE Technical Paper Series, 2015, Paper no. 2015-01-1416.

S. Fenton and R. Kerr, “Accident Scene Diagramming Using New Photogrammetric Technique,” SAE Technical Paper Series, 1997, Paper no. 970944.

R. Ziernicki and D. Danaher, “Forensic Engineering Use of Computer Animations and Graphics.” Journal of the National Academy of Forensic Engineers, Vol. 23, No. 2, pp. 1-9. Dec. 2006.

D. Danaher and R. Ziernicki, “Forensic Engineering Evaluation of Physical Evidence in Accident Reconstruction,” Journal of the National Academy of Forensic Engineers, Vol. 24, No. 2, Dec., pp. 1-10, 2007.

Code of Federal Regulations Title 29 Part 1910 Section 179 (29CFR1910.178), Overhead and gantry cranes.

“Family of man killed in plant conversion settles for $4.7M – $4.7 Million Settlement”, Virginia Lawyers Weekly, 2019. [Online]. Available: [Accessed: 20- Jun- 2019].




How to Cite

Ziernicki, Richard, and Ricky Nguyen. 2021. “Forensic Engineering Analysis of Fatal Overhead Crane Accident”. Journal of the National Academy of Forensic Engineers 37 (1).