Failure of Long-Span Cable-Supported Timber Pedestrian Bridges

Event Date: October 20, 2020
Time: 4:30 pm
Priority: No
College Calendar: Show

Randall W. Poston, PhD, PE, SE, NAE
Neil Armstrong Distinguished Visiting Fellow
Purdue University College of Engineering

On November 13, 2014, during construction a pedestrian bridge on the Wake Tech Community College campus in Raleigh, North Carolina collapsed killing one worker and injuring four others. During the early morning of November 14, 2015, a twin pedestrian bridge failed even though there was no construction activity occurring. This presentation will detail the design concepts of the twin pedestrian bridges, the post-collapse failure investigation, the structural analysis of the bridges and selected connection components, and will present the probable cause(s) of the bridge failures and other conclusions from the investigation.