11:20 AM - 12:20 PM
15 September 2020

Atlanta Botanical Gardens Walkway Collapse Investigation

On December 19, 2008 a large portion of the S-shaped, steel-framed walkway under construction at the Atlanta Botanical Gardens suddenly foot-long canopy bridge was designed as a cable-stayed structure. At the time of collapse, temporary shoring tower frames and helical piles supported the walkway framing system. This case-study presentation highlights the importance of understanding movement and structural behavior in permanent design, temporary design, and collapse investigation.


  • Anthony Puntin, PE, M.ASCE, President/Owner, Puntin Engineering, Inc.


  • Daniel R. Cook, P.E., S.E., M.ASCE., Simpson Gumpertz & Heger