Investigation of a Failed Concrete Joist System

by Stephen J. Sopko, Associate; Ryan-Biggs Associates, Troy, United States,



Abstract: The failure and distress of concrete joists contained in the promenade roof deck of a one-story, college, lecture hall building initiated an extensive investigation to determine the cause of the failure. Once the cause of failure was determined, a complicated repair method was used to reinforce the failed joists and other areas of the roof prone to a similar type of failure.

Subject Headings: Failure analysis | Structural failures | Joists | Roof failures | Material failures | Roofs | Reinforced concrete | Building codes

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