The L'Ambiance Plaza collapse was one of the worst disasters in modern Connecticut history. L'Ambiance Plaza was a 16-story residential project under construction in Bridgeport, Connecticut at the corner of Washington Avenue and Coleman Street. Its partially erect frame completely collapsed on April 23, 1987, killing 28 construction workers. Failure was possibly due to high concrete stresses on the floor slabs by the placement process resulting in cracking ending in a type of punch through failure. Several observers suggested the collapse was preventable and highlighted the deficiencies of the lift slab construction technique. This collapse prompted a major nationwide federal investigation into lift slab construction as well as a temporary moratorium on its use in Connecticut.
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- Zallen, Rubin M.; David B. Peraza (2004). Engineering Considerations for Lift-slab Construction. ASCE Publications (American Society of Civil Engineers - Technical Council on Forensic Engineering). ISBN 0-7844-0705-3.
- Barone, Meg (April 23, 2010). "23 years later, L'Ambiance losses still sting". Connecticut Post. Retrieved May 1, 2013.
- McFadden, Robert D. (April 24, 1987). "28 Feared Dead In A Bridgeport Building Collapse". New York Times. Retrieved May 1, 2013.
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