3/12/2023 0 Comments L ambiance plaza collapse![]() Ten days of frantic rescue operations revealed that 28 construction workers had died in the collapse, making it the worst lift-slab construction accident ever. The entire structure collapsed, first the west tower and then the east tower, in 5 s, only 2.5 s longer than it would have taken an object to free fall from that height. Kenneth Shepard, an ironworker who was installing wedges at the time, looked up to see the slab over him ‘cracking like ice breaking.’ Suddenly, the slab fell onto the slab below it, which was unable to support this added weight and fell in turn. “The workers were tack-welding wedges under the 9th-to-11th floor package to temporarily hold them in position, when a loud metallic sound followed by rumbling was heard. In the west tower, the 9th, 10th, and 11th floor slab package was parked in stage IV directly under the 12th floor and roof package… The shear walls were about five levels below the lifted slabs (Cuoco et al. “At the time of the collapse, the building was a little more than halfway completed. Unfortunately, to this day the true cause of the collapse remains in dispute because a settlement ended all investigations. 9.)ĭelatte: “The death of 28 workers in the April 23, 1987, construction collapse of the L’Ambiance Plaza building in Bridgeport, Connecticut, triggered a massive rescue effort and several investigations. A 16-story post-tensioned prestressed concrete lift-slab apartment project collapsed suddenly during construction, resulting in 28 deaths.” (Carper and Feld. “It was Gone: String of Problems Led to 51 Deaths at Willow Island.” 4-27-2008.Ĭarper and Feld: “L’Ambiance Plaza, Bridgeport, Connecticut, April 1987. 28 Exponent Engineering and Scientific Consulting. Beyond Failure: Forensic Case Studies for Civil Engineers.
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