Construction Strategies to Avoid Progressive Collapse (image) National Institute of Standards and Technology (NIST) Share Print E-Mail Caption The Skyline Plaza Apartments in Fairfax County, Va after a 1973 progressive collapse that occured during construction of the 24th floor. The collapse involved the full height of the tower, and falling debris also caused the horizontal progressive collapse of an entire parking garage under construction adjacent to the tower. Fourteen workers were killed, 34 workers were injured. Credit Hai S. Lew/NIST Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.