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Fire Alarm Systems. Federal Building and Fire Safety Investigation of the World Trade Center Disaster (NIST NCSTAR 1-4C) ***DRAFT for Public Comments***



R J. Keough, R A. Grill


This report was prepared to support the investigation of active fire protection systems as part of the National Institute of Standards and Technology (NIST) World Trade Center (WTC) Investigation. The purpose of this report is to document the design, installation, and modifications to the fire detection and alarm system for buildings 1, 2 and 7 of the WTC, including system performance during the September 11, 2001, attack.
National Construction Safety Team Act Reports (NIST NCSTAR) - 1-4
Report Number


World Trade Center, high rise buildings, building collapse, disasters, fire safety, fire investigations, terrorists, terrorism, fire alarm systems, fire protection, smoke detection, voice communication, communication networks, emergency response, bombs (ordnance)
Created September 1, 2005, Updated February 19, 2017