Post-Construction Modification to Fire Protection and Life Safety Systems of the World Trade Center Towers. Federal Building and Fire Safety Investigation of the World Trade Center Disaster.
Post-Construction Modification to Fire Protection and
Life Safety Systems of the World Trade Center Towers.
Federal Building and Fire Safety Investigation of the
World Trade Center Disaster.
Grill, R. A.; Johnson, D. A.
NIST NCSTAR 1-1H; 109 p. September 2005.
World Trade Center; high rise buildings; building
collapse; disasters; terrorists; terrorism; fire safety;
fire investigations; construction; fire protection; life
safety; compartments; elevators (lifts); fire alarm
systems; fire protection; sprinklers; inspection;
interior finishes; egress; pressurization; venting;
This report was prepared to support the analysis of
building and fire codes and standards of the National
Institute of Standards and Technology World Trade Center
(WTC) Investigation. The purpose of this report is to
document the Port Authority of New York and New Jersey
guidelines for inspection, repair, and modifications to
fire protection and egress systems in WTC 1, 2 and 7.
This includes guidelines governing the inspection and
upgrading of fire alarm and fire suppression systems;
the reapplication of fireproofing; and the upgrading of
elevators, hoistways, and elevator lobbies. This report
also documents repairs and modifications made to the
fire protection and life safety systems on the affected
floors of WTC 1 and WTC2.