TITLE: Scale Modeling of the 96th Floor of World Trade Center Tower 1
J. Perf. Constr. Fac., Volume 21, Issue 6, pp. 414-421 (November/December 2007)
James Quintiere, Professor, Dept. of Fire Protection Engineering,
Univ. of Maryland, College Park, MD 20742. E-mail:
jimq@eng.umd.edu
ABSTRACT: This paper presents an experimental investigation of the
World Trade Center Tower 1 (WTC1) collapse using a 1/20-scale
model. The WTC1 fire on the 96th floor is reconstructed on a small
scale, and structural members including the floor trusses and the
exterior wall subsystem are built and tested under scaled fire
load. Scaling rules are used to determine the values of the
insulating material on the structural systems. This experimental
study demonstrates the use of scaled models to investigate a
real-world fire disaster. Results from the experimental
investigation are compared to analytical results and visual evidence
compiled in the National Institute of Standards and Technology
report on the investigation of the collapse of WTC towers. This
study helps engineers and researchers better understand the fire
behavior and the associated structural response in WTC1, and a more
solidly grounded collapse hypothesis can therefore pursued.