The Pentagon Report

by Paul E. Mlakar, P.E., Technical Director; U.S. Army Corps of Engineers,
Donald O. Dusenberry, P.E., Principal; Simpson Gumpertz & Heger, Inc.,
James R. Harris, P.E., Principal; J.R. Harris & Company,
Gerald Haynes, P.E., Fire Protection Engineer; Bureau of Alcohol, Tobacco, and Firearms,
Long T. Phan, P.E., Research Structural Engineer; National Institute of Standards and Technology,
Mete A. Sozen, P.E., Kettelhut Distinguished Professor of Structural Engineering; Purdue University,

Serial Information: Civil Engineering—ASCE, 2003, Vol. 73, Issue 2, Pg. 42-55

Document Type: Feature article


The findings of the building performance study conducted following the September 11, 2001, terrorist attack on the Pentagon have far-reaching implications for the engineering and building professions, and for the general public as well. The building performance study team recommends that the features of the Pentagon's design that contributed to its resiliency in the crash—that is, continuity, redundancy, and energy-absorbing capacity—be incorporated in the future into the design of buildings and other structures in which resistance to progressive collapse is deemed important.

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