| Contents Notes |
1. Introduction. Purpose and scope of study -- WTC site -- Timeline and event summary -- Response of the engineering community -- Overview of building codes and fire standards -- Report organization -- 2. WTC 1 and WTC 2. Building descriptions -- Building response -- Observations and findings -- 3. WTC 3. Design and construction features -- 1993 attack -- 2001 attacks -- Observations -- 4. WTC 4, 5, and 6. Design and construction features -- Building loads and performance -- Analysis of building performance -- 5. WTC 7. Structural description -- Fire protection systems -- Building loads -- Timeline of events affecting WTC 7 on September 11, 2001 -- Potential collapse mechanism -- 6. Banker Trust Building. Building description -- Structural damage description -- Architectural damage description -- Fireproofing -- Overall assessment -- Analysis -- 7. Peripheral buildings. World Financial Center -- Verizon Building -- 30 West Broadway -- 130 Cedar Street -- 90 West Street -- 45 Park Place -- One Liberty Plaza -- 8. Observations, findings, and recommendations -- A. Overview of fire protection in buildings -- B. Structural steel and steel connections -- C. Limited metallurgical examination -- D. WTC steel data collection -- E. Aircraft information -- F. Structural engineers emergency response plan. Report of a team of civil, structural, and fire protection engineers, deployed by the Federal Emergency Management Agency (FEMA) and the Structural Engineering Institute of the American Society of Civil Engineers (SEI/ASCE), in association with New York City and several other Federal agencies and professional organizations, to study the performance of buildings at the WTC site following the attack of September 11, 2001. |
