PDF Files.

Seismic Waves Generated by Aircraft Impacts and Building Collapses at the WTC.
Seismic Observations During the September 11, 2001, Terrorist Attack.
Steel Structure Nonlinear FEA Simulation Provides Insight into World Trade Center Collapse.
Collapse of the World Trade Center Towers.
Elaboration on Aspects of The Postulated Collapse Of the World Trade Center Twin Towers
New Jersey Air National Guard Mission Statement

FEMA World Trade Center Building Performance Study

Table of Contents
Title Page
Executive Summary
Chapter 1 - Introduction
Chapter 2 - The Twin Towers
Chapter 3 - WTC 3
Chapter 4 - WTC 4, 5, and 6
Chapter 5 - World Trade Center Seven
Chapter 6 - Bankers Trust Building
Chapter 7 - Peripheral Buildings
Chapter 8 - Observations, Findings and Recommendations
Appendix A - Overview of Fire Protection in Buildings
Appendix B - Structural Steel and Steel Connections
Appendix C - Limited Metallurgical Examination
Appendix D - WTC Steel Data Collection
Appendix E - Aircraft Information
Appendix F - Structural Engineers Emergency Response Plan
Appendix G - Acknowledgments
Appendix H - Acronyms and Abbreviations
Appendix I - Metric Conversions
Steel Data Collection SpreadSheet from Appendix D

Reports on the Behaviour of Multi-storey Composite Steel Framed Structures in Response to Fires.

Main Report - Behaviour of Steel Framed Structures Under Fire Conditions
Susan Lamont's PhD Thesis - The Behaviour of Multi-storey Composite Steel Framed Structures in Response to Compartment Fires
Martin Gillie's PhD Thesis - The Behaviour of Steel Framed Composite Structures in Fires Conditions
BS/Test 1 : Abaqus model using beam general sections
BS/Test 1 : Abaqus model using FEAST shell elements
BS/Test 1 : ABAQUS grillage model
BS/Test 1 : ABAQUS shell/shell model
BS/Test 1 : ABAQUS beam/grillage model
BS/Test 2 : ABAQUS beam/shell model
BS/Test 3 : Abaqus model using beam general sections
BS/Test 3 : ABAQUS shell/beam model
BS/Test 3 : ABAQUS discontinuous shell/beam model
BS/Test 4 : ABAQUS shell/beam model
Analysis of Results from BS/TEST 1 models: Part A grillage models
Analysis of Results from BS/TEST 1 models: Part B half floor models
Analysis of Results from BS/TEST 1 models: Part C FEAST shell models
Analysis of Results from BS/TEST 3 models: Part A grillage models
Analysis of Results from BS/TEST 3 models: Part B half floor models
Analysis of Results from BS/TEST 1 models: Part B
Analysis of Results from BS/TEST 3 models: Part B
Effect of increasing live load on BS/TEST 1
Effect of changing steel section in the BS/TEST 1
Effect of changing boundary conditions on BS/TEST 1
Effect of changing slab/beam temperature evolution on BS/TEST 1
FEAST modelling of tensile membrane action
Development of of generalised stress-strain relationships for the concrete model in grillage model
Development of of generalised stress-strain relationships for the concrete slab in shell models
Investigation of membrane-flexure interaction in the Cardington slab at elevated temperature
Heat transfer claculations for slab temperatures in BS/TEST 1 and BS/TEST 4
Structural performance of redundant structures under local fires
Fundamental principles of structural behaviour under thermal effects
Study of thermal expansion and bowing in a restrained beam
Application of fundamental structural mechanics principles in assessing the Cardington restrained beam test