Week_03_Lecture_-_WTC_Engineering_Analys

Week_03_Lecture_-_WTC_Engineering_Analys - World Trade...

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1 World Trade Center World Trade Center Building Performance Study Building Performance Study Venkatesh Kodur CEE, MSU Outline Background Investigation/study – BPAT Sequence of events Damage assessment Buildings Infrastructure Rescue and recovery Recommendations Facts – WTC WTC complex: Comprised of seven buildings Owner: Port Authority of New York and New Jersey Architect: Engineer: Contractor: Tishman Construction Company Ground breaking: August 5 th , 1966 Opened: April 4 th , 1973 Destroyed: September 11 th , 2001 Excerpt from TIME magazine Facts – Twin Towers Dimensions: Total area: 12 million square feet 40,000 square feet per floor Height: 110 stories high, 1368 and 1362 feet (417 and 415 metres) Elevators: 239 elevators and 71 escalators Earth work: 1.2 million cubic yards were excavated Facts – Twin Towers Steel: 200,000 tons Concrete: 425,000 cubic yards Windows: 43,600 windows 600,000 square feet of glass Cooling: 60,000 tons of cooling capacity Antenna: 360 feet high Capacity: 50,000 employees Rest rooms: 1200
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2 Manhattan Prior to Attack Manhattan Prior to Attack WTC – Looking Up September 11, 2001 American Airlines Flight 11 Boston to Los Angeles Hit North Tower at 8:45 am United Airlines Flight 175 Boston to Los Angeles Hit South Tower at 9:03 am Excerpt from Reuters The Incident The Incident South Tower – Fire Ball South Tower – Fire Ball South Tower Collapsing People Fleeing People Fleeing
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3 WTC 3 WTC 7 WTC 7 NYC – Post 9-11 NYC Skyline Before Attack…. …and After Attack WTC Disaster WTC Disaster September 11, 2001 Terrorist attack Criminal investigation Law enforcement agencies Buildings and infrastructure – disaster Colossal damage and destruction Building performance / investigation Engineering profession FEMA/ASCE - experts team Building Performance Assessment Team (BPAT) FEMA/ASCE- BPAT FEMA/ASCE- BPAT ASCE FEMA SEI SFPE NFPA CTBUH ACI AISC TMS SEAoNY NCSEA DDC NY ICC Participating Organizations
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4 BPAT Composition 25-member team comprising expertise in: High rise building design – Structural analysis – Blast analysis – Structural collapse investigation – Fire growth/modelling – Fire protection engineering – Steel construction – Metallurgy and fracture mechanics – Failure investigation BPAT – Experts Team BPAT – Experts Team Gene Corley, PhD, SE CTL Edward M. DePaola, PE Severud Associates Robert Duval NFPA Jonathan Barnett, PhD, PE WPI John Fisher, PhD Lehigh University Richard Gewain, PE Hughes Associates Ramon Gilsanz, SE Gilsanz, Murray, Stefick William Baker, PhD, SE Saw-Teen See, PE LERA James Milke, PhD, PE
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This note was uploaded on 02/03/2012 for the course EGR 100 taught by Professor Hinds during the Fall '08 term at Michigan State University.

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Week_03_Lecture_-_WTC_Engineering_Analys - World Trade...

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