1. WORLD TRADE CENTER Dennis Boothe Jesse Hindle

2. History of the WTC Designed by Minoru Yamasaki Engineer: Leslie Robertson Officially opened in 1973 Owned by the Port Authority of NY & NJ Cost: ~$1.5 billion

3. Purpose of WTC Design Aim: Revitalize Downtown Manhattan through providing a single location for international commerce -12 million sq. feet of office space (40,000 sq. ft per floor)

4. Response to WTC Design Small businesses displaced, creating dissent Local Real Estate Agencies – too much office space offered Critics: - ‘ Purposeless gigantism & technological exhibitionism ’ - ‘ Repetitive architecture can put you to sleep ’

5. Construction of the WTC Used the slurry trench method

6. Construction of the WTC Tube Building - Core and Exterior wall instead of columns throughout

7. 9/11 Attacks – Reasons for Failure Plane impact was not the main reason for collapse Engine fuel caused temperatures of over 1500 degrees F, weakening the structure.

8. Failure of Perimeter Columns Structural integrity of WTC depends on closely space columns around perimeter Steel strength fell as exposed to heat -> columns deflections increased, causing buckling of walls

9. 1 st Runner up – New WTC THINK Team -Rafael Vinoly & Frederic Schwartz -Two towers made of decorative steel towers -light and elegant design

10. New WTC Designs Design by Daniel Libeskind Main features: - 1,776 ft ‘ Freedom Tower ’ - WTC Memorial Museum - ‘ Wedge of Light ’