LERA
PROJECTS






LOCATION: New York
Agricultural Science and Technology Center, SUNY Cobleskill

Columbia University, Medical Education Building

Javits Lecture Hall Renovation, SUNY Stony Brook

New Academic Building, School of Public Health, SUNY Downstate

NYU School of Medicine Research Lab Relocation

SUNY Upstate Cord Blood Facility

York College, Academic Village and Conference Center

1 World Trade Center, Freedom Tower

Bowers Hall Renovation, State University of New York at Cortland

Colin Powell Hall - City College

Hudson Park and Boulevard

NYU Medical Center, Energy Building

NYU Medical Center, Kimmel Pavilion

NYU Medical Center, Tisch Elevator Tower

PS 216 - Edible Schoolyard

School of Business, State University of New York at Albany

United Nations Capital Master Plan and Infrastructure Upgrade

World Trade Center, Tower 4

Academic Building at John Jay College, City University of New York

Advanced Science Research Center, CUNY City College

Johnson Museum of Art Addition, Cornell University

Kew Gardens Hills Library

Schein Residence

Science Facility, Lehman College

Staten Island Courthouse

SUNY Purchase, Center for Integrated Technology Learning

Albany Convention Center

Graduate Chemistry Building Renovation, SUNY Stony Brook

250 East 49th Street

Academic Science Building 1, Medgar Evers College, City University of New York

Apollo Theater

Battery Park City Parks Conservancy Maintenance Facility

Gateway Center, Westchester Community College

Jacob Javits Convention Center Expansion and Renovation

Learning Spring Elementary School

Mott Haven Campus

New York Historical Society

Sara Delano Roosevelt House at Hunter College, City University of New York

Surrey Hotel Renovation

Union Square North Pavilion

505 West 47th Street

Albert Einstein College of Medicine - Van Etten Building Renovation

Cooper Square Hotel

Cornell University, Ives Hall Renovation, SUNY

Rehabilitation of Husted Hall and Richardson Hall, SUNY Albany

Horizen Hotel

Public Farm One

School of American Ballet

Shelter Island Residence

Buddakan Restaurant

Buffalo Life Sciences Complex

Integrated Sciences Building at SUNY Geneseo

Morimoto

Air Traffic Control Tower and Base Building, Stewart International Airport

Baseball Hall of Fame

Bellevue Hospital Center Ambulatory Care Facility and Inpatient Facility Renovation

Historic Preservation Services for DCAS

Rodale Publishers

AOL Time Warner Centre

New York Hall of Science Addition

Wagner School of Public Service, New York University

47 East 91st Street

7 World Trade Center

AirTrain Terminal at Jamaica Station

Albert Einstein College of Medicine, Comprehensive Opiod Treatment Center

Interim PATH Station

Simon Wiesenthal New York Tolerance Center

Zion Baptist Church

LaGuardia International Airport, Police Emergency Garage

Columbia University, East Campus Master Plan

Grant Street Administration Building

Prada Soho

Youth Teen Center

Gagosian Gallery

JFK International Airport, TWA Terminal and Terminal 5 Condition Surveys

491-495 West Street

Korean Mission

SUNY Binghamton Academic Buildings & Research Greenhouse

PS 166 Modernization

Medical Research Complex, Roswell Park Cancer Institute

Trump International Hotel and Condominiums

AT&T Annex

Rensselaer Polytechnic Institute (RPI)

Marriott Marquis

SONY Building

Uris Library, Cornell University

Lake Placid Fieldhouse

Corning Museum of Glass

Sherman Fairchild Center for the Life Sciences, Columbia University

World Trade Center

Henry Hudson Bridge Maintenance Platform

Security Enhancements


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World Trade Center

New York, NY

First occupied in 1970, in magnitude and complexity and in pioneering advances in the technology of high-rise buildings, this pair of 110-story buildings was unlike anything constructed before. With almost one full acre on each floor, the project had a gross area of 13 million sf (1.2 million sm) or about 19 times the overall site area of 16 acres. Over 200,000 U.S. tons (182,000 metric tons) of structural steel were required.

The twin towers altered the world of high-rise buildings in many ways not associated directly with structural design. Some of the many facets of the structural system included:
• The use of prefabricated multiple column and spandrel wall panels.
• The use of large, prefabricated floor panels, complete with steel deck and in-floor electrification.
• The World Trade Center provided the first comprehensive environmental and wind tunnel study completed in a boundary layer wind tunnel. The first evaluation of the dynamics of a building in the turbulent wind... the very cornerstone of contemporary design for high-rise buildings.
• The first testing of humans to determine their sensitivity to the lateral oscillation of buildings... thus the first development of rational criteria for the dynamic performance of a high-rise building.
• The development of the concept for "Shaftwall", a lightweight fire-rated wall system that now dominates the construction industry.
• The invention, development and the incorporation of visco-elastic damping units to reduce the swaying motion of a tall building.
Client:
Port Authority of New York and New Jersey

Architect:
Minoru Yamasaki Associates

Location:
New York, NY

Gross Floor Area:
13 million sf / 1.2 million sm

Height:
North Tower: 1,378 ft (417 m) South Tower: 1,361 ft (415 m)

Awards:
Outstanding Civil Engineering Achievement, 1971
American Society of Civil Engineers

Honor Award for Engineering Excellence
Consulting Engineers Council of the United States

Grand Award for Engineering Excellence
New York Association of Consulting Engineers