Syska Hennessy
# Syska Hennessy

Syska Hennessy is a global consulting, engineering and commissioning firm for the built environment. Established in 1928, Syska Hennessy was ranked the 161st-largest U.S. design firm by Engineering-News Record in 2022. The firm has over 500 employees with 20 offices worldwide, including 18 U.S. locations as well as Shanghai, China, and Dubai, UAE. Consulting-Specifying Engineer magazine placed Syska Hennessy 19th overall in its 2022 MEP Giants list, with gross revenue over $110 million. More than 90% of its revenue is derived from mechanical, electrical, and plumbing engineering services, according to the CSE ranking report, Building Design + Construction magazine ranked Syska Hennessy15th in its 2022 list of top building engineering firms.

## History

Syska Hennessy was founded in 1928, by two mechanical engineers, Adolph G. Syska and John F. Hennessy. Originally established in New York City as Syska & Hennessy Engineers, the firm was among the earliest to specialize in the mechanical and electrical systems at the heart of high-rise structures.

1930s

* US Post Office Building, Washington, DC
* Frick Collection, New York
* LaGuardia Airport, New York
* 1939 World’s Fair, New York

1940s

* United Nations Headquarters, New York
* Todd Shipyards, New York, New Jersey, Louisiana, Maine

1950s

* West Point, New York
* US Air Force Academy, Colorado
* Columbia University, New York
* New York University Medical School, New York
* Massachusetts Institute of Technology, Massachusetts

1960s

* Lincoln Center, New York
* Rockefeller Center, New York
* John F. Kennedy Center for the Performing Arts, Washington, DC
* National Gallery of Art, Washington, DC
* Madison Square Gardens, New York
* JFK Airport, New York
* Bureau of Printing and Engraving, Washington, DC
* New Jersey College of Medicine
* Procter & Gamble Headquarters - Cincinnati, Ohio
* Mount Sinai Hospital - Annemberg Tower, Manhattan, New York
* New York University, New York

1970s

* National University of Iran, Tehran
* King Saud University, Saudi Arabia
* Monterey Bay Aquarium, California
* IBM, Bordeaux, France

1980s

* Harvard University, Massachusetts
* Boston Museum of Fine Arts, Massachusetts
* New York City Convention Center, New York
* Los Angeles International Airport, California
* Disney World, Florida

1990s

* Amgen*Bristol-Myers Squibb
* Bank of America, Nationwide
* Sony Pictures Studios, California
* Paramount Pictures, California
* Reagan National Airport, Washington, DC

## Notable projects

* Cooper Union Academic Center
* U.S. Environmental Protection Agency Region 8 Headquarters
* Maricopa County - New High-Rise Court Tower
* 2000 Avenue of the Stars
* Nokia Corporate Headquarters
* Red Bull Headquarters
* New York Presbyterian, Milstein Heart Hospital
* Dulles International Airport Automated People Movers; East Z-Gates Concourse
* Chennai International Airport
* Haeundae Udong Hyundai I'Park Development
* King Saud University
* Dubai International Airport
* California Academy of Sciences
* Indianapolis International Airport, Midfield Terminal
* KAPSARC
* Busan Lotte World Tower
* Lotte Jamsil
