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 Engraving and Printing, 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