Jaros, Baum & Bolles

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Jaros, Baum & Bolles (JB&B) is an American MEP (Mechanical, electrical, and plumbing) and building systems engineering firm founded in 1915 by Alfred L. Jaros, Jr. and Albert L. Baum. [1] The firm is best known for high-rise projects, including One World Trade Center [2] and Hudson Yards in New York City, [3] the Sears Tower in Chicago, Penn Station Expansion in New York, [4] and the Bank of China Tower in Hong Kong. [5]

Mechanical, electrical, and plumbing

Mechanical, electrical and plumbing (MEP) refers to these aspects of building design and construction. In commercial buildings, these elements are often designed by a specialized engineering firm. MEP design is important for planning, decision making, accurate documentation, performance- and cost-estimation, construction, and operating/maintaining the resulting facilities.

One World Trade Center Main building of the rebuilt World Trade Center complex in Lower Manhattan, New York City

One World Trade Center is the main building of the rebuilt World Trade Center complex in Lower Manhattan, New York City. One WTC is the tallest building in the United States, the tallest building in the Western Hemisphere, and the sixth-tallest in the world. The supertall structure has the same name as the North Tower of the original World Trade Center, which was destroyed in the terrorist attacks of September 11, 2001. The new skyscraper stands on the northwest corner of the 16-acre (6.5 ha) World Trade Center site, on the site of the original 6 World Trade Center. The building is bounded by West Street to the west, Vesey Street to the north, Fulton Street to the south, and Washington Street to the east.

Hudson Yards (development) Development project in Manhattan, New York

Hudson Yards is a real estate development in the Chelsea and Hudson Yards neighborhoods of Manhattan, New York City. It is the largest private real estate development in the United States by area. Upon completion, 13 of the 16 planned structures on the West Side of Midtown South would sit on a platform built over the West Side Yard, a storage yard for Long Island Rail Road trains. The first of its two phases, opened in 2019, comprises a public green space and eight structures that contain residences, a hotel, office buildings, a mall, and a cultural facility. The second phase, on which construction has not started yet, will include residential space, an office building, and a school.


Jaros, Baum & Bolles (JB&B)
Practice information
Partners Mitchel W. Simpler (Managing Partner), Anthony M. Arbore, Scott E. Frank, Richard M. McFadden, Walter J. Mehl, Jr., Christopher J. Prochner, Mark R. Torre, Brendan P. Weiden,
Founders Alfred Jaros, Albert Baum
Founded 1915
Location Manhattan, New York City
Significant works and honors
Buildings One World Trade Center, Sears Tower, Bank of China Tower (Hong Kong)

Selected projects

Memorial Sloan Kettering Cancer Center Hospital in US, United States

Memorial Sloan Kettering Cancer Center is a cancer treatment and research institution in New York City, founded in 1884 as the New York Cancer Hospital. MSKCC is the largest and oldest private cancer center in the world, and is one of 47 National Cancer Institute-designated Comprehensive Cancer Centers. Its main campus is located at 1275 York Avenue, between 67th and 68th Streets, in Manhattan.

Seagram Building skyscraper in New York City

The Seagram Building is a skyscraper, located at 375 Park Avenue, between 52nd Street and 53rd Street in Midtown Manhattan, New York City. The integral plaza, building, stone faced lobby and distinctive glass and bronze exterior were designed by German-American architect Ludwig Mies van der Rohe. Philip Johnson designed the interior of The Four Seasons and Brasserie restaurants. Kahn & Jacobs were associate architects. Severud Associates were the structural engineering consultants. The Seagram building was completed in 1958.

U.S. Steel Tower architectural structure

U.S. Steel Tower, also known as the Steel Building, or UPMC Building, , is a 64-story, 256.34 m (841.0 ft) skyscraper at 600 Grant Street in downtown Pittsburgh, Pennsylvania 15219. It has with 2,300,000 sq ft (210,000 m2) of leasable space. It is the tallest skyscraper in Pittsburgh, the fifth tallest building in Pennsylvania, the 52nd tallest in the United States, and the 200th+ tallest building in the world. It is the tallest building in the world with a completely flat roof. It held its opening dedication on September 30, 1971.

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World Trade Center site Ground Zero

The World Trade Center site, formerly referred to as "Ground Zero" or "the Pile" immediately after the September 11 attacks, is a 14.6-acre (5.9 ha) area in Lower Manhattan in New York City. The site is bounded by Vesey Street to the north, the West Side Highway to the west, Liberty Street to the south, and Church Street to the east. The Port Authority owns the site's land. The previous World Trade Center complex stood on the site until it was destroyed in the September 11 attacks.

Pennsylvania Station (New York City) train station in New York City

Pennsylvania Station, also known as New York Penn Station or Penn Station, is the main intercity railroad station in New York City and the busiest in the Western Hemisphere, serving more than 630,000 passengers per weekday as of 2018. Penn Station is in Midtown Manhattan, close to Herald Square, the Empire State Building, Koreatown, and Macy's Herald Square. Entirely underground, the station is located in Midtown South beneath Madison Square Garden, between Seventh and Eighth Avenues and between 31st and 33rd Streets, with additional exits to nearby streets.

Kohn Pedersen Fox architectural firm

Kohn Pedersen Fox Associates (KPF) is an American architecture firm which provides architecture, interior, programming and master planning services for clients in both the public and private sectors. KPF is one of the largest architecture firms in the world and is currently one of the largest in New York City, where it is headquartered.

Hudson Yards (neighborhood), Manhattan Neighborhood of Manhattan in New York City

Hudson Yards is a neighborhood on the West Side of Midtown Manhattan, bounded roughly by 30th Street in the south, 43rd Street in the north, the West Side Highway in the west, and Eighth Avenue in the east. The area is the site of a large-scale redevelopment program that is being planned, funded, and constructed under a set of agreements among the State of New York, City of New York, and Metropolitan Transportation Authority (MTA), with the aim of expanding the Midtown Manhattan business district westward to the Hudson River. The program includes a major rezoning of the Far West Side, an extension of the New York City Subway's 7 and <7>​ trains to a new subway station at 34th Street and 11th Avenue, a renovation and expansion of the Javits Center, and a financing plan to fund the various components. The various components are being planned by New York City Department of City Planning and New York City Economic Development Corporation.

HDR, Inc.

HDR is an architectural, engineering, and consulting firm based in Omaha, Nebraska, United States. HDR has worked on projects in all 50 U.S. states and in 60 countries, including notable projects such as the Hoover Dam Bypass, Fort Belvoir Community Hospital, and Roslin Institute building. The firm employs nearly 10,000 professionals and represents hundreds of disciplines in various markets. HDR is the 9th largest employee-owned company in the United States with revenues of over $2.2 billion in 2017. Engineering News-Record ranked HDR as the 6th best engineering firm in the world in 2018, up from 9th place in 2017.

Manhattan West building complex in New York City

Manhattan West is a 5,400,000-square-foot (500,000 m2) mixed-use development by Brookfield Properties, being built as part of the Hudson Yards Redevelopment. The project consists of two large office towers and two smaller residential towers, as well as a 1.5-acre (0.6-hectare) public park. The towers are being built on a platform over Penn Station storage tracks along Ninth Avenue. The buildings are close to the Hudson Yards mega-development to the west across Tenth Avenue. Upon its completion, the taller west tower will extend 995 feet (303 m) up to its roof and will be one of the tallest buildings in New York City.

Simpson Gumpertz & Heger Inc. (SGH) is a privately held ENR 500 engineering firm that designs, investigates, and rehabilitates structures and building enclosures. Their work encompasses commercial, institutional and residential buildings, transportation, water/wastewater, nuclear, science, and defense structure projects throughout the U.S. and over twenty foreign countries. SGH has 600 employees at seven offices in Boston, Chicago, Houston, New York City, San Francisco, Southern California and Washington, D.C.

Robert Siegel Architects is a New York-based architecture firm that designs new buildings, renovations and interiors for a wide range of clients and programs. Their public, academic, cultural, commercial and residential projects are located throughout the United States, Korea, China, and Japan. The firms has a won 30 design awards and has appeared in over 50 publications.

Gateway Program (Northeast Corridor) Planned expansion and renovation of the U.S. Northeast Corridor

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Magnusson Klemencic Associates

Magnusson Klemencic Associates is an American structural and civil engineering consulting firm with its headquarters in Seattle, Washington. The company has completed projects worth more than $73 billion in 47 states and 51 countries. Significant MKA projects through its history include the World Trade Center, the Columbia Center, Aqua, the Doha Convention Center Tower, and the Olympic Sculpture Park.

Pennsylvania Station (1910–1963) former train station in New York City

Pennsylvania Station was a historic railroad station in New York City, named for the Pennsylvania Railroad (PRR), its builder and original tenant. The station occupied an 8-acre (3.2 ha) plot bounded by Seventh and Eighth Avenues and 31st and 33rd Streets in Midtown Manhattan. It was designed by McKim, Mead, and White and completed in 1910. Its head house and train shed were considered a masterpiece of the Beaux-Arts style and one of the great architectural works of New York City. As the terminal shared its name with several stations in other cities, it was sometimes called New York Pennsylvania Station, or Penn Station for short.

10 Hudson Yards office building in Manhattans West Side

10 Hudson Yards, also known as the South Tower, is an office building that was completed in 2016 in Manhattan's West Side. Located near Hell's Kitchen, Chelsea and the Penn Station area, the building is a part of the Hudson Yards urban renewal project, a plan to redevelop the Metropolitan Transportation Authority's West Side Yard. Coach, Inc. is the anchor tenant. During planning, the tower was known as Tower C.

30 Hudson Yards Skyscraper in New York City

30 Hudson Yards is a super-tall mixed use building in the West Side area of Manhattan. Located near Hell's Kitchen, Chelsea, and the Penn Station area, the building is part of the Hudson Yards Redevelopment Project, a plan to redevelop the Metropolitan Transportation Authority's West Side Yard. Since July 2018, it has been the third-tallest building in New York City.

15 Hudson Yards

15 Hudson Yards is a residential building on Manhattan's West Side, completed in 2019. Located in Chelsea near Hell's Kitchen Penn Station area, the building is a part of the Hudson Yards project, a plan to redevelop the Metropolitan Transportation Authority's West Side Yards.

35 Hudson Yards

35 Hudson Yards is a mixed-use building in Manhattan's West Side and is slated to be composed of apartment units and a hotel. Located near Hell's Kitchen, Chelsea, and the Penn Station area, the building is a part of the Hudson Yards project, a plan to redevelop the Metropolitan Transportation Authority's West Side Yards.

50 Hudson Yards proposed building planned as part of the Hudson Yards Redevelopment Project in Hells Kitchen, Manhattan

50 Hudson Yards is a 58-story and 1,011 ft tall building being planned as part of the Hudson Yards Redevelopment Project in Hell's Kitchen, Manhattan. The planned building is to be located to the north of 30 Hudson Yards, and on the east side of the Hudson Park and Boulevard, adjacent to 55 Hudson Yards. It will total 2.9 million square feet of commercial space. Located at the southwest corner of 34th Street and 10th Avenue, it will replace the drive-through McDonald's that had long occupied the space.

55 Hudson Yards

55 Hudson Yards is a skyscraper being built in the neighborhood of Hudson Yards, Manhattan, New York City, just outside the Hudson Yards Redevelopment Project. It and 50 Hudson Yards will add a combined four million square feet (370,000 m2) of space to the Hudson Yards project, even though the two buildings will be located outside the redevelopment site itself.

The Spiral, also known as 66 Hudson Boulevard, is a 65-floor skyscraper under construction in Hudson Yards, Manhattan, New York City. The project was announced in 2016 by real estate developer Tishman Speyer as a 1,005 foot skyscraper with 2.85 million square feet and 65 floors. The tower is being designed by Danish architectural firm Bjarke Ingels Group, which also designed the nearby West 57.


  1. Yeboah, Jennifer (2015-10-08). "5 Ways JB&B is Building NYC's Future". The Hundred Year Association. Retrieved 2017-03-08.
  2. Dunlap, David W. (2010-09-03). "World Trade Center Complex Is Rising Rapidly". The New York Times. ISSN   0362-4331 . Retrieved 2017-03-08.
  3. "Meet Our Team | Hudson Yards". Hudson Yards. 2016-08-24. Retrieved 2017-03-08.
  4. "NY Penn Station Expansion Finally Rolls Into Motion" . Retrieved 2018-01-05.
  5. "Jaros, Baum & Bolles - The Skyscraper Center". skyscrapercenter.com. Retrieved 2017-03-08.