Recent advancements in structural design, combined with the loosening of density and zoning requirements, has opened the door for the so-called "superslim skyscraper."
From New York to Melbourne to Vancouver, developers are planning high-rise structures on postage-stamp-sized parcels (OK, not that small, but we're talking lots as narrow as 22 feet) in dense urban locations.
Developers love the building type because they can finally take advantage of land that was previously unusable for large multifamily and mixed-use structures.
Some projects, like the Beach & Howe Tower in Vancouver (see No. 2 below), utilize a narrow form to accommodate multiple structures on a given site.
To be considered "superthin" or "slender," a tower must have a height-to-width ratio of at least 10:1. A typical skyscraper, such as the Willis Tower, falls in the 7:1 range. The new crop of skinny towers blows those ratios out of the water. For example, the 111 West 57th Street project in New York City has a height-to-width ratio of 22.5:1.
Here's a quick look at some prominent skinny skyscraper projects in the works:
1. 111 West 57th Street, New York
Building Type: multifamily (100 units)
Height: 1,350 feet, 77 fours
Width: 60 feet
Building Team
Developer: JDS Development
Architect: SHoP Architects
Structural engineer: WSP Cantor Seinuk
More on 111 West 57th Street via CTBUH's Skyscraper Center
2. Beach & Howe Tower, Vancouver
Building Type: multifamily (407 units)
Height: 493 feet, 49 floors
Width: NA
Building Team
Developer: Westbank Corp.
Architects: Bjarke Ingels Group (BIG), James KM Cheng Architects
Structural engineer: Glotman Simpson Group
MEP engineer: Cobalt Engineering
More on the Beach & Howe Tower via CTBUH's Skyscraper Center
3. Phoenix Apartments, Melbourne, Australia
Building Type: multifamily (28 units)
Height: 290 feet, 29 floors
Width: 21 feet, 11 inches
Building Team
Developer: Equiset
Architect: Fender Katsalidis Architects
More on the Phoenix Apartments via Sidney Morning Herald
4. One57, New York
Building Type: mixed use, with hotel (210 rooms) and multifamily (92 units)
Height: 1,005 feet, 79 floors
Width: NA
Building Team
Developer: Extell Development Company
Design architect: Christian de Portzamparc
Executive architect: SLCE Architect LLP
Structural engineer: WSP Cantor Seinuk
MEP engineer: AKF Engineers
Exterior performance consultant: Israel Berger Associates
Interior designers: Yabu Pushelberg (hotel), Thomas Juul-Hansen, LLC (residential)
Contractor: Bovis Lend Lease
More on One57 via CTBUH's Skyscraper Center
5. 464 Collins Street, Melbourne
Building Type: mixed use, with multifamily (37 floors, 185 units) and office (13 floors)
Height: 593 feet, 50 floors
Width: 36 feet, 1 inch
Building Team
Developer: Equiset
Architect: Bates Smart
More on 464 Collins Street via Urban Melbourne
6. 432 Park Avenue, New York
Building type: multifamily (125 units)
Height: 1,397 feet, 85 floors
Width: 50 feet
Building Team
Developers: CIM Group, Macklowe Properties
Architects: Rafael Vinoly Architects, SLCE Architects
Structural engineer: WSP Cantor Seinuk
MEP engineer: WSP Flack + Kurtz
Contractor: Bovis Lend Lease
More on 432 Park Avenue via CTBUH's Skyscraper Center
7. 54 Clarke Street, Melbourne
Building Type: multifamily (256 units)
Height: 787 feet, 73 floors
Width: 39 feet, 4 inches
Building Team
Developer: Matrix & Cube
Architect: BKK Architects
Structural engineer: Macleod Consulting
Related Stories
Smart Buildings | Jun 8, 2014
Big Data: How one city took control of its facility assets with data
Over the past few years, Buffalo has developed a cutting-edge facility management program to ensure it's utilizing its facilities and operations as efficiently, effectively, and sustainably as possible.
| Jun 6, 2014
Must see: Can a floating city offset urban population growth in China?
AT Design Office has proposed a design for a floating city to offset increasing urban populations in China. To create the new city, a 10-square kilometer island would be made out of prefab blocks.
| Jun 6, 2014
KPF, Kevin Roche unveil design for 51-story Hudson Yards tower in NYC [slideshow]
Related Companies and Oxford Properties Group are teaming to develop Fifty Five Hudson Yards, the latest addition to the commercial office tower collection in the 28-acre Hudson Yards development—the largest private real estate development in the history of the U.S.
| Jun 6, 2014
Shipping container ship terminal completed in Spain
In Seville, Spain, architectural firms Hombre de Piedra and Buró4 have designed and completed a cruise ship terminal out of used shipping containers.
| Jun 5, 2014
International Parking Institute names best new parking structures
Winners include garages that are architectural delights, an airport's canopied parking atrium, and an environmentally friendly garage under America's oldest park.
| Jun 4, 2014
Emerging trends in healthcare development: neighborhood care, mixed-use models on the rise
In urban and even suburban markets, real estate is about the "live, work, play," with close proximity to mass transit and other amenities, like retail stores. Healthcare organizations are following suit.
| Jun 4, 2014
Want to design a Guggenheim? Foundation launches open competition for proposed Helsinki museum
This is the first time the Guggenheim Foundation has sought a design through an open competition. Anonymous submissions for stage one of the competition are due September 10, 2014.
| Jun 4, 2014
Market update: A difficult first quarter for construction spending comes to an end
This year's unusually difficult winter took its toll on construction activity. Nonetheless, first quarter spending for all the major groups was up compared to the same period in 2013.
| Jun 4, 2014
Construction team named for Atlanta Braves ballpark
A joint venture between Barton Malow, Brasfield & Gorrie, Mortenson Construction, and New South Construction will build the Atlanta Braves ballpark, which is scheduled to open in early 2017. Check out the latest renderings of the plan.
| Jun 3, 2014
Must see: World's tallest LEGO tower built in Budapest
The tower, built in front of St. Stephen's Basilica, is topped with a Rubik's cube and was built using thousands of blocks.