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
| Oct 15, 2013
High-rise Art Deco courthouse gets a makeover in Amarillo, Texas
Recognized as one of the most significant Art Deco courthouses in Texas, the Potter County Courthouse is modernized and restored to its 1930s aesthetic.
| Oct 10, 2013
Behind the scenes at the U40 Summit: See the $5,000 U40 Vision competition in progress [slideshow]
Sixty-five up-and-coming AEC leaders are battling for $5,000 in prizes today at BD+C's Under 40 Leadership Summit in San Francisco.
| Oct 10, 2013
Arthur Gensler to architects: Don't give away your ideas
The founder of Gensler advises dozens of up-and-coming AEC professionals at BD+C's Under 40 Leadership Summit in San Francisco.
| Oct 9, 2013
From power plant to office: Ambler Boiler House conversion
The shell of a 19th-century industrial plant is converted into three levels of modern office space.
| Oct 7, 2013
10 award-winning metal building projects
The FDNY Fireboat Firehouse in New York and the Cirrus Logic Building in Austin, Texas, are among nine projects named winners of the 2013 Chairman’s Award by the Metal Construction Association for outstanding design and construction.
| Oct 7, 2013
Progressive steel joist and metal decking design [AIA course]
This three-part course takes a building owner’s perspective on the range of cost and performance improvements that are possible when using a more design-analytical and collaborative approach to steel joist and metal decking construction.
Sponsored | | Oct 7, 2013
Bridging the digital divide between the BIM haves and have nots
There's no doubt that BIM is the future of design. But for many firms, finding a bridge to access rich model data and share it with those typically left on the sidelines can be the difference between winning a bid or not.
| Oct 7, 2013
How to streamline your operations
The average U.S. office worker generates two pounds of paper each day, according to the EPA. Ninety percent of that trash is made up of printed materials: marketing reports, project drafts, copy machine mistakes, and unwanted mail. Here are a few ways AEC firms can streamline their management processes.
| Oct 7, 2013
Reimagining the metal shipping container
With origins tracing back to the mid-1950s, the modern metal shipping container continues to serve as a secure, practical vessel for transporting valuable materials. However, these reusable steel boxes have recently garnered considerable attention from architects and constructors as attractive building materials.
| Oct 4, 2013
Sydney to get world's tallest 'living' façade
The One Central Park Tower development consists of two, 380-foot-tall towers covered in a series of living walls and vertical gardens that will extend the full height of the buildings.