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
| Apr 24, 2014
Unbuilt and Famous: LEGO releases box set of Bjarke Ingels' LEGO museum
LEGO Architecture has created a box set that customers can use to build replicas of the LEGO Museum, which is not yet built in real life. The museum, designed by the Bjarke Ingels Group, will commemorate the history of LEGO.
| Apr 23, 2014
Ahead of the crowd: How architects can utilize crowdsourcing for project planning
Advanced methods of data collection, applied both prior to design and after opening, are bringing a new focus to the entire planning process.
| Apr 23, 2014
Developers change gears at Atlantic Yards after high-rise modular proves difficult
At 32 stories, the B2 residential tower at Atlantic Yards has been widely lauded as a bellwether for modular construction. But only five floors have been completed in 18 months.
| Apr 23, 2014
Experimental bot transfers CAD plans onto construction sites
The Archibot is intended to take technical data and translate it into full-scale physical markings on construction sites.
| Apr 23, 2014
Mean and Green: Top 10 green building projects for 2014 [slideshow]
The American Institute of Architects' Committee on the Environment has selected the top ten examples of sustainable architecture and ecological design projects that protect and enhance the environment. Projects range from a project for Portland's homeless to public parks to a LEED Platinum campus center.
| Apr 23, 2014
Architecture Billings Index dips in March
The March ABI score was 48.8, down sharply from a mark of 50.7 in February. This score reflects a decrease in design services.
Sponsored | | Apr 23, 2014
Ridgewood High satisfies privacy, daylight and code requirements with fire rated glass
For a recent renovation of a stairwell and exit corridors at Ridgewood High School in Norridge, Ill., the design team specified SuperLite II-XL 60 in GPX Framing for its optical clarity, storefront-like appearance, and high STC ratings.
| Apr 22, 2014
Transit-friendly apartment building now under construction
The new $44 million community is situated on eight acres, directly adjacent to the local Park-n-Ride, and a quick walk from a nearby light rail station.
| Apr 22, 2014
Bright and bustling: Grimshaw reveals plans for the Istanbul Grand Airport [slideshow]
In partnership with the Nordic Office of Architecture and Haptic Architects, Grimshaw Architects has revealed its plans for the terminal of what will be one of the world's busiest airports. The terminal is expected to serve 150 million passengers per year.
| Apr 21, 2014
10 design-build best practices
Design-build requires more than a good contract and appropriate risk allocation, says the DBIA. Everyone from the owner to the subcontractors must understand the process, the expectations, and fully engage in the collaboration.