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
| Aug 11, 2010
PCA partners with MIT on concrete research center
MIT today announced the creation of the Concrete Sustainability Hub, a research center established at MIT in collaboration with the Portland Cement Association (PCA) and Ready Mixed Concrete (RMC) Research & Education Foundation.
| Aug 11, 2010
Study explains the financial value of green commercial buildings
Green building may be booming, especially in the Northwest, but the claims made for high-performance buildings have been slow to gain traction in the financial community. Appraisers, lenders, investors and brokers have found it difficult to confirm the value of high-performance green features and related savings. A new study of office buildings identifies how high-performance green features and systems can increase the value of commercial buildings.
| Aug 11, 2010
Architecture Billings Index flat in May, according to AIA
After a slight decline in April, the Architecture Billings Index was up a tenth of a point to 42.9 in May. As a leading economic indicator of construction activity, the ABI reflects the approximate nine to twelve month lag time between architecture billings and construction spending. Any score above 50 indicates an increase in billings.
| Aug 11, 2010
Architecture Billings Index drops to lowest level since June
Another stall in the recovery for the construction industry as the Architecture Billings Index (ABI) dropped to its lowest level since June. The American Institute of Architects (AIA) reported the August ABI rating was 41.7, down slightly from 43.1 in July. This score indicates a decline in demand for design services (any score above 50 indicates an increase in billings).
| Aug 11, 2010
RTKL names Lance Josal president and CEO
Lance K. Josal FAIA has been named President and CEO of RTKL Associates Inc., the international planning, design and engineering firm. Josal succeeds RTKL’s current President and CEO, David C. Hudson AIA, who is retiring from the firm. The changes will take effect on 1 September 2009.
| Aug 11, 2010
Balfour Beatty agrees to acquire Parsons Brinckerhoff for $626 million
Balfour Beatty, the international engineering, construction, investment and services group, has agreed to acquire Parsons Brinckerhoff for $626 million. Balfour Beatty executives believe the merger will be a major step forward in accomplishing a number of Balfour Beatty’s objectives, including establishing a global professional services business of scale, creating a leading position in U.S. civil infrastructure, particularly in the transportation sector, and enhancing its global reach.
| Aug 11, 2010
Construction unemployment rises to 17.1% as another 64,000 construction workers are laid off in September
The national unemployment rate for the construction industry rose to 17.1 percent as another 64,000 construction workers lost their jobs in September, according to an analysis of new employment data released today. With 80 percent of layoffs occurring in nonresidential construction, Ken Simonson, chief economist for the Associated General Contractors of America, said the decline in nonresidential construction has eclipsed housing’s problems.
| Aug 11, 2010
Billings at U.S. architecture firms exceeds $40 billion annually
In the three-year period leading up to the current recession, gross billings at U.S. architecture firms increased nearly $16 billion from 2005 and totaled $44.3 billion in 2008. This equates to 54 percent growth over the three-year period with annual growth of about 16 percent. These findings are from the American Institute of Architects (AIA) Business of Architecture: AIA Survey Report on Firm Characteristics.
