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
| Dec 30, 2014
The future of healthcare facilities: new products, changing delivery models, and strategic relationships
Healthcare continues to shift toward Madison Avenue and Silicon Valley as it revamps business practices to focus on consumerism and efficiency, writes CBRE Healthcare's Patrick Duke.
| Dec 29, 2014
High-strength aluminum footbridge designed to withstand deep-ocean movement, high wind speeds [BD+C's 2014 Great Solutions Report]
The metal’s flexibility makes the difference in an oil rig footbridge connecting platforms in the West Philippine Sea. The design solution was named a 2014 Great Solution by the editors of Building Design+Construction.
| Dec 29, 2014
HDR and Hill International to turn three floors of a jail into a modern, secure healthcare center [BD+C's 2014 Great Solutions Report]
By bringing healthcare services in house, Dallas County Jail will greatly minimize the security risk and added cost of transferring ill or injured prisoners to a nearby hospital. The project was named a 2014 Great Solution by the editors of Building Design+Construction.
| Dec 29, 2014
New mobile unit takes the worry out of equipment sterilization during healthcare construction [BD+C's 2014 Great Solutions Report]
Infection control, a constant worry for hospital administrators and clinical staffs, is heightened when the hospital is undergoing a major construction project. Mobile Sterilization Solutions, a mobile sterile-processing department, is designed to simplify the task. The technology was named a 2014 Great Solution by the editors of Building Design+Construction.
| Dec 29, 2014
Startup Solarbox London turns phone booths into quick-charge stations [BD+C's 2014 Great Solutions Report]
About 8,000 of London’s famous red telephone boxes sit unused in warehouses, orphans of the digital age. Two entrepreneurs plan to convert them into charging stations for mobile devices. Their invention was named a 2014 Great Solution by the editors of Building Design+Construction.
| Dec 29, 2014
Spherical reflectors help spread daylight throughout a college library in Portland, Ore. [BD+C's 2014 Great Solutions Report]
The 40,000-sf library is equipped with four “cones of light,” spherical reflectors made from extruded aluminum that distribute daylight from the library’s third floor to illuminate the second. The innovation was named a 2014 Great Solution by the editors of Building Design+Construction.
| Dec 29, 2014
Hard hat equipped with smartglass technology could enhance job site management [BD+C's 2014 Great Solutions Report]
Smart Helmet is equipped with an array of cameras that provides 360-degree vision through its glass visor, even in low light. It was named a 2014 Great Solution by the editors of Building Design+Construction.
| Dec 29, 2014
Clayco lends operational support and financing to construction services startups [BD+C's 2014 Great Solutions Report]
Design-build firm Clayco has launched an investment arm called Treehouse Adventures to provide financing and operational infrastructure to startups, including those serving the AEC industry. The new venture was named a 2014 Great Solution by the editors of Building Design+Construction.
| Dec 29, 2014
Reef Worlds to build world’s largest underwater theme park for luxury resort [BD+C's 2014 Great Solutions Report]
Dubai is known for its gargantuan commercial building projects. The latest to be proposed is the world’s largest underwater theme park, designed and built by Reef Worlds. The project was named a 2014 Great Solution by the editors of Building Design+Construction.
| Dec 29, 2014
New data-gathering tool for retail designers [BD+C's 2014 Great Solutions Report]
Beacon technology personalizes smartphone messaging, creating a new information resource for store designers. It was named a 2014 Great Solution by the editors of Building Design+Construction.