Snap - August/September 2011 - (Page 18)
for the new
Pola headquarters in Tokyo, design architect Koichi Yasuda tapped Hoberman Associates to integrate shading into the office’s curtain wall. In response, the studio conceived 185 acrylic, fritted shutters that move by linear actuator and CPU, and that are illuminated at night.
Facades that shade, display, and generate.
by david sokol
hinged connection to the mullions on the inner glazing. “In their closed position, they visually float symmetrically between the mullions. When opened, they retract behind the mullions on the outer glazing, and seemingly disappear to a viewer on the street.” While the shutters turn individually, they are synchronized in groups of 14. Movement is initiated by a linear actuator at the base of the shutters, with a CPU controlling the entire 3,000-square-foot system. “During the day, the position of the shutters is directly tied to exterior light levels, with a manual override if occupants wish to change shutter position,” Hoberman explains. The system was projected to reduce cooling demand by 30 percent, and a postoccupancy study to pinpoint the reduction is still forthcoming. At night, the facade takes a more dramatic turn, the shutters dancing to an LED-based lighting design by Shozo Toyohisa. Overall, the Pola project was a collaboration between Hoberman Associates and the design architect Yasuda Atelier and executive architect Nikken Sekkei, as well as the Adaptive Building Initiative, a three-year-old joint venture between Buro Happold and Hoberman Associates dedicated to developing environmentally responsive
by some estimates, envelopes are responsible for as much as half of a building’s energy consumption. Sustainability-minded designers and manufacturers are responding to envelopes’ significant involvement in performance by creating products and systems that can shade and ventilate building skins, and even turn them into energy generators. Whether firms are inventing such an application or adapting familiar materials to that end, these technologies promise to transform utility consumption and the marketplace.
the acrylic shutters in the Pola building in Tokyo retract behind the mullions on the outer glazing, and appear to disappear to those on street level.
Shading holds the potential not only to reduce operating load on a building’s mechanical systems but to lessen mechanical capacity altogether. For a new showroom for the Japanese cosmetics manufacturer Pola, Hoberman Associates transformed a curtain wall into a kinetic sculpture that expressly filters light. Located in Tokyo’s glitzy Ginza neighborhood, the 14-story building features 185 individually controlled shutter mechanisms mounted inside its double glazing. Each 1-by-3-meter acrylic sheet is curved and fritted. Studio namesake Chuck Hoberman explains that the shutters have a 18 | snap | august/september 2011 | sweets.com
photo credit: COURTESY MAMORU ISHIGURO (POLA BUILDING IMAGES)
tracking the tokyo sun
Table of Contents for the Digital Edition of Snap - August/September 2011
Snap - August/September 2011
Case Study: Education
Green Product Roundup
Walls & Wallcoverings
ENR Cost Reports
Regional Focus: Southeast
Live & Learn: Ceu Courses
Trade Show News
Partners in Design
Snap - August/September 2011
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