Volume 47, Issue 11 - November 2012
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The 3rd Annual USGlass Magazine
Green Design Winner
USGlass magazine set out to find an architectural project that makes use of glass not just for its aesthetic purposes, but also for its inherently green features. In this issue we bring you our winner in the 3rd Annual USGlass Magazine Green Design Awards.
This year’s winner showcases glass used to provide a range of attributes, from light transmission and aesthetics to daylighting, views and more. The project is evidence that green attributes continue to be as popular as ever.
San Francisco Public Utilities Commission Office Building
They describe the 277,511 gross-square-foot, $190 million building as one of the greenest urban office buildings of its kind.
“Our intent from the beginning was to create the most energy-efficient office building developed in an urban setting in the United States to date,” says Ryan Stevens, KMD’s director of design (Stevens is not affiliated with Stevens Architects). “Many of these features are uncommon in buildings today, but will be commonplace in years to come.”
The project features glazing elements such as solar panels on sunny exteriors, as well as sun-shading and other techniques that help make the building use 32 percent less energy than similarly-sized office buildings.
According to the architects, “the integrated, hybrid solar array and wind turbine installation can generate up to 227,000 kilowatt hours per year or 7 percent of the building’s energy needs.”
In addition, daylight harvesting that bounces sunlight at appropriate amounts into workspaces helps save electricity and minimizes artificial lighting to help enhance worker productivity.
Fire-rated glazing materials used within the interior also added to the building’s green features. According to Diana San Diego, SAFTI First marketing director who nominated the project, the company supplied two-hour transparent walls using SuperLite II-XL 120 in the GPX framing for all 14 floors of the stairwell.
“Because it is transparent, natural daylight is able to penetrate further into the building as well as provide a connection to the outdoors,” she says. “The materials are also within 500 miles of the site.”
She adds, “In the end, our products helped the building achieve LEED platinum status and helped lay claim as the ‘greenest building in North America.’
Architects add that the project also will exceed California’s Title 24 requirements for energy efficiency in new office buildings by 55 percent, according to SFPUC estimates.