Magnificient Ballard Library Green Roof in Seattle

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Ballard Library is one of the trendiest neighborhoods in Seattle right now but its roots come from the stoic Scandinavian and maritime tradition. The green roofed Ballard Library bridges has main aspects in a beautiful light capturing design. The green roof sweeps over the building and extends around the library perimeters to provide shelter from the weather. Sunlight is harvested to flood the interior and feed the solar electric panels that line the roof.

Designed by Architects Bohlin Cywinski Jackson, the Ballard Library sweeping profile adds a gentle green character to the neighborhood. The roof consists of 18,000 low water plantings which library patrons can check out up close through a rooftop periscope near the checkout desk. The green roof absorbs a tremendous amount of storm water in the rainy city, reducing stress on the city’s drains. The roof also helps maintain the temperature inside as well as adding some biodiversity to the neighborhood.

The extended overhangs add a welcoming and sheltered entrance to the interior. The roof also rises dramatically to the north, allowing soft indirect light to flood the interior. This not only makes for a more comfortable reading environment but reduces the required lighting and cooling. A generous installation of skylights adds to the lighting profile. With 17 solar panels set on the north end demonstrate the potential of PV and share space with a large array of sensors measure rooftop weather conditions, displaying an interpretation of the measurements on an LED display.

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source: inhabitat, bcj, archdaily

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