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Van Dusen Botanical Garden, Vancouver/Canada

ZinCo GmbH
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Green roof with a roof shape imitating the leaves of an orchid flower

In 2011, the approximately 22–hectares large VanDusen Botanical Garden, existing since the 1970s, was provided with a new representative visitor centre in the size of approximately 1,800 m². The peculiarity of the design is the roof shape, imitating the leaves of an orchid flower. The flower stem is represented by the central atrium. The idea for this roof shape was developed by the famous landscape architect Cornelia Hahn Oberlander, known for the perfect integration of her landscaping into the overall architectural concept. Due to the varying inclinations and curvatures of the roof surface three different systems were applied: on the flat areas a build-up based on Floradrain® FD 40-E, on the pitched roof areas a build-up with Floraset® FS 75 and on the steep roof areas a build-up with Georaster®.

The peculiarity of the design is the roof shape, imitating the  leaves of an orchid flower.
The green roof of the new visitor centre

The Floradrain® elements adjacent to the pitched roof area where Georaster® was applied.

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