The Green Roof Industry Association has awarded the new Cal Academy of Sciences with an award of excellence for their green roof installation. The new Academy opens on September 27, 2008. The living roof is a key part of the platinum LEED certification the museum has accomplished. From the southeast view the building truly blends in to the landscape. From the west, see picture below, still a sight to behold.
The roof also retains 2 million gallons of rainwater, preventing 70% of the rainwater that falls on the roof from becoming runoff. The water that does run off the roof is collected in basement-level cisterns and reused for roof irrigation. No potable water will be used to irrigate the living roof.
The roof covers an ambitious 197,000 sq. ft. to a depth of 6-7 inches and cost $17 per sq. ft. In conjunction with the building’s other innovative sustainable features, the living roof contributes to many of the anticipated LEED® points, which, when achieved, will make the Academy the world’s largest LEED® Platinum -certified public space