Professional landscapers spend their careers making the grounds around homes and buildings a little more beautiful and a little more green. Jensen Corp. Landscape Contractors helped take that concept one step further when it installed a green roof onthe California Academy of Sciences. The roof, designed by architect Renzo Piano, echoes San Francisco's rolling hills, which posed some unique challenges for Jensen's workers. "Keys to this job were the steep slopes," says John Vlay, CEO of Jensen Corp.Holdings, the parent company of the landscape contractor division. "Some of the slopes were greater than a 45-degree angle. We had to specially train our men with harnesses and climbing ropes, and how to tie-off to get the materials all the way up on thesides and up to the top of the hills." Translating the design on paper to the reality of the 2.5-acre roof had its challenges, including transporting the material onto the roof.
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