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Profile: Chicago Transit Authority
Rosemont Substation
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Bennett & Brosseau Roofing
Client: Chicago Transit
Authority and Chicago Department of Environment Location:
Chicago, IL
Size: 3,100 ft2
Installation Contractor: Bennett & Brosseau
Roofing
Landscape
Design: WESTON
Rooftop System: Extensive
Status: Completed fall
2002
Project Narrative:
One of many GreenGrid™ systems to be installed
in Chicago is on a Chicago Transit Authority (CTA) substation
along the CTA’s elevated Red Line. The new green
roof is plainly visible to the thousands of passengers
who ride the elevated train daily commuting to and from
downtown. The 3,100 ft2 rooftop garden was installed
using the GreenGrid™ 4-inch modules pre-filled
with a lightweight soil media and vegetation, and the
GreenGrid™ pavers. Installation was completed
in 2 1/2 days, including placement of 318 GreenGrid™
4-inch modules and 128 GreenGrid™ pavers. Rooftop
vegetation included Sedum spurium ‘Tricolor’,
Sedum kamtschaticum, Sedum spurium ‘Fuldaglut’,
and Festuca amethystina ‘Superba’. Species
were aligned according the rendering pictured below
and will be visible for years to come. All work for
the CTA rooftop garden was completed on time, within
the allocated budget, and without any health and safety
incidents.
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