Project Name: Green Roof Retrofit
Summary: Improved design meets strict stormwater credit requirements
Client: University Place Associates
Project Location: Philadelphia, PA
Project Size: 21,900 square foot rooftop
- Green Stormwater Management
- Agency Consultation
Project Timeframe: 2014
2.0 University Place is the first L.E.E.D. Platinum Pre-Certified building to be built in the city of Philadelphia. The building has many green design elements including efficient heating and cooling systems, large windows for natural lighting, and a rooftop green roof. Prior to Kleinschmidt's involvement, the green roof did not meet the Philadelphia Water Department's (PWD) strict stormwater credit requirements, and the building owner had to pay large stormwater fees.
Kleinschmidt was chosen to design modifications to ensure the green roof would meet these credit requirements. Kleinschmidt designers worked closely with the client to provide a solution that was both cost effective and would comply with PWD credit requirements. The green roof was expanded where possible to provide additional storage and stormwater treatment. In areas that were not suitable for green roof construction, dimpled underdrains were used. In addition, a new drainage system was designed to drain stormwater, thus allowing for additional disconnected impervious area credits.
The improved green roof design was approved by the PWD shortly after submission. Once construction is complete, Kleinschmidt will apply for the appropriate PWD stormwater credit approvals and the client will no longer have to pay the large stormwater fees.