WTC Memorial Has
Green Future

New York City, NY
Installation Date:

National September 11 Memorial & Museum

WSP Cantor Seinuk

Lend Lease
Construction of the World Trade Center Memorial Plaza, which honors victims of the attacks on the World Trade Center in 2001 and 1993, required the site to earn a LEED® gold rating from the U.S. Green Building Council (USGBC).


The stormwater drainage and storage system, which is made from N-12 pipe, collects water and irrigates the park setting, where over 400 trees cover the area that was the basement of the buildings destroyed on Sept. 11, 2001.

Perforated N-12 pipe, wrapped in a geotextile fabric to block fines and sands, gathers water into the system and the water flows into sumps. The water is then re-used for the irrigation. Due to its design, N-12 produces a smaller environmental impact than other pipe materials, such as corrugated metal or reinforced concrete pipe. This allowed the Memorial Plaza to be certified through the USGBC LEED program.

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