PCCP earns Engineering Excellence Award
PND is honored to have earned a 2017 Silver Award for Engineering Excellence from the American Council of Engineering Companies (ACEC) of Washington, a joint submission with GeoEngineers, Inc., for the design of the Permanent Canal Closures and Pumps (PCCP) project in New Orleans, Louisiana.
We served as the design engineer for the design of temporary cofferdams at three drainage canal sites adjacent to Lake Pontchartrain. The objective of this project was to construct three massive pump stations to replace temporary facilities that had been constructed post-Hurricane Katrina. The PCCP project spanned three sites: 17th Street, Orleans Avenue, and London Avenue Canals. At more than 50 feet deep, these OPEN CELL SHEET PILE™ cofferdams represent the deepest excavation project undertaken by the US Army Corps of Engineers (USACE) in Southern Louisiana utilizing a ground shoring system of this magnitude.
PND is honored to share this award with GeoEngineers, Inc., of Redmond, Washington. GeoEngineers provided critical geotechnical engineering expertise with respect to local knowledge of the site, supplemental soil testing beyond information from the RFP, and completion of vital soil/structural interaction (SSI) modeling as part of a detailed and coordinated design effort.
“At the 17th Street canal site, the 40- to 50-ft-deep cofferdams were as large as a football field and strong enough to support a 300-ton crane within 5 ft of its edge. “It’s mind-boggling,” says Michael Pittman, owner of the Pittman Group, which has worked extensively on similar jobs in Louisiana soil. “I have never seen anything like it.”1
The pump stations a nearing completion and are expected to be fully operational by the upcoming hurricane season. Sheet piles from the temporary OPEN CELL cofferdams are currently being removed as the pump stations are finishing construction. The project is expected to be completed before this year’s hurricane season.
For more information about the PCCP project, contact our Seattle office.
Periodic photos of this incredible photos are posted frequently on the USACE's Flickr page.
For updates from the USACE, visit their project website.
1 Russel, P. (2016) ‘New Orleans Pushes to Finish Last Big Storm-Surge Project.’ Engineering News-Record (ENR).