Invisible Structures, Inc.

Athletic Practice Fields, Tulane University, New Orleans, LA - Case Study

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Courtesy of Invisible Structures, Inc.

  • Project Name: Athletic Practice Fields, Tulane University
  • Products: Rainstore3
  • Applications:  Stormwater Detention System
  • City: New Orleans
  • State/Province: Louisiana
  • Install Date:  May 2014
  • Client: Tulane University
  • Install Size:  14,286 Rainstore3 units
  • Address: 6506 S. Claiborne Ave
  • Designer: Gould Evans Associates and Lee Ledbetter & Associates
  • Contractor: Woodward Design Build – General Contractor.  Durr Heavy Duty Construction (sub) for the Rainstore3 installation.
  • Directions: 6506 S. Claiborne Ave
  • Location: Athletic Practice Fields
  • Photography:  Roger Tadlock, MKM Sales, 2014

Summary: Dealing with the high water table is problematic for Tulane Univeristy and all of New Orleans.  Designers from Gould Evans Associates and Lee Ledbetter & Associates needed a way to store the site’s runoff from stormwater while maximizing the limited area for an athletic practice field.  Rainstore3 was chosen for the detention system in one chamber with two heights: one section at 5 units high (50cm) and the other area at 7 units high (70cm).

The Rainstore3 units are placed in the fabric / membrane / fabric wrap. Notice the two different depths of the systems.

Precautions had to be made in the design of the system as the water table will exert upward force on the chambers at different times.  Designer ended up wrapping nearly all of the sides of the chamber (leaving the top for infiltration) with a impermeable membrane.  Calculations were made to see how buoyant this made the Rainstore3 system.  Then designers could counteract the upward buoyancy pressure with static pressure from the cover material and athletic field surface turf preventing the system from “floating” or popping up.

Geotextile fabric is placed above the prepared excavation.

The chamber is capable of holding 1428 cubic meters (50,000 cu ft) of stormwater.