After an inspection in early 2016, a flood protection levee along the Little Calumet River was found to be out of compliance with the United States Army Corps of Engineers (USACE) Levee Safety Program. In order to be recognized by the Federal Emergency Management Agency as a certified levee, a levee must meet the USACE levee certification requirements. This certification required the City of Lansing working in conjunction with its consultant (Robinson Engineering), to clear woody vegetation from the levee face and prevent future growth. Additionally, the levee needed to be protected from damage caused by burrowing animals. The root system from woody vegetation/trees and tunnels from burrowing animals can create a pathway for infiltration through the levee, causing piping, which can ultimately lead to the levee’s failure.
Robinson Engineering proposed to clear the levee slope of woody vegetation and line the face with approximately 16,000 square feet of Concrete Cloth CC8. The Concrete Cloth GCCM underlayment was used to prevent the growth of trees and damage from tunneling rodents. Soil anchors were used to hold the GCCM into the levee soil substrate prior to placement of riprap. Riprap would be placed on the uncured CC8 fabric prior to hydrating. An existing steel and concrete flood wall along the top of the levee slope was the terminus of the fabric.
The levee was rehabilitated within a matter of weeks and is now in compliance with USACE Levee Certification Requirements. The city may consider using Concrete Cloth on other sections of the Little Calumet River Levee System.
Application: Levee Slope Protection
Client: City of Lansing
Location: Lansing, IL
Installation: Nov/Dec 2016
Installer: Illinois Construction Corporation
Designer: Robinson Engineering