US Army Corps of Engineers: Series of Projects to Strengthen Levees

Project Summary

**Excavation Process during first Marysville Project**

These walls were all constructed to strengthen the subsoils of flood levees to prevent under-seepage and potential failures during flood events. Permeability requirements for SB were 1 x 10-9 m/sec and for SCB, 5 x 10-9 m/sec. Geo-Solutions followed a very complicated QC program to ensure that all wall requirements were met.

The photo to the right shows the excavation proceeding to depths of 22 meters (72 feet) on the first Marysville project. The project had special work area limitations, with the toe of the cut-out dike on one side and an environmentally sensitive area on the other. The total work area available for construction was only about 20 meters wide.

**Slurry Wall Work proceeding on the Yuba City Levee**

Backfill was mixed with an extended reach excavator with the assistance of a small bulldozer. Because of the space limitations, the mixing excavator sat over the recently backfilled trench on wooden mats, where it could reach to mix and place the backfill.

**Excavation proceeding under slurry, digging 19 m at one of the Yuba City projects.**

**Work on another Yuba City project requiring SCB construction. This photo shows the grout plant used**

Location

Yuba City, CA

Date

1996-2004

References

Client:
Nordic Construction
Marysville , CA

Owner:
US Army Corp of Engineers
Sacramento District

Slurry Wall Dimensions

This was actually a series of six large and different projects done to strengthen levees in the area north of Sacramento CA . The largest SB wall was: 90,000 sm, 900mm wide, maximum depth of 22 m.

Geo-Solutions Can Help

For more specific guidance as to how slurry wall and related underground construction technologies can be applied to your project, please contact Geo-Solutions by calling 724-335-7273 and we will be happy to assist.

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Slurry Wall Sample Specs– Geo-Solutions provides slurry wall sample specs which can be modified for real world use on your project. Download sample specification for Slurry Wall Construction.

Slurry Wall Technical Papers – Browse our library of Slurry Wall Technical Papers.

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For help with slurry walls or other forms of underground construction, call us at 724-335-7273.