Texas Tuff Rock Bags(tm) substituted for Gabions & Riprap
Project Case Study - Texas Tuff Rock Bags(tm) enabled the project to progress without complications
A US highway embankment / bridge foot suffered from scour and erosion. A maintenance project was initially designed to place gabion and rip rap to stabilize the embankment and address the future exposure. However, due to the soil characteristics and seepage, a coffer dam initially deployed was not effective in holding back the water and failed to allow the placement of the intended gabions.
After a project review with the client, it was decided to utilize the Texas Tuff Rock Bags(tm) (2Ton) as a substitution.
A production process was set up in the contractor's yard. Texas Tuff Rock Bags(tm) were filled and transported to the site by flat bed truck.
Texas Tuff Rock Bags(tm) were placed in the water at the foot of the embankment and then on the embankment in a stair step fashion. By doing this, the Rock Bags are able to protect from scour and erosion providing a stable structure and support for the bridge.
After the completion, the sheet piles were removed the the project was completed leaving the embankments and bridge protected as desired. The contractor was very pleased with the result and the ease / effectiveness of using the rock bags.
The result of the finish product can be seen below. The gallery below outlines many steps of the construction.
Photo Gallery
Summary
The substition of the Texas Tuff Rock Bags(tm) for rip rap and gabions in this project offered the following benefits:
- Allowed to project to overcome the obstacles of the original design.
- The placement of Texas Tuff Rock Bags(tm) were accomplished with no ground preparation on the embankment and in the water.
- The simple pick and place process to deploy the rock bags using the single point of control "ring" was safe, simple, quick and effective to complete the project.
- The Contractor considers this a much preferred solution to the original design and the use of gabion.
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