On September 23, winds on the back side of Hurricane Rita produced a storm surge and waves that stripped the rip rap
, or large rock protective covering, from approximately 11,000 feet of the approximately 13,700 foot long earthen embankment.
They have installed many different solutions which include erosion-control blankets, terraces, drains, Rip Rap
, and concretes mats.
He also pointed out that several engineering alternatives to solve the erosion problem were considered: 1) horizontal directional drilled (HDD) replacement crossing; 2) installation of a pipe support to brace the unsupported span coupled with Palisades geowebbing to allow siltation around the pipe; and 3) rebuilding the bank and armoring the pipe with a combination of rip rap
and concrete pre-cast mats.
Remember that the toad requires uplands, it cannot burrow into rip rap
or into soil-cement bank stabilizers.
If rip rap
is used to make the repairs it will probably come from central Texas, but it will first have to be shipped by rail to Livingston.
Installation of rip rap
to improve slope stability.
Sales Manager Scotty Reed said that rip rap
is a much-needed commodity in their market area, and base stone shipped to the gulf can command a premium price of between $20 and $30 per ton--making up the core of lucrative sales program for the company.
Next, two layers of large 24-36-inch diameter rip rap
was placed parallel to the bank.
The bank stabilization may include rip rap
(boulders), granite and soil cement.
Proven techniques such as terracing, the use of rip rap
(loose stone or rock), and planting new vegetation remain effective in many situations.
Placement of rip rap
in river banks is a method used to help prevent erosion and to stabilize the soil.
The earthen embankment is protected from water erosion by rip rap
, large 30 inch diameter stones, on the lake side of the dam.