TriLock Block out performs other concrete revetment systems like cable concrete, fabric formed filter point mat, and other cellular articulated concrete block systems.
Tri-Lock is a flexible erosion control system.
Here are pictures of the Tri-Lock being placed in the tail-race of powerhouse drop #1. As you can see the placement is only about 1/2 complete.
11-19-12 thru 11-26-12 thus far
Mountain States Hydro, LLC