[Fierce Allegiance]

Civil Engineer Ping List:

Thanks for the ping, CD.

I have been involved in levee strengthening projets on the American River, specifically in Sacramento where a backhoe digs a trench approx 3-4 wide, and almost 100 feet deep. The trench is backfilled with a soil/cement/bentonite tokeep the water on the proper side. Here's a backhow used in the project. BTW, this work runs about 3-5 million per mile of levee.

[Fierce Allegiance]

Backhoe, not backhow.

[jeffers]

I like that, with a grout curtain being impractical and steel being steel with its affinity for oxidation and corrosion in salt environments.

Can you backfill under pressure, as a slurry that sets up later, or do you have to keep the trench unwatered until you've backfilled it?

[gridlock]

Hey, dude! You might want to check out Post #29...