OT: "I want you to kill all the gophersh"

still just me said:

Where's Bill Murray when you need him?

http://www.foxnews.com/story/0,2933,320496,00.html

When did the concept of granular filter layers in earthen embankments to
prevent piping of fines disappear?

--
Tom Sherman - Holstein-Friesland Bovinia
POST FREE OR DIE!

Tom Sherman said:

still just me said:

Where's Bill Murray when you need him?
http://www.foxnews.com/story/0,2933,320496,00.html

When did the concept of granular filter layers in earthen embankments to
prevent piping of fines disappear?

Would geomembranes or geo-composite layers be useful in this situation?
Or would they create a failure plane?

\\paul (little rusty on the geotech stuff)

Paul M. Hobson said:

Tom Sherman said:

still just me said:

Where's Bill Murray when you need him?
http://www.foxnews.com/story/0,2933,320496,00.html

When did the concept of granular filter layers in earthen embankments
to prevent piping of fines disappear?

Would geomembranes or geo-composite layers be useful in this situation?
Or would they create a failure plane?

I would be hesitant to rely on a geotextile filter, since it will
rupture at a level of deformation at which the granular filter would
still be effective.

Appropriate woven geotextiles can be used to increase slope stability.
The friction angle between the geotextile and the soil would likely be
better than the friction angle of a fine grained soil in an drained
condition (24° or less).

Quoted message said:

\\paul (little rusty on the geotech stuff)

butbutbut, that is the fun stuff!

--
Tom Sherman - Holstein-Friesland Bovinia
"And never forget, life ultimately makes failures of all people." A. Derleth