Steve,
Please elaborate on what is happening in this photo.
How tall is the vertical?
Was anything used as structure to support the vertical?
How long was the feature installed?
Was this under normal conditions or was there some other factor that lead to the failure? Heavy rain, neighbor's yard flooding, over watering the slope behind the feature?
I am not suggesting that we CUT CORNERS on structure. I am looking for alternative and possibly cost saving structural methods for the steep verticals. Say, like plywood as shown in post #33 of this thread. JK
Believe me I understand clay. It's called Redlands for a reason. Hard as concrete when dry and when it is wet you can loose your boots walking in it.
It must be Beer-Thirty by now! Looking forward to your reply.
Respectfully,
The Pond Digger