Anti-seep collar: 100% Bentonite vs. PVC Collar - 09/06/15 06:16 PM
I have a pond and didn't pay close enough attention to the anti-seepage collar around inlet pipe. Now I'm draining pond due to seepage along pipe exiting from the pond.
So, I'd like to get it right the second time around and would appreciate your expertise.
Bentonite Option 1:
Since I already have 50 bags of sodium bentonite, I'd like to use it if possible to create an anti-seep collar. My inlet pipe is 8" PVC and I would like to know if a 4'x4'x18" form around center line of existing pipe and then filled with 100% sodium bentonite (no soil mix) will create a proper anti-seep collar. Finally, I would compact around the collar with jumping jack compactor. The full pond water level is 24" above pipe. I would leave the wood form in place to rot so as not to disturb the compaction.
As a test, I got a 16 oz plastic cup, punched holes it the bottom, added 1" of chipped stone, then 1 cup of bentonite and filled to the brim with water. So far not a drip has come out the bottom of the cup.
PVC Collar Option 2:
Or is it better to buy a 4'x4'x 1/4" HDPE manufactured collar. ScheibDrainage makes one that bolts around existing pipe.
PVC + Bentonite Collar Option 3:
Or should I use the PVC collar PLUS the bentonite form against the PVC collar on the pond side?
Thank you!
So, I'd like to get it right the second time around and would appreciate your expertise.
Bentonite Option 1:
Since I already have 50 bags of sodium bentonite, I'd like to use it if possible to create an anti-seep collar. My inlet pipe is 8" PVC and I would like to know if a 4'x4'x18" form around center line of existing pipe and then filled with 100% sodium bentonite (no soil mix) will create a proper anti-seep collar. Finally, I would compact around the collar with jumping jack compactor. The full pond water level is 24" above pipe. I would leave the wood form in place to rot so as not to disturb the compaction.
As a test, I got a 16 oz plastic cup, punched holes it the bottom, added 1" of chipped stone, then 1 cup of bentonite and filled to the brim with water. So far not a drip has come out the bottom of the cup.
PVC Collar Option 2:
Or is it better to buy a 4'x4'x 1/4" HDPE manufactured collar. ScheibDrainage makes one that bolts around existing pipe.
PVC + Bentonite Collar Option 3:
Or should I use the PVC collar PLUS the bentonite form against the PVC collar on the pond side?
Thank you!