What I described is similar to what described except that I would be using 4x4 instead of chamfer strips at the rear corners. Now that I understand what the chamfer strips do, I see how your method works.
Thank you all for your advice.
This is what I was thinking of when I said blind side waterproofing.
PEinc, are the chamfer strips used to form the joint of the bentonite sheets? I can see extending the width of the sheets about 4 inches or so on each side and cover the extra 4 inches with 4 x 4 so that the concrete isn't...
Thanks Ron and Hokie for your responses. I was having a hard time seeing how this could be done. Seems like a proper sump pump is the way to go even if we use methods Ron suggested.
We will be underpinning an existing elevator shaft and the groundwater is almost certain to come into play. What is the best way of waterproofing foundation underpinning?
I was considering applying the waterproofing on the inside of the shaft with protection board. However, I am reconsidering...
