Originally posted by bobad:
Matt, I've seen dry cement dumped into water-filled holes, and it works great. I suppose it could settle out if the hole were very deep, but I can tell you from experience it won't separate in a 10 foot hole.
I am debating whether to use pressure treated 6x6's for my dock pilings sunk 3 feet into the pond bottom or use 4 foot Sonotubes for a base for the dock pilings. If I used Sonotubes and could just dump bags of dry Sakrete in them it would be real easy to do. However, I am not so sure the result would be strong/stable enough - or would it? I would also consider using this technique for pilings to make a bridge crossing over small creek.
