| http://www.w3.org/ns/prov#value | - But do not you have to pour the concrete directly into the bottom of the tube to properly displace the water?If you dump concrete into the top of a sonotube that is full of water, the concrete will break up and separate into rock and sand before it gets to the bottom, right?do not you have to use some sort of tube or hose that you insert all the way to the bottom of the tube and pour concrete throug
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