uplift pressures in concrete walls
uplift pressures in concrete walls
(OP)
Hello, I have a problem that I hope someone here is able to help with.
I am doing a 2' concrete wall. 9' tall if that matters. I have to install a trench in the middle of the wall that is 2' deep and 8" wide. It runs the length of the wall. What I need to find out is this, how much up lift is the concrete going to put on this trench form and want to make it rise out of the wall? I have it hanging from plywood spreaders. But that is just holding it up. How do I keep it from coming up as I place the concrete around it?
Thanks
I am doing a 2' concrete wall. 9' tall if that matters. I have to install a trench in the middle of the wall that is 2' deep and 8" wide. It runs the length of the wall. What I need to find out is this, how much up lift is the concrete going to put on this trench form and want to make it rise out of the wall? I have it hanging from plywood spreaders. But that is just holding it up. How do I keep it from coming up as I place the concrete around it?
Thanks





RE: uplift pressures in concrete walls
If the top 2 feet of concrete is placed very slowly in level lifts, the uplift force will be minimized to the depth of the plastic mix. I suggest no more than one vertical foot of placement per hour with normal mix design.
RE: uplift pressures in concrete walls