Thanks Cliff.
Maybe I'm becoming over-cautious because I've had to redo the job twice and still didn't get it right. I like the idea of the plumb line and the hose, I think that will help a lot. I guess if I can keep the outside diameter even, the gap will take care of itself.
I'm...
I know nothing about math/engineering, so I apologize if this isn't the proper place to post this question. Maybe I should be in a builder's forum or something. :confused: Anyways...
I'm building a round retaining wall on a slope at the corner of my house. I'm using stackable bricks that...