![]() I'll fill every other cell with concrete and rebar, and be careful not to let it overflow by only filling to the top of the 2nd to last block in one pour, and then I can just fill the top row roughly by hand later. I'll add horizontal rebar between the top two rows to create a bond beam. It's in the footer, obviously, which will be tied into vertical rebar. Since this is just a filter pit, and my soil has remained perfectly vertical for the past six weeks without any reinforcement whatsoever, I think I'm going to skip the horizontal rebar. I think you went full bore and filled all of the cells with concrete, so you didn't have the issue of trying to fill only every other column with concrete when there are notches cut into the sides of the block. Question 2: If I went with one wide channel for both pieces of rebar, won't the concrete spill out when I go to fill every other column? It seems like the opening for the horizontal rebar will allow the concrete to spill out of the column with the rebar into the side columns. Do many people use one piece of rebar? My county requires two pieces for retaining walls, which I know my pit is not, but I was going to use that as a guide. Alternately, I could just cut one wide notch for both pieces. Question 1: Do most people use one stick of rebar or two? I was planning two pieces of 1/2" (I've already had tons of this delivered), but with the vertical rebar sticking up through the hole, it seems really crowded to cut two parallel notch rows - I'm not sure I could make it fit. I just have regular block, so I need to notch the block for the rebar with a diamon blade. ![]() Vertical rebar will be in every other cell column. ![]() I'm building a concrete block filter pit, and had planned on putting horizontal rebar in every other row. ![]()
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