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Thread: Need Sump Basin Advice

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  1. #1

    Default Need Sump Basin Advice

    I've been thinking about totally redoing the sump pits in my recently purchased house and I need some advice and feedback for my plan to redo them.

    I currently have 2 clay sump pits, 1 that is attached to 4 inch drain tile and one that is not attached to any drain tile. The pit with the drain tile has the main sump pump and the other pit has a Big Dog battery backup pump and a water powered sump pump. There is a groove cut out of the concrete floor that connects the main pit to the backup pit and allows water to overflow to the backup pit without getting on the basement floor. I have attached a picture here that illustrates what I am talking about.

    What I would like to do, is consolidate the 2 pits into one larger basin. I haven't been able to find anything marketed as a sump basin that is the size I want, but I have found some sewage basins that are. I was looking at a Dayton 24"x36" sewage basin to use as a new sump basin. Is it ok to use a sewage basin as a sump basin? Also, would I need to drill holes in the bottom of the sewage basin to let ground water in that might be below the pit? Right now, it looks like water enter both my pits from the bottom as well as from the drain tile.

    Any comments will be much appreciated
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  2. #2

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    No it is not going to matter which basin you use, they are going to be made out of "poly" or fiberglass and both will do the job you want them to do!

  3. #3

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    Thanks ZP! I kind of had a feeling it didn't matter. After doing some more googling, I found some places that market the basin as sump or sewage. I guess I should have googled harder before asking that question I'm just happy to get confirmation of my suspicion.

    Also after cleaning out my sump pit yesterday I think I answered my own question about whether or not I need to drill holes in the bottom it. I found 2 larger holes at the bottom of my clay basins, large enough to get my finger through and feel the pebbles and muck underneath the basin. My only question now is, how large should I make the holes in the new basin? Large enough to get my finger through seems a little large. I was thinking around 3/8". Is that a suitable size?

    I can't wait to get started on enlarging my pit. I also look forward to being able to put a cover on it. Beside finding rocks and mud in my pit, I found a stick, a 2" screw, and a roll of electrical tape!
    Jason Baker

  4. #4
    Commercial Plumber markts30's Avatar
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    While you are fiddling with the plumbing, I would get rid of the rubber fernco style couplings and replace them with banded couplings (metal sleeves cover the rubber) they are less prone to blow-outs and are legal for use above ground...

  5. #5

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    Quote Originally Posted by markts30 View Post
    While you are fiddling with the plumbing, I would get rid of the rubber fernco style couplings and replace them with banded couplings (metal sleeves cover the rubber) they are less prone to blow-outs and are legal for use above ground...
    I'll keep that in mind. If I'm going to put the time and money into this project, I might as well do it right. I'll definitely look into them.

    Thanks to everyone who's taken the time to respond. Its very helpful. This is my first major project for my house and I don't want to mess it up. I also want to make it look as professional as possible. I hate hack jobs! My pits are a hack job squared because of the previous 2 owners taking short cuts

    Anyone have any recomendations about how large I should make the holes in the bottom of the basin so the ground water can seep in? Also, how far away from my basement wall should I try to place the new pit?
    Jason Baker

  6. #6

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    Well I have started doing some measurements in my basement and have come to the conclusion, I will not be able to use a large plastic sump liner. Upon further inspection of my floor, it also appears that the sewer line runs between my 2 sump pits. The house had a septic tank at one point but is currently hooked up to the city sanitary sewer. I don't know if the pits were dug before or after the sewer line was installed. Also the drain tile in the main sump wouldn't line up with the inlet on any of the plastic liners I have seen.

    The only solution I could think of for this problem would be to use a rectangular basin, but it doesn't look like that is something that is readily available. I've been googling all day trying to find them with no luck. Would it be possible to make my own basin by digging out my floor, making some forms and pouring a concrete one? If thats a terrible idea for whatever reason I'd like to know. Any input you guys may have would be greatly appreciated. I'd really like to clean up the current mess (see photo above) I have inherited
    Jason Baker

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