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Author:
Lee (NJ)
I am installing French drain along perimeter in cellar myself. High water table.
Contacted plumber to install a full bathroom in cellar, sink in cellar kitchen, and slop sink in workshop (in the future I may want to add shower and toilet in workshop). I want to bury waste pipe in slab going to ejector pit. Plumber tried to dissuade me from installing ejector pit, due to high water table. Plumber said, "big headache, ejector pit will float, due to high water table."
Please help me troubleshoot this issue, I want to install ejector pit. Is there any way around this problem?
Thank you.
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Author:
m & m (MD)
Sure. Open up the floor and install the pit. Be prepared to pump the water out that you will encounter and keep it out for the duration of the pour. Prior to the pour, fill the pit and underslab drains with water. You may also want to brace the pit against the floor joists above.
Edited 1 times.
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Author:
Wheelchair (IL)
Just how high is your water table? If it is level to your basement floor, your pump will be cycling every hour or sooner. Are you considering a concrete pit, a pre-cast or a fibre-glass form?
Your licensed plumber has seen your property so they have a much better insight than we. Do your neighbors have issues as well?
Best Wishes
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Author:
hj (AZ)
quote; If it is level to your basement floor, your pump will be cycling every hour or sooner. Are you considering a concrete pit, a pre-cast or a fibre-glass form?
It will not cycle constantly, unless the drain tiles are connected to it. An ejector normally has a "precast" cast iron or fiberglass basin.
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Author:
Lee (NJ)
Thank you for your replies.
Water table is 11 inches below slab(floor). Has not been raining all that much here in Northern New Jersey. Possibly water table may get higher. I guess I did not know what to consider in reference to the Ejector Pit basin ie. concrete pit, precast or cast iron, Fiberglass? Neighbors definitely have water in their basement. One of the neibhbors has a basement bar and fixtures requiring drainage to city sewer, however my guess is that the sewer is lower and they can use gravity for the waste to drain.
If I can use cast iron ejector basin that seems nice and heavy. If I had to go with Fiberglass how would I connect it to cement floor?
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Author:
hj (AZ)
I have used metal "Z" clips set into the concrete and over the rim of the basin.
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