Originally Posted By: msaari This post was automatically imported from our archived forum.
Does anyone know about sump pumps? The drain tiles that lead into the crock, are these drain tiles on the inside of the structure or are they the drain tiles from the footings that surround the exterior structure? This has always confused me… I know the builders place exterior drain tiles at the footings on the exterior, but where are the sump pump lines that fill the sump pump crock come from?
Originally Posted By: jhagarty This post was automatically imported from our archived forum.
Michael:
Do not know if this is true for every case. A home under construction that I am working with has the exterior and interior drain connected with piping thru the footing and terminating within the interior sump pump.
Originally Posted By: Steve Costa This post was automatically imported from our archived forum.
Around here (northeast) the exterior drains come into the crock and then are pumped up and out. Some homes may also have a sump pump that may be for a basement drain or washer, the basement may be lower than the sewer line at the street and they need to pump the water up to a line that pitchs to the street sewer.
Originally Posted By: jrooff This post was automatically imported from our archived forum.
Quote:
Some homes may also have a sump pump that may be for a basement drain or washer, the basement may be lower than the sewer line at the street and they need to pump the water up to a line that pitchs to the street sewer.
What you have described here would be called a lift station.
In our part of the woods the exterior tile go to the interior crock to be pumped away through the pipe above ground. The water from around the footing's is around 6-8' deep and has no place to go but in the house or tile and diverted to the sump pit or crock and pumped away.
Originally Posted By: Susan This post was automatically imported from our archived forum.
Hi Michael,
The "lift station" is also refered to sometimes as an ejector pump/pit. Similar to a sump except there is a "grinder" that takes care of solids and pumps, "lifts" them up to the sewer line.
Around my area, particularly in my jurisdiction, the drain tile is around the exterior of the footing. Just for sake of information, the drain tile usually is placed so it can do it's job. Usually a few inches from the footing as that is it's purpose. The pitch of the draintile is important as well and this is usually achieved with stone (size of the stone varies by area). There is stone below the tile and also above and then sometimes rosin paper (what I usually see is dark pink in color). The paper helps keep smaller spoils from getting into the perforations. Other times, the tile is socked or sleeved with a nylon type of cover. This nylon cover helps keep dirt from clogging up the draintile.
Some areas require both an interior and exterior perimeter of draintile. Depends on local requirements and conditions of the soil etc. Sometimes the draintile is also passed through the footing forms before the footing is poured. If you haven't already, try to check out a new construction where the footing is formed up. The draintile can be hard to see after the walls are poured and even before the backfill. (You have to dig through the gravel to see it! If you can see it, that's a clue that it could be a potential problem for clogging the tile in the future...not a good situation!!)
Anyway, you probably knew most of this but thought I'd share some of what I know.....