Any experts on Drain Tile - Sump pump

[SVT3267]

Our home is new construction, occupied for less than 1 year. I've noticed that all water entering the sump pit enters from below the pit/slab. In other words, no water flows in from the perimeter drain tile. My sump pump works fine and I have no flooding issues or water in my basement.

Questions/concerns
1. Is it normal for water to enter the sump pit from below the slab?

2. Other than a crushed, damaged or disconnected drain tile, what would cause no water to enter via the drain tile?

[concretemasonry]

If you have no water entering from above the drain tile invert and there is no water on the floor. It sounds like a high water table (possibly seasonal) that could be below the bottom of the drain tile and your sump has opening in the bottom and rock under it to help reduce the effects of a rising water table.

It always helps tp look at your drainage around the home and makes sure you have long (8'+) extensions to keep any water from the roof away from the area that was excavated for the foundation construction.

Dick

[SVT3267]

If you have no water entering from above the drain tile invert and there is no water on the floor. It sounds like a high water table (possibly seasonal) that could be below the bottom of the drain tile and your sump has opening in the bottom and rock under it to help reduce the effects of a rising water table.

It always helps tp look at your drainage around the home and makes sure you have long (8'+) extensions to keep any water from the roof away from the area that was excavated for the foundation construction.

Dick
Thanks for the reply. What do you mean by drain tile invert? I have no water on the floor. Do all sumps have opening on bottom?

[concretemasonry]

The invert is the elevation of the botom of the inside of the pipe.

Dick

[Tom_E]

Dick,
I was reading the post and your reply and have a question for you about same. You ref 8' + extentions. Do you mean those extentions go on what I know as a "French Drain" to insure that the runoff water is moved away from the building ? Sorry if this appears to be a stupid question. Tom

[concretemasonry]

The extensions should go on your downspouts to get the rainwater away from your home to where it will drain away.

You should never tie your downspouts into a drain tile. If you do that a rain storm can all go into your drain tile and flood your basement. Your drain tile should drain to "daylight" away and downhill from your house or be pumped out. Again, your sump discharge should be well away from your home or the water will come back in through the drain tile.