Drain Tile Enough For This Job?

OneEntrepreneur

I put a bid in on this property to drain tile their back yard in several spots and run the tile into a single tube and then out to their ditch. Their main concern is water leaking into the basement.. I took a few pictures. I was informed they put a sump pump in their yard and ran 1000+ gallons a day out of their back yard for 3 days straight. The more I look at the job the more I wonder if drain tile will be enough. I'm wondering if the ground would ultimately get so saturated that the majority of water would just run over the drain tile into the back of the yard and eventually back down into their basement.
I've already verified proper operation of their basement drain tile. Everything in the basement checks out. It appears the drain tiles in the basement are just overworked.

Note: I can't post pictures of the backyard here or provide I link to where I uploaded them, so I'll try to find an easier way to show you the pics...
Here you go.. You have to copy and paste the following to see the pictures.
cardomain.com/ride/2195944/4

JDavis21835

I would almost consider installing a catch basin and grading for drainage. I had a similar situation in my back yard. Years ago a neighbor along the line raised their backyard. Fine and dandy, but the problem with that was they were at the end of the line, and 5 other backyards drained through their backyard. When I bought my house there would be water standing in everyones backyard. I precast my own catch basin, installed it, had added a 6 inch storm line to a catch basin in my front yard. I also added about 100 feet of drain tile as well. Now everyones backyard drys up within 8 hours of a heavy rain stopping.

What is the soil type? Around here we have a high water table. It doesnt help that there is a foot and a half of clay/topsoil, then two feet of sand, then back to clay. All the water runs in the sand seam. Since sand and peastone is used to backfill around foundations, all the water runs through the sand seem, to the footing tile, that is pumped back outside with the sump pump. Thats why I added the tile, to catch as much water and get it headed to the county drain as possible.

dayexco

as JDavis said, you need to regrade the property, and 'nput in an area drain to get the water away from the house so the standing water doesn't perc and overload your drain tiles. tile will have enough problem keeping up with water already in the soil, then have to contend with what's sitting on top adds to the headache

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someday, i'll be as patient as Nick.

OneEntrepreneur

The soil is typically pretty soft in our area for at least 2-3 feet down... The water is pretty saturated, so hardness is not to big of a deal. Plus I can always rent equipment on a Friday and use it for the weekend....It seems that for whatever reason that some soil in this area is like clay. I'd be guessing the soil by the house and near the concrete is pretty hard, but the soil in the back yard is pretty much compacted dirt at least a few feet down.

I'm pretty sure I have the job, but think I'm going to rebid the job..
I'm thinking about getting rid of the drain tile estimate and running 5 basins into a solid tube..4 basins at the property line and one more in the back yard....Also maybe regrading the yard slightly down a few inches from the house to about 25 feet from the house...Nothing special....Maybe a little fill dirt and new sod...I haven't done much trenching work, so I'm kind of green in irrigation.. Seems liike common sence, but I'm not sure if basins into drain tile or basins into solid tubing would be best...If the basins get overloaded and I have drain tiles then the water overflows from the top. If I install basin into solid pipe, the water that goes around the basin won't have any drain tile to go into.

concretemasonry

You put in a bid without knowing how bad the problem is and what the actual conditions are? I saw a number of "guesses" and "wonderings" in your post.

Without any good information you will only get guesses and not educated opinions.

The soil near the house is probably not as "hard" as you think because it is usually not compacted or the type that can be compacted wel.

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Dick

Engineer, designer and consultant recently active domestically and internationally on construction and design in about 35 countries.