Home>Discussions>PLUMBING>Is increasing the drop in this drainage system worth the effort?
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resis
Is increasing the drop in this drainage system worth the effort?

http://imgur.com/a/XqVnD

My sump pump and yard drainage have successfully protected my basement for seven years. I have not had a serious problem yet. However, storms here can be intense, and there have been 8-10 storms that have caused my sump pump to come on about once per minute for 2 or 3 straight days. That is, when it has to work, the pump works harder than I would like it to.

If it's not much effort or expense, I'd like to make adjustments that help water get away from my house faster. Reshaping the yard is not an option (I already have reshaped some areas, and I can't help the fact that my neighbors' properties are a little higher than mine.)

I have an idea that is shown in the image to which I've linked above. To understand my question, please compare the current arrangement to the possible arrangement. My biggest frustration with my current arrangement is that the discharge pipe from the house is only a couple of inches off the ground. The drop is modest enough that, when the pump is working, water only gently exits at the swale (30 feet away) instead of gushing out. Perhaps if there was a larger drop in the pipe pathway (e.g., a drop of 2 feet instead of 1) the water would exit more quickly and forcefully.

I estimate that I could build the possible arrangement in about eight hours. My sump pump will easily cope with pushing the water 12 inches higher, so that doesn't worry me.

But in your opinion, is the possible arrangement worth the effort? Will adding an additional 12 inches between the highest point and the lowest point in the pipe pathway make much difference in forcing the water away from the house?

No matter what method I use, I get errors when attempting to attach the image. So I hope the imgur url works instead.

Thanks for your opinions.

bill
Re: Is increasing the drop in this drainage system worth the effort?

questions
1) does the black corrugated pipe have a slope over its whole length
2) is the black corrugated pipe sealed or does it have holes in it like a weeping field.
3) what is the sizes of all the pipes
4) what is the lift of the pump from base to top of the pipe
5) what is the horsepower of said pump.

Once we have this info we can answer your question

resis
Re: Is increasing the drop in this drainage system worth the effort?

1) It is wide-smile shaped, but very long, and the end is about 12" lower than the beginning.
2) Alternates sealed and perforated.
3) The PVC that exits the house is about 1.5" wide. The black corrugated is about 4" wide.
4) About 9 feet.
5) 1/3 HP. During testing a few years ago, I noticed the water shoots out of the PVC forcefully.

Thanks for your opinion.

bill shack wrote:

questions
1) does the black corrugated pipe have a slope over its whole length
2) is the black corrugated pipe sealed or does it have holes in it like a weeping field.
3) what is the sizes of all the pipes
4) what is the lift of the pump from base to top of the pipe
5) what is the horsepower of said pump.

Once we have this info we can answer your question

resis
Re: Is increasing the drop in this drainage system worth the effort?

Here is that link to the image again:

http://imgur.com/a/XqVnD

Thanks for your opinions.

bill
Re: Is increasing the drop in this drainage system worth the effort?

Thank for answering my 5 questions.
the one thing that bothers me is if you have perforated pipe as part of the 4 inch drainage. it is possible for your pump to start and the water flows in to the 4 inch perforated pipe then leaks out into the ground and down then back into the house only o be pumped yet again. I would suggest you did up several feet of the 4 inch pipe and replace it with solid not perforated pipe.
as to the gently exits at the swale, the discharge from a pressurized 1 1/2 pipe and 4 inch pipe would of course be very different . the flow from a 4 inch pipe would be slow and gentle. but would carry the same quantity of water . I would leave it as is .

Bill

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