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#1
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sump drain pipe on flat ground
I need to run my sump pump discharge to a drainage ditch along the
road. The discharge exits the house at 1.5' above ground, but the grade is almost flat... it's 100' from the house to the drainage ditch, and the ground itself only loses a few inches along the way according to an excavator (measured to the bottom of the drainage ditch). I currently have a 4" black flex pipe just laying on the ground, running from the house to the drainage ditch. It works OK (except in the winter), but is not a permanent solution for many reasons. Perhaps the obvious solution is to bury a drain pipe. The path of the drain pipe will cross (and likely run parallel with) several underground utilities including electric, phone, and cable - so digging down several feet to avoid freezing is not an option. Besides, I'd be leary of this approach anyways since the pump would have to lift the water back up to ground level at the end of the run. I've been told by an excavator to bury a 1.5" PVC pipe, just beneath the surface, and try to maintain downhill or at least level for the entire run. I would probably incorporate a vacuum breaker where the pipe comes out of the house, to help gravity do its job, as well as providing a secondary outlet connection for winter use or if the PVC gets blocked. Does this sound like a good approach, given the circumstances? I'm concerned the PVC would freeze and break if it doesn't drain completely. I'm also concerned about the pipe "heaving" up to the surface as a result of freeze/thaw. A neighbor says to bury 1.25" black flex hose a foot down, like he did... but he has much more vertical drop than I do, and I'd think flex hose would be more susceptible to having a lowspot than 10' sections of PVC. Any comments/suggestions are welcome. Note... this is in southern ohio, with clay soil and a high water table if that makes any difference. thanks in advance! |
#2
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sump drain pipe on flat ground
I'm in Northern Wisconsin and we have a situation and a grading drop almost
the same as yours, only spread out over twice that distance. Our sump runs regularly from thaw til August. It pumps ground water when the table gets high, and very very occasionally, surface water. Part of the price you pay for living by the river. Anyway, we buried 3" PVC pipe. Part of it is flexible to make the bend around from the back of the house. It's only 12" underground. It has never frozen, even though our hard freeze is 4 -5 months long. Although the pitch is minimal, it is a pitch! We rigged a "Y" formation of PVC at its outlet at the house in case it ever froze due to a cold snap during its running season. The "open" end of the Y is connected to a collapsible tube of plastic, similar to those collapsible downspouts. If the main pipe were ever to freeze or become blocked, it would unroll itself out into the yard and flow down to the ditch naturally. We've tested it... and it really does work. The power of the 1/2 horse pump in the pit is enough to get that water up 8 feet to ground level and out to the ditch, about 200 feet away, with no add'l help. And I'm in Northern Wisconsin. In southern Ohio, I'd be even less concerned with it freezing...how often does it run when the temp is below freezing? -Oldy "dakota" wrote in message om... I need to run my sump pump discharge to a drainage ditch along the road. The discharge exits the house at 1.5' above ground, but the grade is almost flat... it's 100' from the house to the drainage ditch, and the ground itself only loses a few inches along the way according to an excavator (measured to the bottom of the drainage ditch). I currently have a 4" black flex pipe just laying on the ground, running from the house to the drainage ditch. It works OK (except in the winter), but is not a permanent solution for many reasons. Perhaps the obvious solution is to bury a drain pipe. The path of the drain pipe will cross (and likely run parallel with) several underground utilities including electric, phone, and cable - so digging down several feet to avoid freezing is not an option. Besides, I'd be leary of this approach anyways since the pump would have to lift the water back up to ground level at the end of the run. I've been told by an excavator to bury a 1.5" PVC pipe, just beneath the surface, and try to maintain downhill or at least level for the entire run. I would probably incorporate a vacuum breaker where the pipe comes out of the house, to help gravity do its job, as well as providing a secondary outlet connection for winter use or if the PVC gets blocked. Does this sound like a good approach, given the circumstances? I'm concerned the PVC would freeze and break if it doesn't drain completely. I'm also concerned about the pipe "heaving" up to the surface as a result of freeze/thaw. A neighbor says to bury 1.25" black flex hose a foot down, like he did... but he has much more vertical drop than I do, and I'd think flex hose would be more susceptible to having a lowspot than 10' sections of PVC. Any comments/suggestions are welcome. Note... this is in southern ohio, with clay soil and a high water table if that makes any difference. thanks in advance! |
#3
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sump drain pipe on flat ground
I'm in central ohio, and my pipe is very similar to what you described its
only buried around 3 or 4 inches under the grass and dosent freeze, we get ALOT of water pumped out during spring-fall (poorly built house in a sub-division), but once the ground freezes water cant get down into basement anyway unless you have a spring coming up under your basement floor. As long as their is a little bit of a grade water should not stay in pipe and will have all run out between pump last runs and ground gets around to freezing down to where the pipe is in the winter. "Oldylocks" no wrote in message ... I'm in Northern Wisconsin and we have a situation and a grading drop almost the same as yours, only spread out over twice that distance. Our sump runs regularly from thaw til August. It pumps ground water when the table gets high, and very very occasionally, surface water. Part of the price you pay for living by the river. Anyway, we buried 3" PVC pipe. Part of it is flexible to make the bend around from the back of the house. It's only 12" underground. It has never frozen, even though our hard freeze is 4 -5 months long. Although the pitch is minimal, it is a pitch! We rigged a "Y" formation of PVC at its outlet at the house in case it ever froze due to a cold snap during its running season. The "open" end of the Y is connected to a collapsible tube of plastic, similar to those collapsible downspouts. If the main pipe were ever to freeze or become blocked, it would unroll itself out into the yard and flow down to the ditch naturally. We've tested it... and it really does work. The power of the 1/2 horse pump in the pit is enough to get that water up 8 feet to ground level and out to the ditch, about 200 feet away, with no add'l help. And I'm in Northern Wisconsin. In southern Ohio, I'd be even less concerned with it freezing...how often does it run when the temp is below freezing? -Oldy "dakota" wrote in message om... I need to run my sump pump discharge to a drainage ditch along the road. The discharge exits the house at 1.5' above ground, but the grade is almost flat... it's 100' from the house to the drainage ditch, and the ground itself only loses a few inches along the way according to an excavator (measured to the bottom of the drainage ditch). I currently have a 4" black flex pipe just laying on the ground, running from the house to the drainage ditch. It works OK (except in the winter), but is not a permanent solution for many reasons. Perhaps the obvious solution is to bury a drain pipe. The path of the drain pipe will cross (and likely run parallel with) several underground utilities including electric, phone, and cable - so digging down several feet to avoid freezing is not an option. Besides, I'd be leary of this approach anyways since the pump would have to lift the water back up to ground level at the end of the run. I've been told by an excavator to bury a 1.5" PVC pipe, just beneath the surface, and try to maintain downhill or at least level for the entire run. I would probably incorporate a vacuum breaker where the pipe comes out of the house, to help gravity do its job, as well as providing a secondary outlet connection for winter use or if the PVC gets blocked. Does this sound like a good approach, given the circumstances? I'm concerned the PVC would freeze and break if it doesn't drain completely. I'm also concerned about the pipe "heaving" up to the surface as a result of freeze/thaw. A neighbor says to bury 1.25" black flex hose a foot down, like he did... but he has much more vertical drop than I do, and I'd think flex hose would be more susceptible to having a lowspot than 10' sections of PVC. Any comments/suggestions are welcome. Note... this is in southern ohio, with clay soil and a high water table if that makes any difference. thanks in advance! |
#4
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sump drain pipe on flat ground
Thanks for the replies. My pump does run occasionally (once or twice
a day I suppose) even when we have a hard freeze, I guess because of the natural water table in the area. It sounds like I'm on the right track. My next question... is it better to connect the pipe sections together with cemented couplers, or should I use those rubber couplers with hose clamps? I realize the cemented couplers are probably best since they won't ever leak, and they're cheaper too - but I'm wondering if the rubber couplers would make installation easier (ie, if I need to remove a section to adjust the grade) as well as making repairs easier if a section breaks? "Tom Eller" wrote in message ... I'm in central ohio, and my pipe is very similar to what you described its only buried around 3 or 4 inches under the grass and dosent freeze, we get ALOT of water pumped out during spring-fall (poorly built house in a sub-division), but once the ground freezes water cant get down into basement anyway unless you have a spring coming up under your basement floor. As long as their is a little bit of a grade water should not stay in pipe and will have all run out between pump last runs and ground gets around to freezing down to where the pipe is in the winter. |
#5
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sump drain pipe on flat ground
We used rubber sections in every non-buried join that we could because it
really absorbs some of the sound (whooshing, motor hum, etc.). We also bought a check valve that uses a ball instead of a flap (no SLAP noise.) Not cheap but nice and quiet. Anyway, all our buried joins are cemented elbows. There is flexible PVC available for this, too. But we didn't use the flex underground and this was our thought: Flex PVC or rubber couplers could get squished/crushed shut, pierced by a root or gnawed by some creature. It's not likely, not easy, but it is possible. Plus, we couldn't predict or find out anywhere how well those rubber sections would stand up to the effects of being buried for a long period of time. I kept thinking about how some rubber becomes brittle with age. I suspect as sprawl makes for more houses built over high water tables (where houses ain't s'posed to be), the devices for water removal will become more and more sophisticated. People will be looking at houses like yours and mine in wonder and amazement at the craftsmanship of our sump systems... heh heh. People in my area learn to live with pumps - that's the price we pay for living very near to rivers and/or at bases of mountains. Every time I see stories on the news about drought in the plains, I imagine the feasibility of miles and miles of that ribbed black tubing stretching from my house to the affected area. If it works for oil?????? -Oldy "dakota" wrote in message om... Thanks for the replies. My pump does run occasionally (once or twice a day I suppose) even when we have a hard freeze, I guess because of the natural water table in the area. It sounds like I'm on the right track. My next question... is it better to connect the pipe sections together with cemented couplers, or should I use those rubber couplers with hose clamps? I realize the cemented couplers are probably best since they won't ever leak, and they're cheaper too - but I'm wondering if the rubber couplers would make installation easier (ie, if I need to remove a section to adjust the grade) as well as making repairs easier if a section breaks? "Tom Eller" wrote in message ... I'm in central ohio, and my pipe is very similar to what you described its only buried around 3 or 4 inches under the grass and dosent freeze, we get ALOT of water pumped out during spring-fall (poorly built house in a sub-division), but once the ground freezes water cant get down into basement anyway unless you have a spring coming up under your basement floor. As long as their is a little bit of a grade water should not stay in pipe and will have all run out between pump last runs and ground gets around to freezing down to where the pipe is in the winter. |
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