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#1
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french drain design advice sought
"Chris Jarshant" wrote in message ... We live on a slightly sloped lot, and the water from the uphill lot flows down toward my house. This wasn't a problem until recently, we put in a new pool and the re-grading on the side of the house has caused the water to pool against the house now during moderate to heavy rains. First, I assume this will be a problem long term, because of termites? When it rains moderately, a pool forms against the house at a max depth of 6". This pool drains in an hour or so after it stops raining. We have a concrete/stucco house but the second floor is mostly wood and of course the interior walls and studs are wood/drywall. No basement (it is a concrete slab house). Will the cyclic pooling during rains dilute the termite treatments? I get a "booster" under-the-slab-injections every 5 years along with regular spraying once a year and inspections. The two ideas I have so far a 1. Lay a drain pipe (would have to be about 50' long and downward sloping) to drain the water from against the house to the back of the lot, to a spot where it can freely flow downhill and off the lot. 2. Build a "french drain" maybe 10' from the house (between my house and the uphill house). I was going to bury a 55 gal drum, filled with rocks, with a solid top and a perforated bottom (using steel fencing). Then, run a two or three drain pipes from against the house, into the top of the drum, allowing water to drain immediately from against the house (and the surrounding pool that it is currently forming during heavy rain), into the rock-filled drum, and out the bottom into the earth. #1 sounds like not so much digging, but a pain to get a 50' run of pipe to slope down enough. How much does it have to slope? and will it maintain that slope over time (I live in central florida, no frost line here). #2 sounds like a lot of digging, but no long lines of drain pipe (10' at most). But also sounds more expensive to get 55 gallons of rocks. Should I do anything? If so, should I do the long-pipe option or the buried-drum option? Call up pool company and/or landscape company and bitch. Whoever does the finish grade is supposed to WATCH for stuff like this, and at least tell the owner. If the ponding was in an area of yard they didn't reshape, then they should have pointed it out to you, and discussed possible options. I'd regrade yard and add a swale somehow, if possible, before I screwed around with drains in a grassy area. Parking lot and driveway drains are bad enough, but drains in turf clog up regularly. And yes, you need to do SOMETHING. Anywhere water ponds against wood on a regular basis, the wood will fail at some point. Termites, mold, simple rot, take your pick. A good lanscape company will know what to do- they fix stuff like this all the time. aem sends... |
#2
Posted to alt.home.repair
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french drain design advice sought
We live on a slightly sloped lot, and the water from the
uphill lot flows down toward my house. This wasn't a problem until recently, we put in a new pool and the re-grading on the side of the house has caused the water to pool against the house now during moderate to heavy rains. First, I assume this will be a problem long term, because of termites? When it rains moderately, a pool forms against the house at a max depth of 6". This pool drains in an hour or so after it stops raining. We have a concrete/stucco house but the second floor is mostly wood and of course the interior walls and studs are wood/drywall. No basement (it is a concrete slab house). Will the cyclic pooling during rains dilute the termite treatments? I get a "booster" under-the-slab-injections every 5 years along with regular spraying once a year and inspections. The two ideas I have so far a 1. Lay a drain pipe (would have to be about 50' long and downward sloping) to drain the water from against the house to the back of the lot, to a spot where it can freely flow downhill and off the lot. 2. Build a "french drain" maybe 10' from the house (between my house and the uphill house). I was going to bury a 55 gal drum, filled with rocks, with a solid top and a perforated bottom (using steel fencing). Then, run a two or three drain pipes from against the house, into the top of the drum, allowing water to drain immediately from against the house (and the surrounding pool that it is currently forming during heavy rain), into the rock-filled drum, and out the bottom into the earth. #1 sounds like not so much digging, but a pain to get a 50' run of pipe to slope down enough. How much does it have to slope? and will it maintain that slope over time (I live in central florida, no frost line here). #2 sounds like a lot of digging, but no long lines of drain pipe (10' at most). But also sounds more expensive to get 55 gallons of rocks. Should I do anything? If so, should I do the long-pipe option or the buried-drum option? Thanks! cj |
#3
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french drain design advice sought
On Jul 2, 8:32 pm, Chris Jarshant wrote:
We live on a slightly sloped lot, and the water from the uphill lot flows down toward my house. This wasn't a problem until recently, we put in a new pool and the re-grading on the side of the house has caused the water to pool against the house now during moderate to heavy rains. First, I assume this will be a problem long term, because of termites? When it rains moderately, a pool forms against the house at a max depth of 6". This pool drains in an hour or so after it stops raining. We have a concrete/stucco house but the second floor is mostly wood and of course the interior walls and studs are wood/drywall. No basement (it is a concrete slab house). Will the cyclic pooling during rains dilute the termite treatments? I get a "booster" under-the-slab-injections every 5 years along with regular spraying once a year and inspections. The two ideas I have so far a 1. Lay a drain pipe (would have to be about 50' long and downward sloping) to drain the water from against the house to the back of the lot, to a spot where it can freely flow downhill and off the lot. 2. Build a "french drain" maybe 10' from the house (between my house and the uphill house). I was going to bury a 55 gal drum, filled with rocks, with a solid top and a perforated bottom (using steel fencing). Then, run a two or three drain pipes from against the house, into the top of the drum, allowing water to drain immediately from against the house (and the surrounding pool that it is currently forming during heavy rain), into the rock-filled drum, and out the bottom into the earth. #1 sounds like not so much digging, but a pain to get a 50' run of pipe to slope down enough. How much does it have to slope? and will it maintain that slope over time (I live in central florida, no frost line here). #2 sounds like a lot of digging, but no long lines of drain pipe (10' at most). But also sounds more expensive to get 55 gallons of rocks. Should I do anything? If so, should I do the long-pipe option or the buried-drum option? Thanks! cj Ponding water against the house is not a good thing...best to sove the problem now rather than letting the damage occur. Your contractor should have avoided this problem, that's why hired him ......experience. #1 sounds like not so much digging, but a pain to get a 50' run of pipe to slope down enough. Actually the 50' run depending the lay of the land is going to be slightly more to 2 or 3 times as much digging as the 55 gallon drain soltuon. How much does it have to slope? Ideally about 1/4" per foot so you need ~12" you could get away with less and will it maintain that slope over time (I live in central florida, no frost line here)., Unless you live in a swamp, once carefully placed & the soil tamped back in, the drain line will maintain position just fine. Yes, you have to do something A properly placed 50' drain line with be more work but have a longer more trouble free working life. 55 gallons of rocks (actually you want smooth round stones, crushed rock or angluar "gravel" tends to pack itself) even by the bag would only be about $75 55 gallons drum will hold about 800lbs of stones I estimate $4.5 per 50 lb bag.....but you should be able to buy bulk rocks cheaper than bagged. cheers Bob |
#4
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french drain design advice sought
On Mon, 02 Jul 2007 22:32:32 -0500, Chris Jarshant
wrote: We live on a slightly sloped lot, and the water from the uphill lot flows down toward my house. This wasn't a problem until recently, we put in a new pool and the re-grading on the side of the house has caused the water to pool against the house now during moderate to heavy rains. SNIP... Should I do anything? Yes If so, should I do the long-pipe option or the buried-drum option? Try the regrade-the-lot option |
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