Replies

1. 
   dovetail97128 | May 03, 2007 03:28am | #1

   Jon S.,

   The drain should circle the house , including the down slope side. Tie the run across the down slope side into the two side runs using "Y"'s laid so that the water is led away from the house. Slope to either daylight or tie them onto a storm sewer at the outlet end..

   "Poor is not the person who has too little, but the person who craves more."...Seneca
2. 
   Inspector704 | May 03, 2007 03:53am | #2

   In our area, (North Carolina) the drain goes on all sides when the elevation of the crawl space grade is more than 12" below exterior grade.  The drain must extend to daylight or a storm drain, never to the sanitary sewer. 

1. 
   user-144543 | May 03, 2007 06:33am | #3

   Thanks.  I kind of thought so, but needed to make sure.

2. 
   user-144543 | May 03, 2007 06:40am | #4

   Does the drain need to go under the driveway slab and the front steps?

1. 
   Inspector704 | May 04, 2007 03:49am | #21

   No

3. 
   fingersandtoes | May 03, 2007 08:01am | #5

   "but does the drain go on top of the footing all the way around the house,"

   The drain tile goes beside the footing, not on top.

1. 
   user-144543 | May 03, 2007 02:13pm | #7

   Is the pipe slotted all the way around or just half way. It seem if I were to use a 100% sloted slotted pipe, that the water would just seep out the bottom back on to the base of the foundation. So they make a pipe that is slotted around half the pipe?

1. 
   Snort | May 03, 2007 02:27pm | #8

   one other thing, when running from the perimeter drain to daylight, unless you are absolutely, positively ,never, ever going to run any kind of equipment over the line, go with at least schedule 40 pvc...don't ask me how I know this<G> Outside of the gates the trucks were unloadin',

   The weather was hot, a-nearly 90 degrees.

   The man standin' next to me, his head was exploding,

   Well, I was prayin' the pieces wouldn't fall on me.

2. 
   Piffin | May 03, 2007 02:30pm | #9

   With perforated drain, the holes go in the lower portion, at four o'clock and eigtht o'clock. Withthe cheaper flex elephant hose drain line, the slots are all the way around because you cannot control which way it lays as you flex it into place.With either, you need to surrond it in clean stone and protect it from fines.
   If you put the holes up, the fines willcollect in the bottom and silt in the piupe sooner.
   Doing it right with holes down, means that hydro-static pressure lifts the water into the drain line while the fines stay out. The line is a channel that provides the water someplace to go, other than into your house. 

    

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1. 
   user-144543 | May 03, 2007 02:56pm | #10

   Where do you get the pipe with the perferations on one side?. They dont sell that at the local HD/Lowes. Thanks

1. 
   Piffin | May 03, 2007 03:17pm | #11

   Every lumberyard I deal with has lifts of schedule 20 in stock. 

    

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2. 
   BillHartmann | May 03, 2007 03:45pm | #14

   "Every lumberyard I deal with has lifts of schedule 20 in stock."Exactly what is that. Never run across any..
   .
   A-holes. Hey every group has to have one. And I have been elected to be the one. I should make that my tagline.

3. 
   Piffin | May 03, 2007 04:26pm | #16

   I just call and order 4" schedule 20 perforated or unperforated as needed.I that it is officially an HDPE - black inside and white outside. Has the female conection collar. 

    

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4. 
   BillHartmann | May 03, 2007 07:42pm | #17

   I had a long reply with links about how that could not be HDPE pipe and ask for the markings on the pipe. But then found a reference on NDS that mentioned another type of pipe ASTM F810 and I think that is what you are using. From that reference I think that is is only used in certain regions.All of the HDPE piping that I have seen has either been the corregated or very heavy walled stuff.http://www.hancor.com/product/smoothwall.html"Smoothwall pipe, is available in 10' (3m) lengths; 3", 4" and 6" (75, 100 and 150mm) diameters, and joins with simple, secure bell-and-spigot connections. The pipe is made with a white, high density polyethylene layer around a black polyethylene core to form a lightweight pipe with excellent beam stiffness.""The pipe provides for safe, easy, efficient installations without breaking, splitting or cracking, and is more impact-resistant that PVC, ABS or styrene."But I could not find any refenerence to it being Sch 20. The HDPE can't be glued so it use a gasketed hub connection.The SDR 35 and S&D can be solvent welded, but also are available with similar gasketed connections.
   .
   .
   A-holes. Hey every group has to have one. And I have been elected to be the one. I should make that my tagline.

5. 
   Piffin | May 03, 2007 08:23pm | #18

   Well Bill, I took a walk out to the shop and found a scrap with the following;
   3000 triple wall HDPE and then more that is scraped or faded. I'd have to run out to one of the jobs to read more....Maybe schedule twenty is a local misnomer that everyone just understands here. http://www.ads-pipe.com/pdf/en/Triple_Wall.pdf
   These phots look like it 

    

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6. 
   BillHartmann | May 03, 2007 08:54pm | #19

   http://www.ads-pipe.com/en/product.asp?productID=179It appears it be a version of the F810 smoothwall pipe.But I could not find any spec sheets on it, just the sell sheets that indicates that it will mate with S&D fittings.The only sch 20 that I have ever heard of is for central vac piping..
   .
   A-holes. Hey every group has to have one. And I have been elected to be the one. I should make that my tagline.

7. 
   Snort | May 03, 2007 09:33pm | #20

   We have schedule 20, but it's bell-ended, flimsy as paper, and won't couple to anything else without a fernco...but, it is cheap<G> Outside of the gates the trucks were unloadin',

   The weather was hot, a-nearly 90 degrees.

   The man standin' next to me, his head was exploding,

   Well, I was prayin' the pieces wouldn't fall on me.

8. 
   JimB | May 03, 2007 03:33pm | #12

   You might ask for "drainfield pipe".  Typically, septic systems are designed with holes (not slits) only in half the diameter. 

9. 
   Piffin | May 03, 2007 03:35pm | #13

   http://www.lowes.com/lowes/lkn?action=productList&N=0&Ntk=i_products&Ntt=perfprated%20drainLooks like Lowes carries it in my state. I use 4" # 20 that looks like the 3" pictured.
   The first pictured here looks like #40 to me
   The corrugated stuff at Lowes shows as only a 100' roll which I discovered when I noticed how cheap the price was. I am used to paying more like $200 or so for corrugated. It will collapse and crush easy so I only use it in rare circumstances or where it is a temporary thing.
   Typicalis sch 20 around footing and transition to 40 where it leads away.Keep that daylighgt drain end clean too.My BIL just had a 12" flood in basewment because the end of his got cloaked with deis and grass growing up into it.
   I had to replace the end of another one for somebody last week. The crawl space drain used to empty so fast you could see it swirl. They drove over it doing some "landscaping" and lost the end sometime in the last three years. The backup flooded the crawl and killed the boiler. That got expensive. 

    

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10. 
    BillHartmann | May 03, 2007 04:06pm | #15

    There are FOUR STANDARD drain pipes.Black flex that comes in long rolls. Can't remember the generic name.Sch 40 PVC DWV This is the same stuff that is installed in side for drains and vents.Sch series piping has constant wall thickness, based on the Sch number, of reguardless of diameter and it's pressure rating is less for larger pipes.SDR series pipes comes in different ratios of wall to diameter and the wall thickness changes so that pressure rating is the same for different size pipe of the same diamater. There are a number of differen SDR series.But for residential drain application all you will see is SDR-35Then there is "Sewer and Drain Pipe". It is designated ASTM D2735 (IIRC).The S&D has the lightest wall thickness of the ridgit pipe, then SDR-24, then Sch 40. Btu S&D is the only one that has a crush rating. But I hve never been able to find out how it is tested and if that is for a section of pipe or per foot (inch)?In the 4" size S&D and SDR-35 have the same OD and can use the same fittings. Sch 40 has a slightly different diameter and requires an adaptor to go between them.Both S&D and SDR-35 come both solid and preforated and both the local Lowes and HD has both. I don't remember if they have sch 40 in solid or not.At Lowes the S&D and SDR-35 are in the same ilse with the sch 40 along with the S&D and SDR-35 fitings. Across the ilse is the SCh 40 fitting along with all of the other plumbing fittings..
    .
    A-holes. Hey every group has to have one. And I have been elected to be the one. I should make that my tagline.

4. 
   Piffin | May 03, 2007 01:18pm | #6

   All the way around the house - We put it at the base of the footing, not on top of it.

    

    

   Welcome to the
   Taunton University of Knowledge FHB Campus at Breaktime.
    where ...
   Excellence is its own reward!