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  1. #1
    Gerry Wang's Avatar
    Gerry Wang Guest

    Thumbs up weeping tile at walkout basement

    I am building a new house and have weeping tile installed around foundation. However, the walkout is deeper then other place so there likely will be a water pool. What to do to deal with the water at walkout area where is ~4' deeper?

    thanks in advance.

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  2. #2
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    Default Re: weeping tile at walkout basement

    Quote Originally Posted by Gerry Wang View Post
    I am building a new house and have weeping tile installed around foundation. However, the walkout is deeper then other place so there likely will be a water pool. What to do to deal with the water at walkout area where is ~4' deeper?

    thanks in advance.
    If you are building a new house in a "pool" you have bigger grading problems to consider.

    The beatings will continue until morale has improved. mgt.

  3. #3
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    Default Re: weeping tile at walkout basement

    Quote Originally Posted by Gerry Wang View Post
    I am building a new house and have weeping tile installed around foundation. However, the walkout is deeper then other place so there likely will be a water pool. What to do to deal with the water at walkout area where is ~4' deeper?

    thanks in advance.
    That is a poor design! You need a drain to get rid of the water.

    Scott Patterson, ACI
    Spring Hill, TN
    www.traceinspections.com

  4. #4
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    Default Re: weeping tile at walkout basement

    Your post indicates that you already know there is a problem. It will take more than a 1-2 sentence description to design a fix. But based upon the information you have provided, my suggestion is to call in an engineer NOW to evaluate what is going on and design whatever is necessary to resolve the anticipated problem.

    Whatever the cost, I assure you it will cost less to do it now than to wait until the construction is complete.

    Steven Turetsky, UID #16000002314
    homeinspectionsnewyork.com
    eifsinspectionsnewyork.com

  5. #5
    Gerry Wang's Avatar
    Gerry Wang Guest

    Default Re: weeping tile at walkout basement

    What is the typical solution for walkout basement? the walkout area is only for stairs and small, but is 4' deeper than the house footing. A step footing is used there.


  6. #6
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    Default Re: weeping tile at walkout basement

    Quote Originally Posted by Gerry Wang View Post
    What is the typical solution for walkout basement? the walkout area is only for stairs and small, but is 4' deeper than the house footing. A step footing is used there.
    If it is a landing with stairs that go up 4' to ground level then it needs a drain at the bottom in the landing.

    Scott Patterson, ACI
    Spring Hill, TN
    www.traceinspections.com

  7. #7
    Gerry Wang's Avatar
    Gerry Wang Guest

    Default Re: weeping tile at walkout basement

    I have a drain there so it should be OK. I was worrying about there because I can put weeping tile around the house but not the walkout area due to the step footing.
    My foundation contractor suggested me to put more crashed stone there to let water go down to the footing at walkout area but I feel that will create a pond there. I think I need to back fill with soil so not much water will go down there. It is better to let water to to the weeping tile then sum pump - and this maybe the only option for the extra water if no path to go down to walkout footing.

    Quote Originally Posted by Scott Patterson View Post
    If it is a landing with stairs that go up 4' to ground level then it needs a drain at the bottom in the landing.



  8. #8
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    Default Re: weeping tile at walkout basement

    Your basement floor is below the perimeter drain system? That is trouble. You can not rely on a sump pump to keep your basement dry when power is knocked out for days. Plan for weather extremes now while you can.
    I know you need a deep foundation in Ontario. That is why so many houses have basements. Is this building site on a steep slope? Why the stepped footing? Just a room for the furnace?
    The stairwell can be drained to a french drain in the back yard if it is below the city storm drain.
    I would not do it that way myself. In my rainy climate, we would go with a three foot crawlspace rather than dig a deep water hole under the house. The furnace goes in there on its side.
    What did the municipal inspector say?

    "Weeping tile" is the oldtimer's term for perimeter drains. Perforated PVC pipe for the footings, solid PVC for the storm drains, which can be shallower, but not connected.
    Don't use Big O ribbed black plastic pipe. It won't lay straight and it can collapse.

    John Kogel, RHI, BC HI Lic #47455
    www.allsafehome.ca

  9. #9
    Gerry Wang's Avatar
    Gerry Wang Guest

    Default Re: weeping tile at walkout basement

    Basement floor is above the perimeter drain system, so is the basement walkout floor, but the footing for basement walkout is lower. That is required by the code.
    As Scott mentioned, a drain will do the work there. Logically thinking, I agree. Will see what the inspector say.
    Quote Originally Posted by John Kogel View Post
    Your basement floor is below the perimeter drain system? That is trouble. You can not rely on a sump pump to keep your basement dry when power is knocked out for days. Plan for weather extremes now while you can.
    I know you need a deep foundation in Ontario. That is why so many houses have basements. Is this building site on a steep slope? Why the stepped footing? Just a room for the furnace?
    The stairwell can be drained to a french drain in the back yard if it is below the city storm drain.
    I would not do it that way myself. In my rainy climate, we would go with a three foot crawlspace rather than dig a deep water hole under the house. The furnace goes in there on its side.
    What did the municipal inspector say?

    "Weeping tile" is the oldtimer's term for perimeter drains. Perforated PVC pipe for the footings, solid PVC for the storm drains, which can be shallower, but not connected.
    Don't use Big O ribbed black plastic pipe. It won't lay straight and it can collapse.



  10. #10
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    Default Re: weeping tile at walkout basement

    Quote Originally Posted by Gerry Wang View Post
    I am building a new house and have weeping tile installed around foundation. However, the walkout is deeper then other place so there likely will be a water pool. What to do to deal with the water at walkout area where is ~4' deeper?

    thanks in advance.
    The other concern is resolving the issue of "frost penetration" below the walkout floor well. There are other acceptable "alternative" design solutions that can be utilized if the builder is familiar with the building code.

    In my opinion - The best place for the location of the perimeter drainage is below the slab and/or as close as possible to the bottom of the main house footings.

    I also subscribe in the belief that it's more practical to provide both an interior and exterior drainage sustem, at the time of construction as a backup plan. But that's just me - from a building designers perspective.


  11. #11
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    Default Re: weeping tile at walkout basement

    Here are two types of basement entries. Note the drain and insulation requirements dependent on type of entry.

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  12. #12
    S Young's Avatar
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    Default Re: weeping tile at walkout basement

    Have seen Form-A-Drain used for foundation/basement drainage.
    Form-A-Drain - CertainTeed

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  13. #13
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    Default Re: weeping tile at walkout basement

    If your drain is below the basement floor your fine. Just because it is called a foundation drain doesn't mean you have to drop it to your footing. The footing is dropped for frost not water. It does not hurt the footing to stay moist or wet. You want to keep any water lower than the basement floor. If you have a walkout, running the drain out to daylight is a good method. Just make sure you have pitch all the way on the pipe.

    Randy Gordon, construction
    Michigan Building Inspector/Plan Reviewer

  14. #14
    Paulo Amorim's Avatar
    Paulo Amorim Guest

    Default Re: weeping tile at walkout basement

    I was reading the questions about the weeping tile detail at the basement walkout and after registering I took a look at your details. I still don't understand what happened to the weeping tile at the walkout area. Further, your detail shows connecting the outside floor drain to the inside floor drainage system, some municipalities might not allow this because this drainage will add more water to the existing system thus causing problems down the road. I am really interested in knowing the correct way of doing the weeping tile at the walkout because any standing water will multiply the frost problems.


  15. #15
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    Default Re: weeping tile at walkout basement

    I believe they terminate the drainage tile on either side of the bulkheads (dead end them).
    The drain can also flow to a sump pump to exterior discharge and /or municipal drain. I don't see the volume of water as being overly critical, but for my liking I would install a covered entry way.


  16. #16
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    Columbus, OH
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    16

    Default Re: weeping tile at walkout basement

    Quote Originally Posted by Raymond Wand View Post
    Here are two types of basement entries. Note the drain and insulation requirements dependent on type of entry.
    What prevents cold air from entering the outside drain and coming into the building?


  17. #17
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    Lansdale, PA
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    Default Re: weeping tile at walkout basement

    I would continue the perimeter drain(s) (weeping tile) at the same elevation regardless of the fact the the footing is deeper at the walkout. Any water accumulating under the slab(s) will be collected in the drain(s) and drain to daylight or to a sump pump pit. That is typical practice in my area.


  18. #18
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    Default Re: weeping tile at walkout basement

    Put the interior floor drain on the other side of the trap.


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