Perimeter Drain install depth basement vs crawspace

[billikenn]

Looking at purchasing a house in NE Ohio, its got a full basement under the main house, and a crawl space under an addition in the back of the house.

would the drain tile need to be installed below the footer of the basement the whole way around the house perimeter.

There is a section of basement exterior wall that is cut off from the majority of the other exterior walls. Its got the crawl space on one end and garage on the other, how do you drain that area? All i can think is that they will install the drainage tile at the basement depth around the crawl space to reach that area as well?

The house once had a finished basement, but its currently gutted. Heavy rain flooded it.

 

[Ian Gills]

My basement only has drainage on three of its four walls.

 

[Sponsor]

 

[Drick]

Looking at purchasing a house in NE Ohio, its got a full basement under the main house, and a crawl space under an addition in the back of the house.

would the drain tile need to be installed below the footer of the basement the whole way around the house perimeter.

There is a section of basement exterior wall that is cut off from the majority of the other exterior walls. Its got the crawl space on one end and garage on the other, how do you drain that area? All i can think is that they will install the drainage tile at the basement depth around the crawl space to reach that area as well?

The house once had a finished basement, but its currently gutted. Heavy rain flooded it.

Well since you are looking at purchasing the house and don't currently own it you should assume the basement will never be dry. If your plan is to use the basement as living space find another house.

Now to answer your question, when installing drainage tiles they are supposed to be installed along side of the footer. Your basement floor is poured over the footer so the drainage tile is just below the floor height wise. If you are installing a new drainage tile you cannot install it below the footer for either the house or the crawl space. Digging below the footer, while directly along side it, could cause the foundation to collapse.

If part of a house sits on a slab or crawl space and the rest has a full basement, normally the part on the slab/ crawl space has no drainage tiles installed around it.

So essentially you end up with drainage tiles on three sides of the house, which is generally not a problem because the fourth side is protected from rain by the slab/crawlspace.

Does the house have gutters? How far away from the house do they go (further is always better). Is the soil sloped away from the house?

-drick