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Posted by on April 30, 2007, 7:13 pm
Should a foundation drain tile be placed at the bottom of the exterior
foundation wall above the footing or at the bottom of the footing? I
was taught long ago that it should be the bottom but my excavator says
top.
Thanks in advance,
Geo
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Posted by Bob Morrison on April 30, 2007, 7:49 pm
In a previous post geo.nova@hotmail.com wrote...
> Should a foundation drain tile be placed at the bottom of the exterior
> foundation wall above the footing or at the bottom of the footing? I
> was taught long ago that it should be the bottom but my excavator says
> top.
> Thanks in advance,
> Geo
>
For best result the bottom of the drain (invert) should go at or below the
bottom of the footing.
--
Bob Morrison, PE, SE
R L Morrison Engineering Co
Structural & Civil Engineering
Poulsbo WA
bob at rlmorrisonengr dot com
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Posted by Michael Bulatovich on April 30, 2007, 8:45 pm
> Should a foundation drain tile be placed at the bottom of the exterior
> foundation wall above the footing or at the bottom of the footing? I
> was taught long ago that it should be the bottom but my excavator says
> top.
Bottom
--
MichaelB
www.michaelbulatovich.ca
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Posted by Shannon Pate on April 30, 2007, 10:02 pm
Although, lower is probably better since you are moving the water well
before it has time to accumulate against the foundation, your location and
footing installation may dictate the placement of the foundation drain.
The posters who have already answered that the drain be located at the
bottom of the footing must be located in areas where the footings are formed
and poured.
There are other areas where the footing is created by digging a trench in
the earth. That entire trench is then filled with concrete to create the
footing. With this installation, the foundation drain is placed on top of
the footing, but below the basement slab level.
The drain is then covered with gravel and a filter membrane.
Shannon Pate
> Should a foundation drain tile be placed at the bottom of the exterior
> foundation wall above the footing or at the bottom of the footing? I
> was taught long ago that it should be the bottom but my excavator says
> top.
> Thanks in advance,
> Geo
>
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Posted by DanG on May 1, 2007, 12:11 am
The flow line of the drain tile has to be below the finish floor.
The lower, the better to keep the water level down, but finish
floor is the determining factor.
--
______________________________
Keep the whole world singing . . . .
DanG (remove the sevens)
dgriff237@7cox.net
> Should a foundation drain tile be placed at the bottom of the
> exterior
> foundation wall above the footing or at the bottom of the
> footing? I
> was taught long ago that it should be the bottom but my
> excavator says
> top.
> Thanks in advance,
> Geo
>
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