On Thu, 14 May 2020 08:01:47 -0700 (PDT), wrote:


I am currently digging out my basement and installing
a french drain/perimeter drain system next to my footings.
My building was built in 1890 so it is built on a stone foundation
(accept the footings which are concrete).
Most advice/direction on perimeter drains are for newer homes
with concrete foundations or slabs. Does anyone here have
experience with a stone foundation? My footing is about 18 inches
below my basement floor.
Is it best to lay my pipe next to the footing or on top of the footing?
Either way it is still well below the floor.
How many drill holes should I drill through the foundation to make weep holes?
Would one every 12-18 inches suffice?
Where is it best to drill the holes- can I do it just above the footing
where it is a bit thinner? The walls are very thick- 18-24 inches thick
and the footings are even thicker.
Any advice is appreciated, thanks.


Hard to imagine _why_ you're doing this ?
Perhaps I'm not understanding the french drain concept ?
Did you consider a sump pit & sump pump -
with an above-grade outlet - which runs away
from the foundation ?
John T.