barbie gee <
boo...@nosespam.com> wrote:
> I've lived in more than a few properties in Chicago that had a "Catch
> Basin", generally under the back porch. I know it had something to do
> with the building plumbing, but what?
> Can our resident Chicago historians please explicate a little?
I thought this was covered somewhere in the past on here.
As far as I can tell, the only purpose of it is to have access to the main
sewer line that runs under the house.
It's a pit or well that is about 10 feet deep, depending on the depth of the
basement. About a foot or two from the bottom of it is the main line that
goes out to the street, so most are the furthest point away from the street
sewer.
If something clogs up between it and the street, one (not me) can climb into
it and rod it from there to the street. In my place, in the basement, the
only hole/drain in the floor is a regular like 1 inch or inch and a half
drain that ties into the main line, so it would be useless to rod from
there.
Some houses on this block have them in the front of the house, which seems
to mean it was an after thought, put in much later than when the house was
built.
If you don't have one (catch basin), you must have some kind of clean-out
trap somewhere that can access the line running under the building.
Off hand it seems technology has made the catch basin obsolete. I'm pretty
sure at one time, maybe before "power rodding", it probably was a pain to
get a rod down 6 to 8 feet then make a 90 degree turn, all the time trying
to push/pull the rod to clean anything. So installing or having a catch
basin allowed a better cleaning of the line.
These days putting a clean-out trap in the front lawn or basement somewhere,
any of the power rodders can make it from there to the street.
I really don't think the catch basin was for rain water, even though most
gutters emptied into them. Was probably a easy way to dump the water
somewhere and not have to tie into the line under the house.
Technically the catch basin should be next to empty all the time. Since the
line going to the street is near the lowest point, if you don't see the top
of the pipe, something isn't flowing right.
Bottom line, I really think the only purpose of them was to have access to
rod the main line to the street back in the days when it was all done by
hand.
-bruce
b...@ripco.com