Flint insists it is a pier installed a year ago, but it is a foot out from the corner of our home. It is rusty and cast iron. I had a plumber out here today that though it was a clean out line, but we identified the 2 clean out lines and the slope out and aren't perpendicular to the house. The Plumber was befuddled and admitted he had no idea what it was. Flint maintains plumbing would not be perpendicular and that it must be structural, but I disagree. The piers are steel and this is clearly cast iron. I am not aware of structural elements being made of cast iron... and the only support it might supply would be to the patio... and with a small blue cap at the end I have a hard time believing that wasthe intention of it.

So... any guesses???

What the heck is that? An old sprinkler system?

under the patio???

Who knows? Maybe there used to be a lawn there.

So you noticed a broken patio, and then lifted up the rubble and saw a pipe going straight down into the ground?

It's the pipe to Hell?

The facts that I know: that after the foundation repair people did their work, they had to (for whatever reason) repair several patches in the concrete of the patio (just as they had to DIG HOLES "a foot out" from the house where they worked in a dirt area). THIS WAS ONE OF THEM. ... I'm not an expert on what exatly they do, but I know with 100% certainty that they did SOMETHING in that exact spot, and that, now, their concrete repair has popped loose. Whatever this thing is, it is something that was part of the foundation work. There is no question about that. This is a known fact.

Edit: Bruce, can you move this whole topic to the "What Is This?" thread? This isn't the right thread.

from Glatt's post

You are wrong... the areas they repaired are a few inches over from this... a different color entirely... you are wrong honey. I love you, but you are wrong.

Correct...

Weird.

Maybe it leads to an old cistern? Or maybe it's irrigation? Is it small, like a supply pipe an inch wide, or fat, like a drain pipe a couple inches wide?

I don't know much, but speaking as a man, I would totally pee down that pipe.

I thought about posting the same thing, and then was going to switch it to suggesting pouring gasoline down there and lighting it, you know, for fun. But then I thought I'd be serious.

It is a few inches wide... exactly like a drain pipe, but sticking straight up at the sky.

Was that a plastic drinking cup covering the pipe in the first picture?

If it is in the same spot as the place where the foundation people were working, maybe it's a hole for testing the soil. Don't know why there would be a pipe there. I know very little about getting core samples of soil for foundation tests. Or maybe it leads to a cistern. Is there a downspout or a logical place for a previous downspout nearby? Or maybe it it tied into the sewer system and is some sort of clean out. Does it smell bad? That's probably the most logical guess.

If you lived up north I'd be suggesting buried heating oil tanks.