[luckyrabbit7]

I thought I was out of the woods for a minute.
I wanted to add a few things to help clear things up.
I tried to used 45s but the copper pipes were in the way of that angle.
The foundation wall is poured, not block.
There are copper lines and a gas pipe in between the trap and the wall.
There is also electrical lines that set on top of the wall that you can't see in the picture.
After massplumber said it looked like a good job, I glued everything together -oops.
Here is another picture from the bottom to show the pipes:
IMG_20100826_122048 | Flickr - Photo Sharing!

[hkstroud]

In kind of a pickle aren't you? If you try to chip out that concrete wall which I assume is 10" thick you risk blowing out the exterior side. Not only that, you would have to notch down enough to get the trap below the copper pipes and gas line.

I think I would notch the sill plate to get the trap as low as possible, turn the trap parallel to the band board, 90 out of the trap, then a tee to go through the joist for the vent pipe. Hopefully top of the hole for the vent will not be closer than 2" to the top of the joist. What size are the floor joist? I guess you could just run the drain through the joist to the vent

Mark or Tom,
What is the smallest vent pipe that could be used.

[mygirlsdad77]

Just my two cents. Sometimes you just have to do what you have to do. In this case, I say you did just fine, it will work and at least the running trap as you have it won't siphon the trap like the s- trap you had would have. Is this being inspected? If not, I say let it be and pat yourself on the back. If it is, I would have the local inspector look at it the way you have it now, and see if he will let it slide, or tell you how he would like to see it done. Good luck and please let us know the final outcome.

[luckyrabbit7]

Thanks for the replies. I wasn't planning on getting it inspected, but maybe that would be a good idea
Can someone fill me in on the running trap issue. I never heard that term. This doesn't seem as bad as a laundry stand pipe.

[speedball1]

OK! I didn't saee the copper until I opened up up "go advanced".
For some reason it didn't show up in the other posts. I still wonder if the trap were lowered enough to clear the copper would that put backfall on the drain line? I'll go along with a running trap, (are they even legal in his area) The distance between trap and vent seems OK so I wish lucky luck in his project. Regards, Tom

[jlisenbe]

I've been tracking this thread all day. It's been entertaining. Lots of good exchanges and information.

[speedball1]

Hey jliserb,
Had I seen the copper under the trap I might not have pushed to install a "P" trap. I've been retired for over 20 years and am still learning from you other experts. You guys make my day.
Didn't mean to "bust yo chops" about this Mark. Cheers, Tom

[jlisenbe]

For the ignorant among us, what exactly is a "running trap", and why is it a problem?

[speedball1]

what exactly is a "running trap", and why is it a problem?

Running traps (see images) are traps located in the drainage piping that are not directly connected with a fixture. Many older homes had running traps in the building sewer, typically in the front lawn. These traps were designed to prevent sewer gases from entering the house. Modern homes do not have running traps since they were found to be unnecessary once effective venting systems were designed.