Thread: Extra discharge pipe

I came across an extra section of pipe attached to the main plastic discharge line, and I have no idea what it's for. It's capped on the end as shown in the photos. Any ideas?

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working on a better photo

Better (hopefully) photo attached.

Scott
Just a guess, but may have been planned to be to sewage pump line. Decided to run a different line so pump would not have to pump as high.
But again, just a guess.
I think it should be removed, could fill with water, extra weight could it break off.

My guess is a line that was run for a vent. Where does the other end of the pipe terminate?

If you can see the red arrows I drew, the line terminates with a cap Also, there was a vent line coming from the sanitary pump that is not visible.

The connections are wrong and where's the vent piping?
Perhaps they abandoned what would appear to be a bad installation?

Does it go through the roof, or at least into the attic? I know this is not likely, but could it be for a later installation of radon mitigation? It looks like it might be the right size.

- BOB

a sanitary t used in a vertical to horizontal drain line connection is wrong exception is if it is used as a vent.

Regardless, it goes vertically down into a horizontal line through a sanitary tee.

Sanitary tees are approved for use from horizontal into vertical - P3005.1 and Table P3005.1, IRC.

Plus, you wrote up that exposed facing on the insulation, right?

I'm thinking based on some comments, that it was a first attempt at connecting to the sanitary pump. And the pump did have a vent pipe that is not visible, separate from all the visible pipe in the photo.

I did not write up the insulation issue...I guess I was too enthralled with the pipe :0

what is wrong with exposed facing in an underfloor area?

Originally Posted by brian schmitt

what is wrong with exposed facing in an underfloor area?

Brian,

There is an area on *each* batt which states something like this:

WARNING: RISK OF FIRE! DO NOT LEAVE THIS FACING EXPOSED! The facing must be in contact with approved building materials.

There are variations of the wording, but you get the idea.

And the reason for that warning is that the Kraft-paper insulation facing will flash-burn if ignited and spread a fire in the crawl space across the entire underside of the house within minutes, drastically reducing the time to get out. That's the point of a "flame-spread rating". See IBC Section R302.10 limiting fire-spread rating of the facing or requiring that it be "in substantial contact with an unexposed surface".