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Old 01-26-2012, 05:12 PM   #1
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Can I use 2" sanitary pvc pipe below new toilet?


Newcomer to the forum.

I have a 200+ year old house. Most exterior walls are 8" oak logs, and several interior walls as well.

I need a toilet upstairs.

The only way to get drainage to the existing stack is by dropping down an interior stud wall, and sloping through a log sill beam then into that soil stack.
Worst problem is that the beam is not just a modern 2x6 treated sill, but it's 12" tall x almost 8" thick OLD/HARD oak.

I don't have access to a 4" forstner bit, so I would have to use a 1-1/2" spade bit with multiple holes drilled just to get a 3" pvc pipe through.

If I have no other appliance on this dwv, could I just use 2" below the toilet (with a 2" riser/vent up to the roof of course) and spare me a ton of 3" high crawl space work?

Rural Virginia location.

Thoughts?

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Old 01-26-2012, 05:43 PM   #2
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Can I use 2" sanitary pvc pipe below new toilet?


Minimum for a toilet drain is 3". Sorry

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Old 01-26-2012, 05:49 PM   #3
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Can I use 2" sanitary pvc pipe below new toilet?


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Originally Posted by toggenburg View Post
I have a 200+ year old house. Most exterior walls are 8" oak logs, and several interior walls as well. I need a toilet upstairs.

I don't have access to a 4" forstner bit... Thoughts?
Get a fresh blade for your chainsaw.
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Old 01-26-2012, 05:51 PM   #4
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Can I use 2" sanitary pvc pipe below new toilet?


I burnt up a brand new drill last time I put a 4" hole in an old beam like that----Better have a quality drill.

Darn thing was like stone!
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Old 01-26-2012, 05:55 PM   #5
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Can I use 2" sanitary pvc pipe below new toilet?


Quote:
Originally Posted by toggenburg View Post
Newcomer to the forum.

I have a 200+ year old house. Most exterior walls are 8" oak logs, and several interior walls as well.

Rural Virginia location.
Wow, Grizzly Adams, that must be REALLY rural Virginia...like mountains of West Virginia...

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Old 01-26-2012, 05:56 PM   #6
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Can I use 2" sanitary pvc pipe below new toilet?


I keep a drill just for stuff like that. It's old, but fair quality...and I'll ride it til it bucks, so to speak.

Mainly for drilling OLD wood.....and mixing thinset...I hate that sh I get "spin burns" on my legs every time I try to hold the bucket, lol.
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Old 01-26-2012, 06:14 PM   #7
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Can I use 2" sanitary pvc pipe below new toilet?


Thanks for the answers, I really did know 3" minimum, but just wanted to avoid all the work.
It is in such a bad spot that I would not ever reach for my Stihl 028 wood boss.
I find the Milwaukee 1/2" drill turns too slow, so I have the Hitachi 18V (greater speed) and try to run it cool enough to keep going.
The only satisfaction is that when ever this job is done, I won't ever have to redo it.
This old plantation house has been a real work.
The 2nd floor had only 2 outlets up there, and it took a long time to find a way thru the log structure to get more circuits. When i did run new 12 gauge up there, I found that I had chosen the same pathway that someone (probably in the 1930's with DC voltage) else had run a cable within 1" of where I drilled my 1st pilot hole (their's was covered up so well that I had no idea there might be something hot there).

I've redone all the plumbing, electrical upgrades, windows, floors, walls (no logs are visible unless you know where to look) added 5 or so new windows, lots of stuff (even knob & tube stuff).

Wish I knew of this forum long ago.

Thanks for the greetings.
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Old 01-26-2012, 11:22 PM   #8
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Can I use 2" sanitary pvc pipe below new toilet?


I'd put it like this :

You're flying under the radar (no inspection) you can do whatever you want to do.

What i'd recommend is a 3" drain. You put anything less than that in there, and you're going to end up unclogging the thing every morning, until the entire line plugs up, at which point you'll need someone to put a cable down the drain.

For the amount of money you're gonna save in roto-rooter service calls, you could probably buy a brand new drill and a whole set of nice bits.




Good luck!
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Old 01-26-2012, 11:27 PM   #9
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Can I use 2" sanitary pvc pipe below new toilet?


I see a red flag, what does that beam do. It will weaken it to the point of having it split if it's a load bearing beam.
Use a self feeding auger bit not a spade bit.
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Old 01-26-2012, 11:54 PM   #10
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Can I use 2" sanitary pvc pipe below new toilet?


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I burnt up a brand new drill last time I put a 4" hole in an old beam like that----Better have a quality drill.

Darn thing was like stone!
Buy a hole hawg!
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Old 01-27-2012, 12:57 AM   #11
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Can I use 2" sanitary pvc pipe below new toilet?


I think you can use a 2in. Or at least it is worth researching, they used to make poop grinder that would flush thru a 2in pipe.
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Old 01-27-2012, 01:14 AM   #12
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Can I use 2" sanitary pvc pipe below new toilet?


I think you can use a 2in. Or at least it is worth researching, they used to make poop grinder that would flush thru a 2in pipe.
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Old 01-27-2012, 09:55 AM   #13
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Can I use 2" sanitary pvc pipe below new toilet?


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Buy a hole hawg!
I live in a world of modern houses---the last oak beam I drilled through was in 1994---I bought a Hole Hawg and a Hole Shooter after that job---

Tough drills---the hole shooter cracked two ribs once---can stop that tool.
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Old 01-27-2012, 09:57 AM   #14
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Can I use 2" sanitary pvc pipe below new toilet?


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I live in a world of modern houses---the last oak beam I drilled through was in 1994---I bought a Hole Hawg and a Hole Shooter after that job---

Tough drills---the hole shooter cracked two ribs once---can stop that tool.
Ive also got a super hawg someplace,when it grabs on i let it go!
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Old 01-27-2012, 10:30 AM   #15
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Can I use 2" sanitary pvc pipe below new toilet?


As far as the oak beam, that 'sill plate' is an adzed log, probably 20' long and resting entirely on a 10" concrete knee wall. Tho I still will have 6-7" above my hole, I am supporting both sides with 4 solid wood blocks and strapping (side to side) with 1-1/2" x 10" steel plate.
3" is the way I began and just wanted to save some sweat work up front.
If I did 2", you all are probably right, I would have a lifetime of clogs.

The old adage "Do it right the first time and you only have to cry once" is correct.

Thanks for all the response.

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