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Thread: T&P Drain exit photo
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10-20-2010, 07:23 AM #1
T&P Drain exit photo
Take a look at this T%P drain line comign from the slab and then routing upward and then a goose neck down. This house was built in the earl 1990's. Typically see these pointing down, with a 6 inch or so gap on newer homes. With this slab so close to the ground, this configuration seems like the only viable solution to get ground clearance, considering the way the home construction was performed. Was this common in the 1990's and before when T&P's were so close to the ground, without a good amount of clearance?
Thanks
Gene
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10-20-2010, 07:26 AM #2
Re: T&P Drain exit photo
Great pic, good thing I have good distance vision
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10-20-2010, 07:36 AM #3
Re: T&P Drain exit photo
probably not if in fact it was tp drain
did you test it per trec?
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10-20-2010, 09:49 AM #4
Re: T&P Drain exit photo
I've seen what Gene is mentioning before. The T&P drainline termination is less than 6 inches from the ground, so they have placed additional copper on the line to create a uphill run and then elbow it back towards the ground to have that 6 inch clearance.
Still wrong! Not zero-gravity for drainage.
Water does not run up hill!
rick
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10-20-2010, 06:47 PM #5
Re: T&P Drain exit photo
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10-20-2010, 07:35 PM #6
Re: T&P Drain exit photo
I've seen this many times with a Tee substituted for the first elbow so that there are two openings, one down which is too close to the ground and another up over and down at the 6 inch level. I guess it is better than nothing or you could say it is wrong on both levels as well as having a tee in the drain line. The only other fix would be to lower the grade enough to get the 6 inch clearance which would then screw up the grading and drainage. For the rest of the world outside of Texas, these are slab foundations.
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10-20-2010, 08:28 PM #7
Re: T&P Drain exit photo
Yeah, but at the same time, it is supposed to be enough pressure and temperature that a 1/2 inch line or a 3/4 PVC line can't handle it. I think that kind of pressure could handle a bit of an uphill run (speaking practically, not code-wise). Theoretically, we're not talking about gravity here.
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10-20-2010, 08:40 PM #8
Re: T&P Drain exit photo
What picture? I gots to ask ...
Where's the "beef"?!?
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10-20-2010, 08:44 PM #9
Re: T&P Drain exit photo
I think the concern is that when the valves leak (about every 3rd one) that if the pipe does not drain it will fill up and slowly clog with mineral deposits and bacteria. So, two problems in one.
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10-20-2010, 09:14 PM #10
Re: T&P Drain exit photo
Maybe that's it. I don't like to see them run straight up to the roof (which I see occasionally) but I don't make a big deal out of a short uphill run. Maybe I should? Most of the time on older home I'm just happy to see it terminate outside somewhere.
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10-20-2010, 09:49 PM #11
Re: T&P Drain exit photo
T/P drain line should drain downhill and should not be "trapped". I think it is IRC 2803.6.1
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