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Old 06-01-2011, 09:43 PM   #1
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Does anybody have any anecdotal evidence/stories about "Drain Line Carry" issues surrounding newer toilets?

An article about Drain Line Carry concerns in Water Sense toilets.

http://www.allianceforwaterefficienc...=id&ItemID=886
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Old 06-01-2011, 09:52 PM   #2
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Does anybody have any anecdotal evidence/stories about "Drain Line Carry" issues surrounding newer toilets?

An article about Drain Line Carry concerns in Water Sense toilets.

http://www.allianceforwaterefficienc...=id&ItemID=886
No, but I do have a pic of Drew Carrey sitting on a newer toilet in a Cleveland bowling alley mens room. Not sure if that helps.
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Old 06-01-2011, 10:28 PM   #3
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No, but I do have a pic of Drew Carrey sitting on a newer toilet in a Cleveland bowling alley mens room. Not sure if that helps.
Yes.

This is exactly what I have been looking for....
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Old 06-01-2011, 10:41 PM   #4
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Lol
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Old 06-01-2011, 11:30 PM   #5
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A proper read on the subject. This should answer all of your questions pertaining to this issue.

http://www.cwwa.ca/pdf_files/Drainli...on-Apr%201.pdf
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Old 06-02-2011, 12:22 AM   #6
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A proper read on the subject. This should answer all of your questions pertaining to this issue.

http://www.cwwa.ca/pdf_files/Drainli...on-Apr%201.pdf
Yeah. I have read that.

We have a lot of cast iron here. The study suggests further study may be conducted for older pipe and says that Cast Iron (presumably new installations) reduces the distance carried by about 1/3.

I try to direct customers to 1.6 gpf toilets vs. 1.28 gpf toilets because of my concerns regarding their existing piping. It doesn't seem to be too big of an issue, but I have had a problem with a basement bathroom clogging at the existing cast iron.

The guy that does all of our drain work swears that the lower flow toilets (1.28) aren't keeping the main drains as "open" as the 1.6.

I guess I am just comparing notes.

The study (or maybe it was another one) suggests that larger diameter pipes with longer runs that don't introduce additional fixtures might be subject to drain line carry issues.

Those conditions are more common in commercial installations than a residence. Although a residential installation with old cast iron may have similar drain line carry issues.

I suggested the customer have the run of cast iron jetted or replaced but she has elected to have it cabled.

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Old 06-02-2011, 12:48 AM   #7
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We have a lot of problems with septic fields here now that toilets don't carry like they used to. Plus the ladies of the house putting stuff they shouldn't adds to the problem.
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Old 06-02-2011, 10:02 AM   #8
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Kohler rep told me their standard for line carry is 40'. The study mentioned in the OP brings up a valid point about the testing method and media.

I guess as long as the total developed length of toilet drain piping is never longer than 40' and we can poop floating ping pong balls, there should be no problems at all.
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