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Old 03-25-2014, 08:45 PM   #1
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Does 90 degree elbow have proper slope?


I plan to create an extension to shower drain as depicted on the attached diagram.

Does any one know if a 90 degree elbow is designed to have the correct slope already or I need to do something to create the slope?

Thanks!

Does 90 degree elbow have proper slope?-showerdrain.jpg

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Old 03-25-2014, 09:02 PM   #2
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Does 90 degree elbow have proper slope?


Don't think that's gonna work.. post location so we can match your plumbing code.

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Old 03-25-2014, 09:34 PM   #3
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Does 90 degree elbow have proper slope?


I am in Prince William County, VA.
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Old 03-25-2014, 11:13 PM   #4
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Does 90 degree elbow have proper slope?


need to have a 2"trap and vent.....
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Old 03-26-2014, 09:02 AM   #5
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Does 90 degree elbow have proper slope?


But, is the slope built in all fixtures?
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Old 03-26-2014, 02:34 PM   #6
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Does 90 degree elbow have proper slope?


Quote:
Originally Posted by 325_man
But, is the slope built in all fixtures?
the shower is sloped- but fittings are not
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Old 03-26-2014, 03:38 PM   #7
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Does 90 degree elbow have proper slope?


I'm sorry for using the wrong term.
Let me try to rephrase the question.

Are all PVC fittings, i.e. elbows, T's, Y's, etc biult with the appropriate slope? In other words, a 90* elbow is not actually 90*. It is just a bit more than 90* so that if a perfectly straight piece of pipe were inserted into it, it would drop 1/4" per foot.

Thanks!
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Old 03-26-2014, 04:03 PM   #8
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Does 90 degree elbow have proper slope?


Quote:
Originally Posted by 325_man
I'm sorry for using the wrong term. Let me try to rephrase the question. Are all PVC fittings, i.e. elbows, T's, Y's, etc biult with the appropriate slope? In other words, a 90* elbow is not actually 90*. It is just a bit more than 90* so that if a perfectly straight piece of pipe were inserted into it, it would drop 1/4" per foot. Thanks!
no. Not in plastic fittings. You apply the appropriate grade to the pipe while the glue is wet. Then every piece of pipe must be supported- no stress on the fittings
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Old 03-26-2014, 04:58 PM   #9
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Does 90 degree elbow have proper slope?


torpedo levels work great for setting fall on fittings...
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Old 03-26-2014, 06:30 PM   #10
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Does 90 degree elbow have proper slope?


Where is your trap? Perhaps you like the great sewer smell?
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Old 03-26-2014, 10:19 PM   #11
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Does 90 degree elbow have proper slope?


Quote:
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Where is your trap? Perhaps you like the great sewer smell?
There is a trap below the concrete. I have tested it by pouring water into the pipe.
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Old 03-27-2014, 05:42 AM   #12
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Does 90 degree elbow have proper slope?


The trap must be directly below the drain--no off sets allowed----

I'll step out and let a plumber explain why----
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Old 03-27-2014, 06:12 AM   #13
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Does 90 degree elbow have proper slope?


Quote:
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The trap must be directly below the drain--no off sets allowed---- I'll step out and let a plumber explain why----
Is that a code requirement (i.e. No off sets allowed)?
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Old 03-27-2014, 06:18 AM   #14
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Does 90 degree elbow have proper slope?


Yes it is----adding a zig zag like that creates an illegal S trap--and also makes rodding the drain almost impossible.

You need to open the floor and move the drain---this is usually a fairly simple task if the existing drains are PVC---

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