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Topic Closedsewer line

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a walton View Drop Down
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Joined: 31-Aug-2001
Location: westminster, co adam
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Direct Link To This Post Topic: sewer line
    Posted: 31-Aug-2001 at 6:11pm
have installed a sewer line in a mojular home and would like to know the drop in inches to the septic line. Should the line hold water or be dry when water is put through it. I have a leak and water drips most of the time I know I need to re plumb but not sure how much drop in inches in the line. about 24' from 1st hook up to main septic line
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Spook View Drop Down
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Direct Link To This Post Posted: 21-Oct-2001 at 2:23am
Seems like you should have employed a professional plumber to install that line.
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Pipepusher View Drop Down
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Direct Link To This Post Posted: 23-Oct-2001 at 4:33pm
Spook I would have to agree with you.It always costs more to do it over again.
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John Aldrich View Drop Down
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Joined: 20-Feb-2000
Location: Timnath, Colorado US
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Direct Link To This Post Posted: 11-Nov-2001 at 8:01am
a walton,
>have installed a sewer line in a mojular home and would like to know the drop in inches to the septic line.<

The minimum slope in the sewer pipe is defined in the plumbing code in force in your specific jurisdiction. Generally though, most codes require at least a 1/8 inch drop per foot of 3-inch or, 4-inch sewer pipe. So, that is 1-inch of drop for every 8-feet of run. Check the local code and install the pipeline to the specifications defined therein.

>Should the line hold water or be dry when water is put through it.<

The purpose of a minimum slope in a gravity sewer pipeline is so that water will not remain in the pipe.

>I have a leak and water drips most of the time I know I need to re plumb but not sure how much drop in inches in the line.<

If you are using PVC, or ABS plastic DWV (Drain, Waste, and Vent) pipe, be sure to clean thoroughly all glue surfaces with the appropriate solvent/cleaner, and follow precisely the instructions on the container of cement. Attention to detail will prevent leaks in the future.

>about 24' from 1st hook up to main septic line<

Seems like the MINIMUM fall in the sewer pipeline is 3". The slope of the finished pipeline could be, and probably will be, greater than 1/8 inch per foot (up to vertical), but it can not be less than this grade. Again, check the local plumbing code to see what slope is required, it may be 1/4 inch per foot in some jurisdictions.

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