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Old 10-18-2012, 06:40 PM  
jakepower
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Default Mudroom Drain

Hi Everyone,

I am building a new recroom, bathroom and mudroom where my carport is currently. I am putting in a raised floor and have room for plumbing. I am putting in a mudroom at the back and would like to put in a floor drain. With my ceiling height and the location of the house's plumbing, I will likely only get a slope of about 1" over 20'. I know that that is less slope than I need, but can i get away with it in this instance?

Alternatively, I could run it into the ground. It is just for the purpose of muddy boots etc, so I figure it will be ok, but I'm sure there is something I'm not thinking of.

Any thoughts?



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Old 10-18-2012, 07:40 PM  
nealtw
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You didn't say how high you are raising the floor. If you were raising it 7" wouldn't that allow more like a 5" drop. And welcome to the site.



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Old 10-18-2012, 08:10 PM  
Wuzzat?
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Quote:
Originally Posted by jakepower View Post
I will likely only get a slope of about 1" over 20'.
Somebody may make a pump to fix this, if it needs fixing.

"P3005.3 Horizontal Drainage piping slope. Horizontal drainage piping shall be installed in uniform alignment at uniform slopes not less than one-fourth unit vertical in 12 units horizontal (2 percent slope) for 2 1/2-inch (64 mm) diameter and less, and not less than one-eighth unit vertical in 12 units horizontal (1-percent slope) for diameters of 3 inches (76 mm) or more."
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Old 10-18-2012, 09:21 PM  
nealtw
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I think Wuzzat has an answer in there somewhere, but what about venting it.

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Old 10-18-2012, 10:15 PM  
jakepower
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Quote:
Originally Posted by nealtw View Post
I think Wuzzat has an answer in there somewhere, but what about venting it.
So if I vent it (I'm sure I could get a cheater into the wall next to it) I don't need the slope????

I am putting the floor in about 12" above the slab, but my 3" waste pipe enters the room about 10.5" above the slab, so there isn't much room for slope to my mud room 20' away.
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Old 10-18-2012, 11:02 PM  
nealtw
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I thinks it's time for plan "B", I don't think that's going to work.

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Old 10-19-2012, 10:12 AM  
jakepower
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Is it a bad idea to drain it into my gravel out the back of the house? again, it's just for muddy boots etc

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Old 10-19-2012, 11:25 AM  
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Never like adding more water near the house but not any worse than rincing the boots under the spiget at the back door I guess.

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Old 10-19-2012, 12:22 PM  
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If the slope is wrong I guess you will be snaking it more often than when the slope is right.
Drains that have water or a slurry forced through them by a pump perhaps never need snaking. The fluid under pressure does the scouring.

Your options are
-raise the floor
-use a pump
-take your chances with the slope; if you have trouble add a pumo later.
-other?

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Old 10-19-2012, 01:40 PM  
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Don't know layout of rooms, a quick sketch would be nice. Any way to run drain from mud room outside and tie into main farther down stream?

Raise floor in mud room only, ( don't forget, you need a trap in that line) making for less headroom but maybe acceptable in mud room, run drain to main in chase disguised as or hidden in cabinets or built in bench along a wall, or in wider wall.

Low slope with mud is not good idea. Would take lots of water at fast rate to carry away solids and mud could still settle where it enters larger pipe.

A settling or holding tank arrangement might work. Similar to what are used in basement toilets. When tank reaches certain level automatic pump and additional sediment carrying water kicks in.

If line to gravel is far enough from house, has large enough dispersal area, used only from mud room, you may get away with it. Don't know what local code may say about it



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