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Old 02-24-2013, 12:56 PM   #1
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New Toilet Install


Background Info: I purchased my house two years ago as a "two bathroom" home in Maryland. The home was built in 1968 and was completely remodeled before we purchased it. After about a month we realized the upstairs and downstairs tub's were not draining correctly (They were not vented). We ended up ripping out the downstairs tub (saw there was not even a trap under it) replaced some copper drain pipe with pvc and installed a vent. The upstairs bath now vents correctly. The pvc in the pictures drains the upstairs bathroom sink and tub and also vents through the roof.

We would like to just make the down stairs bathroom a half bath, putting a toilet were the tub was (the area where there is not tile). The iron pipe is 3.5" OD. The pvc going up is 1.5".
1) Will a toilet install work where I've noted?
2) Should I install a rear outlet or wall mount toilet so there is a little additional fall on the line, or will just cutting a trench in the slab work?
3) Once I get the cast iron reducer off, should i just install a fernco to connect the cast iron with pvc 3x3x1.5 Santee?

The block of wood in the hole is nothing, just a piece of scrap that fell in when doing some deconstruction. Thanks in advance, and sorry for being a little long winded...
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Old 02-24-2013, 01:41 PM   #2
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New Toilet Install


as observed from pics your 3" soil pipe require some slope in order to run waste under gravity. you can raise the level of concrete portion to get the required slope. The slope should be atleast 1in50.


Last edited by mohdsaif; 02-24-2013 at 01:43 PM.
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Old 02-24-2013, 02:41 PM   #3
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New Toilet Install


Would a pressure assist toilet solve this problem if I am not sure of the slope of my soil pipe under the slab?
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Old 02-24-2013, 02:48 PM   #4
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New Toilet Install


Quote:
Originally Posted by mohdsaif View Post
as observed from pics your 3" soil pipe require some slope in order to run waste under gravity. you can raise the level of concrete portion to get the required slope. The slope should be atleast 1in50.
I don't see an existing 3" line for the toilet...
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Old 02-24-2013, 02:59 PM   #5
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New Toilet Install


Sorry, I should have gone into more detail about the current toilet configuration. It is on the other side of the room, on top of a raised slab (very awkward to get to). Behind the current toilet is a 1.5" line dropping down from the kitchen drain. The large copper drain you can see in the wall is the upstairs toilet. The drain under the toilet I assume drops down into the drain under the slab.
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