Need To Gain Height At Right-angle Turn (go From 8" Drop To 4" Drop From 90* And T) - Plumbing - DIY Home Improvement | DIYChatroom


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Old 11-04-2010, 06:37 PM   #1
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Need to gain height at right-angle turn (go from 8" drop to 4" drop from 90* and T)


I have a single story house with basement. I just recovered from the disaster of the clogged line and sewage everywhere in the basement coming out of my washing machine drain. I am in the middle of renovating the basement and this is the second time this has happened and I want to fix it permanently. The one wall I did not replace was the wall that the 3 drain pipe travels behind next to the foundation wall. I got the notion that this pipe did not actually travel down and after cutting the wall open I confirmed this to be the case.

I used laser light to shine a level line down it and over 16 feet it only lowers about 1 inch. It actually goes up about in inch in the middle. I obviously cannot change where it exits the house (about 4 ft high thru the foundation wall) so to gain the height I need to raise the other end about 3 inches to get a 4" drop over 16 ft. Only the kitchen sink and the washing machine in the basement feed into this main line separately from the 3 pipe that is to a right angle that the 1 bathrooms drain into. The right-angle turn was done properly with a 90* down into a 'curved' T. I learned I cannot do a flat use a 90* flat to do a right-angle turn even with a long smooth 90* like I planned. So I just read this post that you can use a street 90* to a 45 wye and that should gain me some height. Is this a good plan?

I will get pictures up when I get home and can take some.

Second the 16 ft pipe is grey schedule 40 PVC which I believe is meant for electrical. So I bought three 10 ft sections from lowes to replace all of this with white PVC from. I should replace it all correct? And to think the guy that owned the house before me was a plumber...

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Old 11-04-2010, 07:31 PM   #2
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Need to gain height at right-angle turn (go from 8" drop to 4" drop from 90* and T)


I will wait for the pictures.

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Old 11-05-2010, 11:05 AM   #3
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Need to gain height at right-angle turn (go from 8" drop to 4" drop from 90* and T)


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Originally Posted by braindead View Post
I will wait for the pictures.
So I checked out a street 90* to a 45* wye and it is still 8" basically. Using a street 90* into the same "curved" T, but that does not do enought. If currently the joint is and 8" drop center to center, I need it to be 5" center to center. Where can I buy the pipes that will do what I need?

Pics:

So yes that is 220 hanging out of my ceiling.
On the right is the sink and toilet. Moving toward the left you can see the the gooseneck for the tub, which feeds into a 3" vent that is connected via the why. There is a old capped of 2" vent infront of it. At the very far left a rubber couplink is used to connect the white PVC to the grey.







The half bathroom sing comes in from the garage and the half bathroom tolet is just after the vent.


Here you can see the joint I am trying to gain my height on, basically to make the drop in height less than what it is (8")


Now the rubber wye that is used for the washing machine drain has got to go. That thing is a major restriction. I beleive I am replacing all the grey PVC, minus the vent tube.




That pipe coming down is the kitchen sink. From the roof I see there is a vent for this, but I cannot see where/how/if it is acatually tied in.


A close shot of the vent and behind that the half bath toilet

Ok so that tube against the wal continues on as shown in the next pic below this one:
Attached Thumbnails
Need to gain height at right-angle turn (go from 8" drop to 4" drop from 90* and T)-cimg0124.jpg   Need to gain height at right-angle turn (go from 8" drop to 4" drop from 90* and T)-cimg0126.jpg   Need to gain height at right-angle turn (go from 8" drop to 4" drop from 90* and T)-cimg0127.jpg   Need to gain height at right-angle turn (go from 8" drop to 4" drop from 90* and T)-cimg0141.jpg  
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Old 11-05-2010, 11:06 AM   #4
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Need to gain height at right-angle turn (go from 8" drop to 4" drop from 90* and T)


Now this is the streach that does not angle down:








Here is the other end where it all exits thru the foundation. I have to measure as that cast iron looks bigger than 3".




Now here you can see the laser light which I have angles up to show a 1/4" per foot.








I attached some pics on post above of where I show a level laser line down the length of the pipe. It may be hard to see, but it should show that the pipe is basically level and in the middle it has a rise. Over the 12-14' in that room in only is lower 1" on the far left and most of that is just from the last few feet.
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Old 11-05-2010, 11:06 AM   #5
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Need to gain height at right-angle turn (go from 8" drop to 4" drop from 90* and T)


This is just a pic from the garage showing the half path sink line.
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Old 11-05-2010, 12:54 PM   #6
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Need to gain height at right-angle turn (go from 8" drop to 4" drop from 90* and T)


Quote:
I just recovered from the disaster of the clogged line and sewage everywhere in the basement coming out of my washing machine drain. I am in the middle of renovating the basement and this is the second time this has happened and I want to fix it permanently
I'm not even sure where to start. It appears you have a major plumbing disaster, not much of which is to code, and should probably be entirely re-plumbed inside. Additionally, what is the condition of the line outside of the house?
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Old 11-05-2010, 01:18 PM   #7
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Need to gain height at right-angle turn (go from 8" drop to 4" drop from 90* and T)


I sent a cheepo 50' snake down the outside line with no issues so I think it is fine. I was hooked up to city sewer 3 years ago before we bought the house. I plan to replace all the grey PVC. I dont know that the white PVC needs to be replaced.

It is not in the pucture, but where the turn down is at the right angle turn. Strai down in the foundation is the hole where the old sewage line went out I assume for the septic.

Last edited by aviator79; 11-05-2010 at 01:20 PM.
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Old 11-05-2010, 09:39 PM   #8
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Need to gain height at right-angle turn (go from 8" drop to 4" drop from 90* and T)


I can't follow all your pictures. But I do see several santees on their backs which is not good! Only use them to go horizontal to vertical. You want to use wyes instead. They are more directional. Reading your posts, I'm not sure if you know the difference between the two fittings. Also, you can use 90's horizontally but it needs to be a long sweep.
IMO what you need to do is consider removing all existing horizontal lines and start from scratch. Sounds drastic but it will be the easiest.
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Old 11-06-2010, 12:42 PM   #9
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Need to gain height at right-angle turn (go from 8" drop to 4" drop from 90* and T)


I took the grey pipe out and the santees. Replacing it with normal white 3" PVC. GOing to the store to get a fitting to connect the 3" PVC to the 4" cast Iron Y.

I will be making the right angle turn with a street 45 down into a 45 Y.

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