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Home Repair - - If it ain't broken, don't fix it. Otherwise look here.
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Posted by Scott Townsend on August 25, 2006, 1:17 am
I have a 3" Septic line that is under neath the floor joists and needs to
get to a 5" chase in the Foundation. Its about a 2' elevation difference
from the 1/4" foot run elevation and the chase.
Then from the Chase to the Septic Tank I need to again do a rapid decent
from the chase to the level that will give me 1/4" foot out to the Septic
Tank.
So my question is this, do I do a Right 90 down in elevation, and 90 over or
do I do a 45 and 45?
Seems like the 45/45 is the way to go, but I don't want my liquids to run
away from my solids. In keeping with the theory of a multi story house. its
all 90/90 to get from floor to floor.
So what should I do??
Thanks,
Scott<-
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Posted by on August 25, 2006, 9:39 am
Ever tried to shove a plumbing snake through 90 degree bends?
Scott Townsend wrote:
> I have a 3" Septic line that is under neath the floor joists and needs to
> get to a 5" chase in the Foundation. Its about a 2' elevation difference
> from the 1/4" foot run elevation and the chase.
>
> Then from the Chase to the Septic Tank I need to again do a rapid decent
> from the chase to the level that will give me 1/4" foot out to the Septic
> Tank.
>
> So my question is this, do I do a Right 90 down in elevation, and 90 over or
> do I do a 45 and 45?
>
> Seems like the 45/45 is the way to go, but I don't want my liquids to run
> away from my solids. In keeping with the theory of a multi story house. its
> all 90/90 to get from floor to floor.
>
> So what should I do??
>
> Thanks,
> Scott<-
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Posted by Scott Townsend on August 25, 2006, 2:55 pm
I'd have Cleanouts at either ends of the 90.
Is that the only reason? What about the flow of the liquid getting away
from the Solid? Am I too worried about it?
Thanks,
> Ever tried to shove a plumbing snake through 90 degree bends?
> Scott Townsend wrote:
>> I have a 3" Septic line that is under neath the floor joists and needs to
>> get to a 5" chase in the Foundation. Its about a 2' elevation difference
>> from the 1/4" foot run elevation and the chase.
>>
>> Then from the Chase to the Septic Tank I need to again do a rapid decent
>> from the chase to the level that will give me 1/4" foot out to the Septic
>> Tank.
>>
>> So my question is this, do I do a Right 90 down in elevation, and 90 over
>> or
>> do I do a 45 and 45?
>>
>> Seems like the 45/45 is the way to go, but I don't want my liquids to run
>> away from my solids. In keeping with the theory of a multi story house.
>> its
>> all 90/90 to get from floor to floor.
>>
>> So what should I do??
>>
>> Thanks,
>> Scott<-
>
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Posted by on August 25, 2006, 5:32 pm
> >> Seems like the 45/45 is the way to go, but I don't want my liquids to run
> >> away from my solids. In keeping with the theory of a multi story house.
> >> its
> >> all 90/90 to get from floor to floor.
> >>
> >> So what should I do??
> >>
> >> Thanks,
> >> Scott<-
> >
There is such a thing as minimum slopes for sewage lines, but not a
maximum slope. The more slope, the better. The liquids running away
from solids and causing clogs theory is a myth. High flow velocity is
good. See this:
http://tinyurl.com/kz2gj
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Posted by EXT on August 25, 2006, 8:31 pm
Vertical lines are used all over the place, between floors and down to the
basement floor for sewer and drain lines. If you have the space you could
use two 60 degree ells as they take less room than two 45 degree ells. If
you don't have or want to use the space you can use two 90 degree ells,
however you may want the bottom one replaced by a wye topped with a 45 to
achieve 90 degrees with a clean out in the other inside end.
>
>> >> Seems like the 45/45 is the way to go, but I don't want my liquids to
>> >> run
>> >> away from my solids. In keeping with the theory of a multi story
>> >> house.
>> >> its
>> >> all 90/90 to get from floor to floor.
>> >>
>> >> So what should I do??
>> >>
>> >> Thanks,
>> >> Scott<-
>> >
>
> There is such a thing as minimum slopes for sewage lines, but not a
> maximum slope. The more slope, the better. The liquids running away
> from solids and causing clogs theory is a myth. High flow velocity is
> good. See this:
>
> http://tinyurl.com/kz2gj
>
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