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Posted by Tom Cular on October 23, 2009, 9:37 pm
Dan,
Your thinking about the low slope and moving solids in a sanitary sewer is
on track, however , it's acceptable to go up to a 12% slope. If that will
not accommodate the needed grade change, a vertical drop is required, such
as a drop manhole or a tee/wyes with a clean out. Clean outs should be
provided every 75' and at every change in direction.
Keep the world flowing ;-)
> My understanding is to not exceed the 1/4/foot. The low flush toilets
> just don't have the volume to clean the lines and excess pitch just tends
> to leave solids. You would not change grade with a 90 down, but rather,
> two 45's.
> --
> ______________________________
> Keep the whole world singing . . . .
> DanG (remove the sevens)
> dgriff237@7cox.net
>> We all know that 1/4" per foot is the minimum slope for sewer pipe with
>> solids. My question is this: Is a drop of 1/2" per foot ok or even more
>> or should you 90 elbo it down to continue the 1/4" drop.
>> --
>> Robert Olin
>> Bob's Water & Septic LLC
>> jolin@whidbey.net
>
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> solids. My question is this: Is a drop of 1/2" per foot ok or even more
> or should you 90 elbo it down to continue the 1/4" drop.
> --
> Robert Olin
> Bob's Water & Septic LLC
> jolin@whidbey.net
>