This is a remodel issue. Want to run a drain pipe in the crawl
space from a laundry room sink and it will need to be level for
about 18" just before it hits the sanitary tee that leads to the
waste line. The reason is there is a dryer vent in the way. I'm
concerned about how well that section of pipe will drain.

Kevin

On 7/29/2008 1:08 PM pakdog spake thus:

This is a remodel issue. Want to run a drain pipe in the crawl
space from a laundry room sink and it will need to be level for
about 18" just before it hits the sanitary tee that leads to the
waste line. The reason is there is a dryer vent in the way. I'm
concerned about how well that section of pipe will drain.

Short answer: not very.

Drainpipes with insufficient (in this case, no) slope tend to build up
solids, as you might imagine.

If you absolutely have to do things this way, how about providing an
easy-to-access cleanout at one or, preferably, both ends of that run of
drain? Then you could push the gunk out once in a while.


--
"Wikipedia ... it reminds me ... of dogs barking idiotically through
endless nights. It is so bad that a sort of grandeur creeps into it.
It drags itself out of the dark abyss of pish, and crawls insanely up
the topmost pinnacle of posh. It is rumble and bumble. It is flap and
doodle. It is balder and dash."

- With apologies to H. L. Mencken

On Tue, 29 Jul 2008 13:23:03 -0700
David Nebenzahl wrote:

Short answer: not very.

Drainpipes with insufficient (in this case, no) slope tend to
build up solids, as you might imagine.

If you absolutely have to do things this way, how about providing
an easy-to-access cleanout at one or, preferably, both ends of
that run of drain? Then you could push the gunk out once in a
while.

David,

Thanks for the confirmation. I'm still working on this.

Kevin

On Jul 29, 1:08 pm, pakdog wrote:
This is a remodel issue. Want to run a drain pipe in the crawl
space from a laundry room sink and it will need to be level for
about 18" just before it hits the sanitary tee that leads to the
waste line. The reason is there is a dryer vent in the way. I'm
concerned about how well that section of pipe will drain.

Kevin

Perfectly level? As long as there's_some_fall (and the pipe doesn't
sag), you'll most likely be fine. The dryer vent could possibly be
indented slightly to create some fall in the drain if it causes any
negative slope. Will the washing machine drain into this sink? Sheer
volume of water may be an issue then. HTH. Tom

On Tue, 29 Jul 2008 13:08:20 -0700, pakdog wrote:

This is a remodel issue. Want to run a drain pipe in the crawl
space from a laundry room sink and it will need to be level for
about 18" just before it hits the sanitary tee that leads to the
waste line. The reason is there is a dryer vent in the way. I'm
concerned about how well that section of pipe will drain.

Kevin


The drain slope is supposed to be a minimum of 1/4" per foot. Maybe
you could move the vent 1/4"?

On Tue, 29 Jul 2008 13:08:20 -0700, pakdog wrote:

This is a remodel issue. Want to run a drain pipe in the crawl
space from a laundry room sink and it will need to be level for
about 18" just before it hits the sanitary tee that leads to the
waste line. The reason is there is a dryer vent in the way. I'm
concerned about how well that section of pipe will drain.

Kevin

Your local permit office will help. Ask them if you can go 18" with no
pitch in the pipe.

On 7/29/2008 2:03 PM Oren spake thus:

On Tue, 29 Jul 2008 13:08:20 -0700, pakdog wrote:

This is a remodel issue. Want to run a drain pipe in the crawl
space from a laundry room sink and it will need to be level for
about 18" just before it hits the sanitary tee that leads to the
waste line. The reason is there is a dryer vent in the way. I'm
concerned about how well that section of pipe will drain.

Your local permit office will help. Ask them if you can go 18" with no
pitch in the pipe.

Good answer.

I still like my idea of putting in cleanouts for the inevitable
cleaning-out.


--
"Wikipedia ... it reminds me ... of dogs barking idiotically through
endless nights. It is so bad that a sort of grandeur creeps into it.
It drags itself out of the dark abyss of pish, and crawls insanely up
the topmost pinnacle of posh. It is rumble and bumble. It is flap and
doodle. It is balder and dash."

- With apologies to H. L. Mencken

On Tue, 29 Jul 2008 13:33:47 -0700 (PDT)
tom wrote:

On Jul 29, 1:08 pm, pakdog wrote:
This is a remodel issue. Want to run a drain pipe in the crawl
space from a laundry room sink and it will need to be level for
about 18" just before it hits the sanitary tee that leads to the
waste line. The reason is there is a dryer vent in the way. I'm
concerned about how well that section of pipe will drain.

Kevin

Perfectly level? As long as there's_some_fall (and the pipe
doesn't sag), you'll most likely be fine. The dryer vent could
possibly be indented slightly to create some fall in the drain if
it causes any negative slope. Will the washing machine drain into
this sink? Sheer volume of water may be an issue then. HTH. Tom

Yes, the washer will drain through the same pipe.

Kevin

"pakdog" wrote in message
...
This is a remodel issue. Want to run a drain pipe in the crawl
space from a laundry room sink and it will need to be level for
about 18" just before it hits the sanitary tee that leads to the
waste line. The reason is there is a dryer vent in the way. I'm
concerned about how well that section of pipe will drain.

Kevin

I have a similar situation. I installed it 25 years ago and it has not been
a problem yet. Gravity still works. Take a length of pipe, say 18" to 30"
long and fill it with water. Lay it down of a flat surface. How much water
stays in the pipe?

On Tue, 29 Jul 2008 22:46:06 -0400
"Edwin Pawlowski" wrote:

I have a similar situation. I installed it 25 years ago and it
has not been a problem yet. Gravity still works. Take a length
of pipe, say 18" to 30" long and fill it with water. Lay it down
of a flat surface. How much water stays in the pipe?

Edwin,

I thought about that aspect but decided to make some adjustments
and installed the pipe at an angle without affecting the dryer
vent. Plus I now have one less thing to worry about in my house.

Thanks,

Kevin

On Wed, 30 Jul 2008 00:38:00 -0700, Abe wrote:

On 7/29/2008 2:03 PM Oren spake thus:

On Tue, 29 Jul 2008 13:08:20 -0700, pakdog wrote:

This is a remodel issue. Want to run a drain pipe in the crawl
space from a laundry room sink and it will need to be level for
about 18" just before it hits the sanitary tee that leads to the
waste line. The reason is there is a dryer vent in the way. I'm
concerned about how well that section of pipe will drain.

Your local permit office will help. Ask them if you can go 18" with no
pitch in the pipe.

Good answer.

I still like my idea of putting in cleanouts for the inevitable
cleaning-out.
Actually not a good answer. If the pipe requires a slope, then it's
required. That's it. No one will tell him otherwise, whether it's for
1 inch or 18 inches. He's going to have to mash the dryer vent a
little to make some space. Not a big deal.


Personally, I'd rather mash the vent and slope the laundry drain. Who
needs a possible clogged laundry drain?

On 7/30/2008 12:38 AM Abe spake thus:

On 7/29/2008 2:03 PM Oren spake thus:

On Tue, 29 Jul 2008 13:08:20 -0700, pakdog wrote:

This is a remodel issue. Want to run a drain pipe in the crawl
space from a laundry room sink and it will need to be level for
about 18" just before it hits the sanitary tee that leads to the
waste line. The reason is there is a dryer vent in the way. I'm
concerned about how well that section of pipe will drain.

Your local permit office will help. Ask them if you can go 18" with no
pitch in the pipe.

Good answer.

I still like my idea of putting in cleanouts for the inevitable
cleaning-out.

Actually not a good answer. If the pipe requires a slope, then it's
required. That's it. No one will tell him otherwise, whether it's for
1 inch or 18 inches. He's going to have to mash the dryer vent a
little to make some space. Not a big deal.

Which is apparently just what the OP ended up doing.

Yet another testament to the ability to fix a seemingly hopeless
situation by a little judicious bending, twisting, jacking, pinching,
prying or otherwise forcing something where you want it to go.


--
"Wikipedia ... it reminds me ... of dogs barking idiotically through
endless nights. It is so bad that a sort of grandeur creeps into it.
It drags itself out of the dark abyss of pish, and crawls insanely up
the topmost pinnacle of posh. It is rumble and bumble. It is flap and
doodle. It is balder and dash."

- With apologies to H. L. Mencken

On Wed, 30 Jul 2008 12:40:50 -0700, David Nebenzahl
wrote:

On 7/30/2008 12:38 AM Abe spake thus:

On 7/29/2008 2:03 PM Oren spake thus:

On Tue, 29 Jul 2008 13:08:20 -0700, pakdog wrote:

This is a remodel issue. Want to run a drain pipe in the crawl
space from a laundry room sink and it will need to be level for
about 18" just before it hits the sanitary tee that leads to the
waste line. The reason is there is a dryer vent in the way. I'm
concerned about how well that section of pipe will drain.

Your local permit office will help. Ask them if you can go 18" with no
pitch in the pipe.

Good answer.

I still like my idea of putting in cleanouts for the inevitable
cleaning-out.

Actually not a good answer. If the pipe requires a slope, then it's
required. That's it. No one will tell him otherwise, whether it's for
1 inch or 18 inches. He's going to have to mash the dryer vent a
little to make some space. Not a big deal.

Which is apparently just what the OP ended up doing.

Yet another testament to the ability to fix a seemingly hopeless
situation by a little judicious bending, twisting, jacking, pinching,
prying or otherwise forcing something where you want it to go.

The mouse said to the elephant: "if it don't fit, don't force it".!