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Author Topic: What's the max angle for... uhh... toilet tube. ;)  (Read 4631 times)
muddog16
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« Reply #15 on: August 23, 2007, 02:56:01 AM »

What? No pictures? Huh
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Pat

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Chaz
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« Reply #16 on: August 23, 2007, 06:10:50 AM »

Thanx for the info guys. It's a new day and time to get with the program.  Wink
 By the way, Muddog, that is an interesting request. LOLOLOL  Cheesy Cheesy Cheesy But I know what you mean.  Wink

  My latest idea is to run the grey water over to the toilet drop tube and connect it close to the toilet and then when we use the shower or sinks, it can help push and clean.
  What do ya think?? Feasible?

  Thanx,
      Chaz
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Sojourner
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« Reply #17 on: August 23, 2007, 06:35:02 AM »

About sewer drain line under commode….the least trouble free is to have it drop straight down and/or proper slope to tank. Too little slope and the water won't carry the solids away. Too much slope and the water runs so fast it drops the solids behind. The correct slope is 1/4" to the foot. However having this effective slope apply to RV is not practical because is not in leveled position while temporary parking or driving. In other word avoid #2 till it in level setting. It this fun traveling?

For those who has mild offset to require 45° elbows or less…..it should not have problem as long you  make sure no soft solid is left on slope too long of time to cause it to dry-stick-on pipe so the next flush is unable to move onward to tank. Toilet paper when soak & wet will greatly help to keep pushing solid down till enter tank. After all it always follow the solid….Right!

Best choice is to have it straight down so you have the extra advantage to see waste water & much easier to run a rinsing pipe probe into tank from RV commode opening. If your Polypropylene tank is anywhere under your RV commode…by all mean have a “spin-weld” on the inlet vertically to commode….to be in your advantage in the long run.

Now at 69 going on 70, I have done a few dig-up to repair plug-up sewer drain due to not only collapse or broken tile replacement but unbroken sewer line with improper slope that is plugged with dry & packed solids. That where I learned about slope problem. Since then have never being a problem.

FWIW

Sojourn for Christ, Jerry
« Last Edit: August 23, 2007, 08:07:27 AM by Sojourner » Logged
Busted Knuckle
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« Reply #18 on: August 23, 2007, 07:12:24 AM »

What? No pictures? Huh

They'd be crappie if there were any!

sorry couldn't resist! Grin  BK  Grin
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Busted Knuckle aka Bryce Gaston
KY Lakeside Travel's Busted Knuckle Garage
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H3Jim
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« Reply #19 on: August 23, 2007, 07:35:17 AM »

Chaz, you said something about moving the vanity for the toilet.  The toilet should be the first thing you locate, and put it in a spot that has that stright drop.  Is it too late to locate the toilet so it does have a more appropriate drop?  It does seem from these posts that some angle works fine, partly dependent on how much water our tolilet uses to flush, and how much of the runs you have.. 

My toilet uses about a pint each time, but also does a good job of cleaning itself.  I would not want to have much angle with so little water.

A septic specialist told me that no extra chemicals are needed.  All the bacteria required is supplied by the "kids you drop off at the pool".  Any thing else is just wasted $.  and above all, don't put stuff in there that kills the bacteria, hard on the colony in your tank, hard on the system you dump in.
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Jim Stewart
El Cajon, Ca.  (San Diego area)

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Chaz
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« Reply #20 on: August 23, 2007, 08:13:49 AM »

Your forgiven BK.  Grin
  Jim,
   The bus already has the bathroom fixtures in place. I'm just trying to work with where they are in reference to my tanks. I would have to swap the vanity and toilet to get a straight drop. But then it would mess up the layout of the bathroom also. Dilemmas!!!!   Undecided
  So it looks like it's going to have at least a 45* angle. I may put - for lack of a better word - squirter of sorts in the first 45* elbow under the toilet to shoot any kids down the slide that are hesitant about going swimming.  Cheesy lol
  But I'm kinda liking the idea of plumbing the grey water into the drop tube as close to the first 45* elbow as I can. Wouldn't that be beneficial??

  thanx guys.
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H3Jim
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« Reply #21 on: August 23, 2007, 08:27:48 AM »

Chaz, what was there before?  or rather if the toilet is already in place, was there a tank beneath it already?
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Jim Stewart
El Cajon, Ca.  (San Diego area)

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Ross
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« Reply #22 on: August 23, 2007, 09:12:45 AM »

I also have two 90's with 24" in between and a slight downhill run.  No problems at all.

Ross
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prevost82
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« Reply #23 on: August 23, 2007, 09:14:08 AM »

same here ....
Ron
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Chaz
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« Reply #24 on: August 23, 2007, 09:43:22 AM »

Man, Ron, if you don't have any issues, I don't believe I will. At least i hope not!  Wink

  Jim,
  The PO had 3 55gal. plastic barrels in the bay. (One of each) It was a mess! and VEEEERY ineffecient use of space.
 
  After looking at Ron's I think I will be ok. Thanx for the picture Ron. The kids will just have a quick slide instead of a platform dive.  Grin
  Ok, that's it!! enough of the poop humor. I'm making myself look bad!  Wink
 
  Thanx for the help guys. I REEEEALLY appreciate it!! This is something I wanted to get right the first time for obvious reasons.

   Chaz
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« Reply #25 on: August 23, 2007, 10:01:20 AM »

Nice picture Ron, so much for the conventional wisdom!!!  Makes sense though, that plastic pipe is very slippery, add a little angle, and use the big pipoe, and no worries.

Chaz, got a chuckle out of the diving platform...
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Jim Stewart
El Cajon, Ca.  (San Diego area)

Travel is more than the seeing of sights, it is a change that goes on, deep  and permanent, in the ideas of living.
prevost82
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« Reply #26 on: August 23, 2007, 10:34:01 AM »

One other thing Chaz ...is to use plumbing clamps with the rubber insert, as seen is picture, plan it so you can remove your tank without having to cut any pipes.
Ron
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gus
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« Reply #27 on: August 23, 2007, 02:58:31 PM »

Jerry,

That is all very interesting theory but mine and TomC's systems defy it all and they work fine??

I don't buy the "too much slope" part at all since a straight down is max slope?

Sometimes mine is actually at a slight neg slope due to parking location and it still works! Plenty of flushing water is the key.

I just finished a dig-up to repair a plugged sewer drain myself but it had nothing to do with slope or collapse and doesn't have much to do with buses.
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PD4107-152
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Jerry32
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« Reply #28 on: August 23, 2007, 03:42:59 PM »

One other way to dump the tank uphill is to use the sewer solution that has a water jet action and then it can drain the gray water and still be hooked up. I us one that way all winter in AZ with the gray continuously draing and then dump the black every couple of weeks. Jerry
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« Reply #29 on: August 23, 2007, 04:58:20 PM »

Actually Jerry is right, that is why there are plumbing codes!!! Yours and Toms work fine but. Tom says 2 people can use a 40 gal tank 1 week befor dumping. With almost no offset 2 people in my bus with a 80 gal tank can go 1 month!!!! And I have people that can verify that.  The more run you have the more water you will use. But we have to work with what we have.
 The idea of grey water into the drop tube has a drawback, You will be adding water to your black tank and shortening the interval between dumps. When parked somewhere I want to be able to bypass the system and put the grey directly into the sewer.
 But like Fast Fred always said, "Do it your way"
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