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NRALIFR's avatar
NRALIFR
Explorer
Dec 10, 2020

Dumping at Home

I considered putting this on the multi-page Dump Station Observations topic, but maybe I’ll just let that sleeping dog lie.

You guys have actually been a source of amusement and encouragement to me for the past week or so, as I’ve been fixing a problem with my septic system at home. Reading that topic has made me not hate so much the obvious downside of sewer work, and appreciate even more what I’m going to end up with after fixing and improving my home system.

So......I decided what the heck, I’m just going to “pollute” this topic with some pictures of my work. Throw a bunch of “stuff” up against the wall and see what sticks. Hopefully, things won’t get too stinky in the process. :W

There’s a seven year back-story that goes with this, and I’ll try to tell that as briefly as possible.

- In 2013 we tore down our garage. A two car, flat roof, former open carport monstrosity on a bad foundation. This was taken the day I started tearing it down, and you can see just a bit of my camper sitting downhill on an asphalt pad.



The new garage has a new bay big enough to put my truck with the camper on it inside, but because of the hillside, the floor of this new RV bay is seven feet lower than where the cars park. Here’s a picture of what we ended up with, and if you look closely, you can see a white PVC pipe sticking up just off the concrete apron near the tree.



That’s my RV dump station, and the reason it’s there is because the septic tank behind the garage was only “downhill” from the house and upper bay. The RV bay was lower than the septic tank, and as we all know, stuff won’t flow uphill. I’ve used this dump station many times over the past seven years. It’s not ideal because the apron isn’t level, but it works much better than nothing at all.

- About three years ago, we started having some issues with the septic tank, and it became apparent that we needed to replace it. Rather than installing the new tank in the same place, we put it further downhill. Now, the new tank is lower than the RV bay. Ever since then, Ive wished I had a dump station that I could use from the RV bay, but there wasn’t any way to get the stinky slinky over to the new tank, that was literally less than 20 ft away.

- About a year ago, I discovered that there was a problem with the sewer pipe going into the new tank. The hole dug for the new tank was pretty big and deep, and there was a lot of associated digging between the tank and the house to hook it up. The ground settled a lot around the tank, and caused a Y joint about three feet uphill from the tank to settle and break. The only indication I had that anything was wrong was how the inlet pipe looked inside the tank. It appeared to be pointing slightly up instead of being almost level, and I knew it didn’t look like that when it was installed. It wasn’t causing any backups, but I knew there had to be a low spot in the line that needed to be fixed, and I confirmed that with a wireless borescope camera.

This picture was taken when the new tank was installed, and the Y joint at the feet of the guy bending over is what settled. It didn’t actually break, it pulled a glue joint apart so that it was open on the bottom.



- Since I’ve had a lot of spare time on my hands this year :( I’ve been able to brainstorm about how I could make a new dump station along with this repair that I knew needed to get done. The first thing I did was put a door in the garage wall behind where my camper sits. This isn’t a primary entry/exit door, so I left the cinder block wall below it.



Then I bought a 5” wet diamond core drill and an adapter so I could use it with my 1/2” drill, and cut a hole in the cinder blocks below the door opening. Then I mortared in a short pass-through pipe with a cap on the outside.



Then I started the fun part about the same time the Dump Station Observations topic showed up. I hired a guy to work with me digging the hole, and got the pipe exposed.



We had to cut about 3” off of the pipe going into the tank, and pull it back up so that it had the right slope into the tank, and then rebuild the line going to the house with rigid connections. That changed the relationship of the Y fitting to the line coming from under the garage just enough that I wasn’t going to be able to get perfect alignment without digging up a lot more of that line than I wanted to. I also wanted to insert another Y in that line so I could have a “clean out” nearby. We exposed a few more feet of the garage sewer line and cut it back to minimize the misalignment, then reconnected it using two rubber Fernco fittings. That may not be strictly to code, but considering what that part of the system is for I’m not going to loose sleep over it. Found my phone line, too. :M





To (hopefully) prevent any more settling, I poured some concrete under the new lines in three spots. The concrete is on undisturbed soil, so it “shouldn’t” sink.



I’ll be filling the hole in today, taking more care than the tank installers did. I’ll cut the new dump station pipe down once the grade is set around it.

So........all that is to say: I sure am glad I won’t have an audience while I’m dumping at home! :W

Just kidding of course. Feel free to come watch anytime!

:):)
  • No offense intended scoob. I’ve read enough of your postings to know that you’re not lacking in skills. I do enjoy staying busy with projects around the house, so that’s what I do. :)

    The pipe is simply a pass-thru for the sewer hose, it won’t have anything actually connected to it. I put it there because I didn’t want to cut the cinder block wall out when I put the door in. That would have put the threshold right at ground level, and I didn’t want to create a means for water to run into garage through that door opening. So, the doorway essentially has an 18” tall threshold, which would make it difficult to run the sewer hose over.

    The sewer hose will only be running through the wall pipe when I’m actually dumping, which typically only happens when we return from a trip. I try to dump my black tank sometime close to the end of a trip, so we never arrive home with full tanks. But, there’s always something to dump. It’s purely a convenience for me. Without this new dumping option, I would have to move the camper up to the dump pipe in front of where the cars park. Not a big deal, but it is a little extra work and the concrete apron in front of that garage bay isn’t level.

    :):)
  • NRALIFR wrote:
    JRscooby wrote:
    LOL, I'm pretty lazy. Instead of putting that pipe thru the wall, I would of just run the stinky slinky out the door for the short time it takes to dump.


    LOL, I’m pretty handy. :W

    Plus, I’m bored. I need things to do. :B

    :):)


    It is not that I lack the skill, but I fail to see the reasoning. Do you plan to use 1 hose from camper to floor, and another wall to drain? Or to work the hose thru the pipe? Both will put hose near the door, making a trip hazard. At least if you used the doorway it could be moved to side.
    Of course, it's yours, and you can be proud of the work done.
  • My driveway goes to a side entry garage, with my septic tank located at mid-point of garage along the adjacent front wall offset about 10’ from the house. If I back the RV to that corner of the driveway, the dump outlet is about 25’ from the inlet clean-out to the tank. Grade is about 2-3% uphill towards the clean-out. So how to dump?

    A “Sewer Solution”. I’ve got a hose bib on the other side of the garage doors, and a double length of Sewer Solution hose connected together is plenty to get from connection to clean-out. Water power handles the slope fine. And no construction needed.
  • JRscooby wrote:
    LOL, I'm pretty lazy. Instead of putting that pipe thru the wall, I would of just run the stinky slinky out the door for the short time it takes to dump.


    LOL, I’m pretty handy. :W

    Plus, I’m bored. I need things to do. :B

    :):)
  • LOL, I'm pretty lazy. Instead of putting that pipe thru the wall, I would of just run the stinky slinky out the door for the short time it takes to dump.
  • Yes, the purpose of the pipe through the wall is to pass through the stinky slinky hose and dump from where I park the camper.

    I wasn’t going to dig any closer to the garage footings because I know what’s under the ground there: Two corrugated drain pipes and our electric service. I wouldn’t have been able to get much closer anyways, so I kept it close to the tank lids that I already have to avoid driving over.

    Since I couldn’t have it inside the garage, a few more feet didn’t matter to me.

    :):)
  • I agree that new garage looks a lot better than the original. I'm confused though. What's the purpose of the pipe through the garage wall? Is it to dump the tank from inside the garage? If so why didn't you just trench the extra 10 feet and bury the line in the lawn? If sloped correctly it should normally be empty so I wouldn't think it a freeze hazard.
  • BobsYourUncle wrote:
    Great post! Nice work and detailed description.

    I like your garage renovation - wow what a difference from the first pic.


    Thanks Grit dog and Bob :B

    “Sorry son, I spent your inheritance on a garage!”

    :):)
  • Great post! Nice work and detailed description.

    I like your garage renovation - wow what a difference from the first pic.
  • Nice work! Thanks for sharing.
    Wish our septic was even close to accessible at home to dump into.
    When we got our first camper and went to AK with it, the house we rented had a septic clean out close enough to get the camper hose to.
    Soooo handy. No extra stops or going out of the way on the return trip to dump.

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