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PVC URINALS

PVC URINALS
We all have to pee sometime. Some go behind a bush. Some use a toilet and flush 5 gallons of water down the drain every time they pull the handle.

In this instructable I will introduce you to a simple alternative, one that uses less water than a flush toilet. Water is a resource that is becoming scarcer over time; one that we should conserve better.

PVC, polyvinyl chloride, is a thermoplastic. It softens with heat and hardens up again when it cools. It is easily available in most hardware stores in the form of pipe, and is not very expensive. Considering all the things one can make out of it, I would even call it cheap.

You will find several different urinal designs here. Grab a glass of your favorite beverage and read on.
 
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Step 1THE BASIC IDEA

THE BASIC IDEA
The basic urinal is composed of a cup to catch the urine, an "S" shaped piece of 1/2 inch diameter pipe that conducts the urine to the ground, and a buried 5 gallon bucket. The inverted bucket creates an air chamber. The urine enters the air chamber and filters into the ground.

The "S" bend in the pipe creates a small reservoir that holds the last of the flush water. This is the same as the trap under a sink. It prevents vapors from beyond the water reservoir from rising in the pipe and smelling up the room. The system is basically odorless.
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56 comments
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Apr 14, 2012. 10:39 AMyellowcatt says:
Urine makes a good compost activator, particularly useful if you are trying to compost things like wood chips.
A friend had an allotment with a small tool shed on it, his compost bin was near the shed and he had a diy urinal in the shed with a pipe going to the compost bin.
Apr 15, 2012. 1:31 PMyellowcatt says:
One of the presenters on a BBC radio gardening programme recommends the use of 'recycled beer' on compost, particularly on slow to compost nitrogen poor materials.
Here is his site: http://bobflowerdew.co.uk/
Oct 12, 2011. 4:47 PMIkilledKenny says:
I LOVE THESE INSTRUCTABLES!.....aaaand here it comes....However, this eco freakout about how we are running out of water is getting a bit ridiculous, even though in'stables like these are great....as is this one. But unless we are shipping water off this planet we are not ever going to run out of it, no matter how much those in power try to brainwash us into believing it. The only place it can go that would make it difficult for use to get it back is the poles.....but the much loved global warming kinda stops that....or climate change...or global cooling (1970's panic fest).

How about we just say that these great instables are made for use to better our lives by giving ourselves something to do....Now I must do as the wife demands and look at her puzzle.....good day. (sigh)
Aug 20, 2011. 5:33 PMtinker234 says:
hey with thestorage could i get a large old tank and use that
Aug 21, 2011. 9:40 AMtinker234 says:
ok
Jun 22, 2011. 4:45 PMGrapeApe226 says:
I live in the city and I wanted a way to let the guys that come by to talk car talk, get rid of some coffee or "beverage of your choice" without running in the house every 5 minutes. Same idea on saving water, plus my 'better half' was threatening to install a parking meter over the toilet and charge a quarter to flush :p

I was fortunate enough to have a previous owner try to build a patio BBQ and leave a 3 in. ABS pipe underground that lead from the side of the garage under the patio roof to the back bathroom on the house and danged if he didn't tie it into the cast iron pipe elbow under the back toilet (he also left a natural gas pipe and cold water pipe; it must have been one heck of a BBQ going in)!

I fashioned a foot deep locker over the urinal with twin doors that open into a privacy stall. I used an old urinal from a trash dump I found in great shape and plumbed it with a trap. So mine is actually going into the sewer. I used a self closing faucet above the urinal to flush enough water to clear the bowl.

Most sewer pipes under your home end at a clean out. My 1952 house has these clean outs aimed at a vent hole in the crawl space.

Maybe you can insert a threaded pipe into one of the clean outs, outside the bathroom and have it go through the vent to the outside of the house. Then build a sort of old fashioned 'water closet'. A out house with a half moon cut in the door would be a riot and visitors would think it fun to use.

Another tip for saving water is to keep a 5 gallon bucket in the tub. My water heater is on the back porch at the opposite end of the house as my tub. I open the hot water valve and let it run until I get hot water. Then shut it off and open the shower valve. It only takes two showers to fill the bucket and you can use it 2 to 4 flushes depending on whether you just stood or sat.

As for the upside down bucket, that's brilliant! You could use leach line rock for a filler if you think your pit would crush in. I did this method years ago and just put a little bleach down it once a month in the summer months. You could also buy septic tank enzyme from the market or RV supply store to keep it sanitary as need be. I had termites in the area and also put malathion down the hole now and then to kill any termites using the water as a drinking source. Please take caution if you have fruit trees or the like near by.
Jun 23, 2011. 5:54 PMGrapeApe226 says:
There are some great natural/organic pesticides at the gardening center. You can use natural methods with no chemicals. Like to keep aphids off your roses, you're supposed to plant marigolds in-between.

When I do put bleach or insecticides in the ground, its just a few drops per gallon, I don't go overboard. Just enough to taint the water to them underground bugs. As for bleach its self, it is in all green plants; chlorine. There are herb and natural remedies books that tell you to put a few drops of bleach in a glass of water and drink it to kill a body fungus you can get. Wikipedia says it's element 17 on the chart & "it is abundant in nature and necessary to most forms of life, including humans."

Yes, it's a "chemical" by definition, but in drop by drop use it will just kill bacteria on a "as needed" basis. It will neutralize and cancel out and not harm nature or your earth in your yard. As a pool owner I can attest to chlorine and algae doing battle and in the end, the algae is dead, and so is the chlorine. Test shows zero and time to add more. It's a salt, that's why you have to add acid to the pool after. Out of the bottle it can eat the hair out of your nostrils, but in correct amounts it is safe as anything.
Jun 25, 2011. 10:43 PMGrapeApe226 says:
got cancer? go to mexico, LAITRIL works. Chemo kills.

chlorine is not a nutritional need... "Importance of chlorine in human body?
In: Human Anatomy

Read more:
http://wiki.answers.com/Q/Importance_of_chlorine_in_human_body#ixzz1QMEpwrP5

"Sodium chloride literally keeps our bodies from drying up, moves our muscles, makes our meals matter, and attacks germs to keep us healthy."

There's more... much more. Google it.

Ice cream has deadly chemicals in it. We should ban that; I suppose.

I'm not going to get rid of my pool but, I am going to go out and pee in my pack yard now :)

Jun 29, 2011. 10:52 PMGrapeApe226 says:
Exaaaaaactally what I have been pointing out, TOO much of anything will kill you. I'm not trying to pick a fight here, just trying to answer the questions YOU posed earlier.

Hey, how am I supposed to take it when I expand on what I see in your pages here and you come back that pool owners contribute to acid rain. That's a weird comment anyway since all I said to put a few drops down your urinal. I think toxic waste would build up there as anywhere. Especially since your upside down bucket is a dead end.

Have you ever seen the 20/20 where they looked into the spreading grounds in large cities that feed their own underground reservoirs? They found out that there was an incredible amount of toxic and bacteria build up in the soil for thousands of feet outside the area, leaking into peoples fruit trees and gardens. People were showing up at the hospital with all kinds of cronic illnesses far above the average. And that was clean water! They have to now pump extra water so there is overflow so there is a place for things to run off. They can't let it just sit and fester.

What you have here is a small cesspit. They were outlawed decades ago for the very same reasons. Toxins seep up to the surface over time and cause much damage to property as well as humans. They are far from "green". It would be better to study up on septic systems and build and properly maintain small version if you are worried about chemicals that can kill you. Because just as salt and carrots, too much human waste in a concentrated area can....

k-i-l-l y-o-u
Jul 31, 2009. 6:56 PMmonkeys5150 says:
Very nice, in fact I will be doing the same when me and my buddies buy some land here in a few years. Just curious, do you have a system to take care of the other waste or just urine? I've seen some off the grid type toilets online but they are a bit on the expensive side.
Jun 18, 2010. 4:04 AMcaarntedd says:
Ecologically speaking, I think the production processes of cement and PVC have pretty large carbon footprints. I can understand a waterless or 1 cup flush setup for indoors, but an outdoor urinal? Composting? Just pee on a tree.
Mar 4, 2011. 7:02 AMArano says:
yep pvc is 100% recyclable
Aug 10, 2010. 11:12 PMgnomedriver says:
Lemons are said to grow well when fertilised with urine. One idea could be to feed the line out to the lemon tree and place the sump near the roots tree’s roots. Then have great lemons for one’s gin and tonic.
Dec 13, 2010. 9:31 PMcorey_caffeine says:
infinite loop of deliciousness
Sep 24, 2010. 8:32 AMebuesing says:
Actually a standard commode flushes with 1.6 gallons per flush, and lots of urinals, and new water efficient toilets flush with less.

Still a nice idea for a deer lease, or treehouse. Someone should forward this to Tarzan, and Gilligan.

:)
Sep 13, 2010. 4:05 AMsamchamb says:
nice instructable , I can recomend the "liquid gold" book as good firther reading , the author has a web site : http://www.liquidgoldbook.com/
Jul 6, 2010. 10:34 AMValster says:
I drilled a hole in my shed floor, inserted a length of PVC pipe, topped it off with a funnel and, voila! A private place to pee without tracking mud into the house. I have to admit yours is more attractive.
Jan 21, 2010. 2:04 PMsunnycanuck says:
 Have you looked into a waterless trap. You use a liquid less dense then water in the 'S' trap. The less dense liquid sits on top of the water so that flushing is not needed (effectively a grease trap). The companies that make these sell a liquid for the job, but I've been wondering if oil would work as well. 
May 8, 2010. 11:05 AMSWV1787 says:
I found a website that says it's "Sealant" liquid is oil so I don't believepeanut oil, olive oil, or vegetable oil would be at all out of the realm of possibilities and it is all natural so no worries about spillage... Plus building a waterless trap out of PVC would be easy... a weekend project at most. Toss in a hydrolic ram pump and you could have an all PVC Second story lavatory.
May 16, 2010. 1:57 AMjgood4u says:
While the above illustration for a commercial waterless trap is suitable, it should be just as feasible to use your 'S' trap design. Start by pouring water into the trap to fill it to overflowing, which shouldn't take much. Then add a liquid that is lighter then urine (water), such as an oil, perhaps like mineral oil. You want something that won't turn rancid, won't evaporate, is non-flammable, and won't stink now or later. You will have to replace it from time to time depending on use, a few times per year. The commercial cups are replaceable because of a build up a crystals, but for your design, a flush of water, and maybe a cleaning brush should keep it working for a good, long time. Now that's saving water, and you don't need to plumb or carry water anymore!

Apparently, you were not planing to have the drain accept toilet paper in the first place, so the women who wish to wipe, will need a basket near by to toss the waste paper.

It is also interesting to note that if urine can be keep separate from the poop, the poop will not stink near as badly as when they get mixed as they do in most pit toilets. Therefore, if your solid collection device can separate the solid from the liquid, you can reduce the odor significantly.
 
Feb 9, 2010. 9:04 AMsonicdrive says:
i say peeing on  a bush is easier and less work and ugly pipes all around but that is my thought
Feb 2, 2010. 3:54 PMsmokehill says:
Excellent instructable !

For those that live in an urban environment where this may not be practical, I suggest you consider urinating in your bathtub, where "flushing" takes only a couple of cups of water, and the faucet is (usually) right above the drain/urinal.

Even though I live on a farm, I did this as a temporary measure when I had drainfield problems in the winter and was desperately trying to put the absolute minimum liquid into the system.  Sounded a bit strange & unsanitary at first, but it really isn't.

I figured I was saving almost the whole 5-gallon flush each time, and since I was on Lasix, I was hitting the bathroom almost hourly.  Massive water savings, when you add it up.

After I sorted out the leaky connection in the distribution box, I just kept using the bathtub since it seemed like a good idea anyhow.  When I'm outside, of course, I use the same system as my dogs do ... and no flush necessary.  Just don't hit the same spot every time, or it will "burn" the grass eventually.

Certainly a more practical way of saving water than Al Gore's worthless "two-gallon flush" toilets.  Every one I've ever used has been a piece of .... well, you get the idea.

Ideally, I'd figure out a way to use the gray water from the sink to "flush" the bathtub drain ... but I haven't figured a practical way to do that yet.  And it's a minor savings in water anyhow compared to skipping the flush-toilet.
Jan 21, 2010. 12:08 PMjuanangel says:
Excellent. Just round the edges, in case a a drunk drop or bow, or a kid running by. In case that water is not avaliable for flushing, use those detergent jugs with a push button and a piece of hose. Water will last long since no one likes to push the buttom for long. Great idea for the outdoors.
Jan 21, 2010. 7:54 AMthe rural independent says:
Great Instrucatble and some really great tips fro other commenters.

One could place one of these adjacent to an area where you have a problem with deer gnawing away at your plants and it should be a nice deterrent.  (well maybe not all that nice!)

Thanks to all!!

www.theruralindependent.com
Jan 19, 2010. 2:54 PMold_code says:
"You had me at ... PVC  Urinal".

Great Instructable; makes me want to live somewhere 'less socialized'. I've told/kidded my wife that the next house will have to have a urinal in it.

I went to your site at www.angelfire.com/in2/manythings, and realized that my father-in-law (a cement fiend) would love your projects.

Thanks; this was a project well worth reading, for the variety of information that you've presented.
Jan 15, 2010. 8:48 AMgeodez says:
a urinal doubles as a hand-washing sink?
Jan 15, 2010. 4:30 PMgeodez says:
yes it is.
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Author:Thinkenstein
I'm a refugee from Los Angeles, living in backwoods Puerto Rico for about 35 years now and loving it. I built my own home from discarded nylon fishnet and cement.