Finally, a simple explanation of the general codes for slab rough plumbing! Thank you. Four years later.

Good job man. 2 things I learned last year: 1/4" rise is crucial - if you go any higher, you risk having the water run down the pipe faster than the solids do. That means solids will linger and eventually create snag points for further, snags and eventually clogging - possibly. Can reduce this by using the 1/4" rise.

You are right about simply explained videos not being widely available for the subject. Thank you for this video, very helpful.

We are looking to build next year and I've been looking for information on this. Thanks so much for sharing - much appreciated!

Great tutorial and information. It is nice to have the visuals and the specs as you explained them. Thanks a lot!

Thank you. I'm in the same boat. I'm building a barn and want to rough in. Thanks for all of the information! It helped a lot.

Great video and excellent tip about the second line on the spirit level, until seeing this I was vague about how to layout my under slab plumbing.

Well done video, Sir! Thank you. Gave me EXACTLY the info I needed.

Excellent vid! Great info for my upcoming project. Thanks a lot.

I’m a licensed plumber and this is mostly good advice. Just check the pitch on your pipe. 2in pipe should have 1/4” fall. 3in and 4in pipe should have 1/8” pitch. Also the location of your vent is off. If you’re going to be doing plumbing yourself you should consult with the local inspector before you run any pipe. Depending on your jurisdiction they should allow one free consultation per permit. Also if you need dimensions on the fixtures you’re going to be setting, you can request a submittal page from the manufacturer that should have the recommended dimensions

Excellent job describing this. Ty. Subscribed.

Great video, built my pole barn/house pre internet days. Used Charlie Wing "Visual Handbook of Building and Remodeling". Different size pipe have different allowed distance to vent. Whole house plumbing under slab. Still works great 26 years later. Your system I'm sure works fine. Glad to see the internet is full of hopeless do it your selfers like myself. Enjoyed the comments.

Thank you, very helpful, been looking for this info for a while.

So helpful I’m building my house thank you so much!!

Exactly what I was looking for… I owe you money!

Not sure if anyone has already made this point…? But you need to stay as closest possible to the quarter-inch fall per foot or rise, as you called it. Any fall that drops faster than a quarter inch per foot you will have liquid separating from solid, and that will create a clog!!!

Thanks for the great ideas !

I'm subbed. Keep these coming.im building a shoust or pole barn. All the help I can get I'll take

Thanks for sharing. Was looking for this information for a while! Good video. Mind the pitch!

Awesome video very informative.

Depending on state and city ..... some measurements and facts given may vary some....... for example, its ideal to grade trunk line between 1/8" to 1/4" of fall per foot. Any more and your liquids out run your solids leaving them behind which can build up and cause a stoppage. Good video ...... just check local and state regulations and codes.

It is insightful and practical. Exactly what I was hoping to find. So easy to follow. No nonsense in between about a cat dog or random useless knowledge. Keeping this video forever. You have an amazing gift for laying out the details so they can be easily understood.

Excellent help for our project. Thanks

Verrrry helpful!!!!!! and understanding..... great 👍

Great video, thank you!

Tanks for sharing the knowledge 🙂🙏

Thank you for sharing since I am doing something on a larger scale and u north where the lines have to be 4 feet underground to prevent freezing. This was a good start. Was wondering if I were to connect 3-4 washrooms and 2-3 sinks how many venting lines would be required. to be installed along the loop.

Great explanation. Thanks

wow, this video is three years old and today June 9, 2023 I am doing the exact same thing you're doing, and if I did not see this video I would've have done everything wrong. Thank you for the information I can't express how invaluable this video is.

Thank you helped a lot!!!!

Great video

Thank you!! Great explanation

Thanks man.. useful information.. thank you

Quarter inch rise because you start at the bottom or clean out and go up, not 1/4” fall. The vent on the shower is over pipe diameter for grade, will syphon out probably. And tough to tell in the video, but min 2” wet vent on toilets. Plus toilet is over graded. The poopoo will be sticky sticky on the pipes

The best video I have seen on plumbing. Lots of Information. Thanks man.

Thank you for helpful video. Not sure if anyone mentioned it, but the cleanout looks like it has an elbow to make the 90 degree turn. I think you want a long sweep 90, so a snake can easily make that turn if unclogging in future.

I'm getting ready to build and I want to do as much as possible on my own to save money, child support is killing me. This was a great video for what I'm planning on building.

As per code you have to have equal going through the roof on venting as you do on the building drain, e.g. 3" out 3" through the roof. Two 2" and one 1/12" minimum. Or one 3" and every other ties in to that based on the fixture unit size.

This is the video showing what you should not do. The slope into main drain from the shower create a S-trap which violate a plumbing code. You should put them on level. Now you need to dig the slab to make it correct.

I always like when plumbing vids are recommended to me! This was a nice find. I'm seeing a bunch of "too much slope" comments though. This does not apply to plastic piping. Go look inside your pvc/abs piping. Notice it's really smooth and slick. Now wet it. Its gets really slippery, and will not catch anything. Your toilet flushes with a little over a gallon of water. All that water will carry any solids all the way to your city sewer tap or septic tank with proper pitch. Some codes say atleast ⅛" for 3", others say ¼" for 3". Now go look inside cast iron piping. It's not so slick, and actually quite rough on the inside compared with plastic piping. The "too much slope" idea came about with this cast iron piping. Inspectors were worried that with too much slope, water would flow faster than solids, leaving solids behind due to the rough surface of the cast iron. Just something you may consider next time. You're fine with the slope you have. I'm sure you've never had any problems with this rough in.

Just so you know 1/4 rise is necessary so that some water remains in drain longer to keep paper from sticking to the bottom of pipe if you use 1/2 or worst 3/4 inch the water flows out too fast and leaves the paper behind to build up.

I did 18" between the centre line of my toilet and the side of my vanity, and it makes it so much when cleaning.

Thank you.

Thanks, now if only I could find a video on how to finish the vent

Best Video on rough plumb hands down! Thank you sir this is very much appreciated

THANK YOU

Thanks very much bro, maybe one day my U tube channel gonna boom

Nice info

This brings back memories! Trust me...in the dead of winter when you’re in the middle of building or a live stream (pun intended!), you’ll be wishing you had a toilet! LOL Are you going to put a sink out there at so you can clean parts and things?

can you put the clean up and the vent line outside the slab if you set up the shower and toilet both against the wall ?? TIA

Are you using Oatey Medium Clear PVC Cement? How do you find it for working with 2-3" pipes? In case you have also tried the Regular (viscosity) cement, which one do you prefer? I am trying to decide on which one to go with for 2-4" pipes and according to their description both will work fine as Regular can be used up to 4" and Medium up to 6".

Awesome video .. the one thing i will add (that i got from a plumber once) - is that you don't want to put excessive slope because when you do, the "liquids" tend to leave the "solids" behind. Thought i'd mention that just in case there's any truth to it :) Cheers.

Nice video! Easy to understand and to watch. Plumbing can be difficult at best for some people tackle. Other than a couple of code violations It should work. Might have a bit of a problem holding trap seals with the changes in height from the trunk line. Hope it all works for you. By the way 3” was a good choice if the septic doesn’t allow for a 4” inlet.

Ina ground up project, what determines if this rough plumbing goes under/within slab or on top of slab?

Thanks for the vid. Do yu hav any on setting the shower, toilet n sink all in line against the wall?

On your bottom treated grade board did you use a 2x10?

instant sub

Thanks

Your drain and vent going out need to equal the same area per code, minimum drain slope is 1/8" which needs to be engineered. You shouldn't use anymore than 1/4" because your liquid will flow past your solids. That way it will take it all down and not leave solids in your drain line.

How's it going boss Now I'm not a licensed plumber but I did a restroom for a client of mine and it turns out his brother-in-law was a master plumber the only thing I got wrong was according to him The 90 from the toilet he wanted me to put a long sweep 90 instead of a short 90 That's all I would change but otherwise it looks good!

You can use 90-degree long sweeps

The toilet is missing a vent. The shower venting will not work, you broke the plane. If the the 2 inch wye fitting was flat and not on a slant it would work. you do not need a 3 inch cleanout inside of a small cabin or house. The toilet is considered a cleanout since you can remove it. The overall look was good and layout looked straight. 12 1/2 inches from from framing to toilet center is perfect since most people forget about drywall when they say 12".

If you use over 1/4 per foot rise the water will flow quicker than the solids. So don't overkill the rise.

Not bad video I would have put my vent in between before the toilet. In Philadelphia you are aloud 1 fixture past the vent

Thanks for the information. It was really helpful. Where do you live? I live in Texas.

Can tell a lot of DIY plumbers in here think they know what there talking about 😂 looks good man should work out nice just try to avoid a flat vent. Hard to explain over a KZfaq comment but you can find it on the internet

Toilet should be 12"" to center of pipe, not edge

I believe it's rise because excavation typically starts at the lowest point so you would be rising to the finish

Where can I find the $182, 1,000 gallon holding tank?

if the main out horizontal pipes are to be sloped at a slight angle, then wouldn't the vertical connecting pipes be also a little slanted and not perpendicular to the ground? what is the technique to install vertical pipes perpendicular to the ground and yet the connecting horizontal pipes be sloped? i do assume here that vertical pipe bonding with horizontal pipe are properly angled at 90 degree to avoid leakage.

The vent is not off the main, it's off the branch so that means the toilet is not vented. But it's just a poll barn

combo fitting or wye wouldn't be better for venting this full bath?

supply lines?

is vent up to the code?

I think it might’ve been better to use a long turn 90 on that clean out

I would totally put in a toilet. When I am building, I always keep going until I absolutely have to go. I also recommend putting in a sink and counter so you have space to wash Lego or have a coffee maker and stuff.

Apparently Yer not very old…that’s a hell of a long walk once your digestive system, hips and knees start to go!…some old newspaper, a roll of toilet paper, and a wood stove for disposal works reall well!…so I’ve heard…😊 Thanks for the vid!

Where do you get the 1000 gallon holding tank for $182.00 ? The price has changed some but where did you find it?

1/4 inch Is good no need for over kill or above and beyond

Thats a far walk when you gotta go 😂

If you install a sand/cement shower or a Schluter shower there is an additional curb you may want. Their dimensions are larger than an acrylic shower base. That would likely be added onto the 30” dimension of the shower. And that would mean your toilet would need to be moved over another 4” or so.

What about a composting facility? It is quite a walk to your home from my vantage point of view. You know, once you start building even basic needs become 2nd place😄. Will you have a sink? Small kitchen counter? You know for coffee, washing hands or bricks. I would have a small cooler for refreshments. It promises to be quite cozy in the winter.

None of that plumbing would be legal in the state of Massachusetts. There's no vent for the toilet. The vent for the shower is choked off by the 45 degree bend. The only legitimate vent in that system is the two in line for the lav. In my state you would also need a full three inch Stack vent, which is not present.

One vent at the beginning? I thought they all had to be vented? Thanks

Plotting piping and prepping pole barn plumbing. Say that fast.. 😂

Hey sir , where did you find your holding tank , can’t seem to find any for that price

The way you have the toilet going up from main line created an strap or improper venting way prohibited

Do you have to be a qualified plumber to do your own rough in plumbing in Georgia usa?

Do you have a link to the holding tank?

Enjoyeyed your video. But one thing wrong. The 1/4” rise is so that the water won’t run off and leave the waste. You always need to stay with the 1/4” rise.

Here in Florida you need a wet vent for your toilet and It cannot be more than 5 feet away from it. please correct me If I'm wrong

Where can I get a 1000 gal. Tank for less than 200 ? Thanks

Where did u find a 1000 gallon holding take for 180$

The problem with going to steep over 1/4 inch per foot is the water will gush out and leave the waste, it needs to float.

$182 holding tank of 1,000 gallon. Where did you buy it?

Wow your on city sewer way out in the country? I'd put in a small bathroom if I were you

You could have ran the drain then use a Wisconsin for vent and catch your shower

30” showers are sold,but do NOT meet code.

Curbless shower?. Dont forget to account for curb👍

Always vent behind your furthest fixture Other than that Don’t listen to these KZfaq plumbers Looks fine