Plumbing Slope Rule and Why it is CRITICAL 

If you are using 3" pipe or bigger, you can slope it at 1/8 inch per foot by plumbing code. I'm a master plumber and I've been doing it for 51 years. Also the p-trap is a trap seal by holding 2'' of water so sewer gases are unable to Escape into a structure.

Please do a test for too much slope. We are all told all the time that too much slope causes clog because water would leave the solids behind. But I have had several plumbers swear up and down to me that it's a myth. That they have never seen a clog caused by too much slope.

your show is helpful and informative. I run a hotel in such a cold place ( -50c) and have a lot of challenges with the plumbing systems. I found useful tips on how to prevent frozen pipes and improve the slope of the sewer line. Thank you for sharing and experience with me. I appreciate it!

LOL! Great experiment and very entertaining! Getting ready to re-plumb my tiny old house. This practical demonstration was helpful!

Plumber here-Actually there is a compound that has been created to duplicate the 💩. All toilets are tested with it. It Is somewhat like half cooked oatmeal. The other thing is called “ drain line carry “. Our plumbing system design takes this into consideration- for all layouts , it’s what we do. Venting, fixtures and fixture layout all are factors here. Pro tip- there is a limit to how far the solids will travel in any system even with the proper pitch. As I recall, it’s 45 feet with a 1.60 gallon flush, 2% pitch and 3” pipe.

I know he was eating a candy bar….but somehow I cringed every time….lol. Awesome video.

Absolutely loved Today’s Task today now to find my snickers snack..!

Suggestion - put food coloring in the water next time so you can see it.

WOW Joel, Just wow

Eating a little chunk of snicker before throwing into the experiment saved him from a big trouble. very smart guy.

I smell an experiment for a school project! Awesome!

Appreciated. Good demonstration. Keep it up

Great video thank you for taking the time

We had to replace ours line very informative and if anything your kids looked they where having fun learning

Informative and very entertaining- thank you

Ahahaha you're so dang funny! 🤣 I love how your videos are informative and entertaining at the same time!

Joel ty for video but can you also explain regarding the different ply toilet papers with the plumbing system??

hahaha you change it multiple times, i like the way you test things, consistency is the key.

reminds me of Caddyshack! super informative as always!

The experiment is very useful to understand the dynamics, Thanks:-) As I understand 1/4inch per foot is the slope for a pipe with 2.5 inch or less diameter pipe or is it the same for all diameter pipes?

Great video Joel!

Don’t forget to put the cistern water in on the flush

Good job thanks for the time and dedication this took. Seems like sometimes its higher up so that would help also wonder if a vent would have helped.

Great experiment it shows us what plumbing systems are like when the new houses are built great Job Joel I am from Wisconsin watching Bonnie’s channel for a long time and now this one so awesome!!! 👍❤️ keep up the great work Joel!

Interesting! And Thanks!

great work

I feel like this is an argument against low-flow toilets....

Question: Is there a meter or digital gauge that can be placed on the pipe to give you an accurate read on what the slope is?

I'll NEVER look at a snikers the same way. Hahahaha!!!!

You got an A+ for the demo. 😂

What slope would be considered too much?

Loved the bloopers!! 😅😅😅

This was a great video

I am about to run lines for a new adu... and your video gave me all the knowledge i need it... ear a subcribe

😂 ideally you check whole run with level as longs the bubble sticking out a bit on the other end of level that’s all it matters… toilet usually flushes the water at more faster phase than you pouring the bucket of water.. if you raise the soiled stack to high , you will have siphoning problems inside the toilet pan… you can do calculations referring to the plumbing water regulations, but most of time it’s experience how you use the level and how you install the soiled stack from the first place .

An update to this video would be the perfect opportunity to MythBust that over sloping may risk water over running and leaving solids behind. Is this true or old wives tales from the times of clay pipes + requirement of minimizing water velocity into municipality sewer lines.

I keep a much higher slope based on the length of the pipe because you lose the momentum, a toilet pipe is usually less than 24" in length to the vertical 4" drain.

I'm having a nightmare of a time with one of the bathrooms in the office building I look after with a bad slope and urea buildup.

Good demo. Improvement suggestion. Colored water to see better in pipe

Just to understand, when you say 1/4 inch for every foot => that is the height / depth of the leverage you need to position under the beginning of the tube? (like the black thing you put under it to simulate?). Thank you.

Please make sa video of too much slope. thanks.

I keep thinking off the baby Ruth pool scene on candy shack 😂

i love joel and ive noticed kids always hang around because joel has chocolate but if joel wasn't using chocolate the kids wouldn't be hanging around

This is the first time you didn’t know s**t! 😆 Had to say it. 💜

Great video but try venting the pipe 2-in vent pipe

LOL ,, everybody wants to take a bite of the snickers

I will never eat Snickers again.

Science Rules, Joel!

Bananas soaked in dark coffee work great 👍

So I have a 100 foot run drain to main sewer line.. so .25 for every foot means i need to drop it 25 feet..! Lol thats no possible.. im i missing something..?!

Listen. I know I'm a grown adult but for some reason the snickers and toilet paper made me chuckle. Great information as always though! I think you just wanted a snickers though lol

Once I saw the pile of Snickers bars, I knew this dude was legit... nice video. next time, color the water to make it easier to see or maybe put some glitter or something in it for that first plain water demonstration. Also, it seems like it would've been easier to find an extra toilet somewhere and rig it up on a table to do the demo instead of the ladder thing, heh.

People say that it’s 1/4 or 1/8 inch per foot required but that is code MINIMUM.

Enjoy those snickers!

Maybe put the snickers bar in before the toilet paper... i usually don't wipe before i poop LOL

Nooooo Did it have to be Sneakers? Why not Almond Joy!! 😂😂🤣🤣😂😂

Nice demonstration. Poor use of the Snickers, you should have ate them first 🤔😉

You should let the boys and Olivia participate in a more vlogs

We get it bro. We got it about 45 seconds in.

nice video, but I would have eaten those before the video started,, 🙂

😂 interesting video

Attach a 1" block to the end of a 4ft level, done!

Is this really a fair test, since there's no corn in a snickers bar to provide buoyancy? At least you took a bite out of it first. LOL!

That's not 2% slope, 2% is 1/4 per foot so I imagine you're just under 1% when the bubble is touching the line. I wish you had 100ft of pipe to video flow rates at different slopes for stormwater-drainage. I know the flow-charts are very accurate. For stormwater drainage a 4inch smooth-wall pipe actually needs 2.8% slope to achieve 3-feet-per-second velocity for self-cleaning capabilities. I have a stormwater playlist if you're bored with extra pipe to play with.

thats about normal ,small tank is a double flusher every time!

i really don't understand why you don't just have a bidet and less paper waste down the toilet

Id rather use 5% slope instead of 2%.

your not using enough water.

Need a vent lmao?

Not working cause your table too long and it's tubing so it's level on the back side.

ᑭᖇOᗰOᔕᗰ

you wasted the chocolate, never waste food like that...

Candy bars are heavier than poop.