How Does Perforated Drainage Pipe Work?

How Does Perforated Drainage Pipe Work?
Buy Perforated Pipe: www.frenchdrainman.com/store/
Our subscribers are crazy intelligent. I just love it. You guys ask the best questions and they're legit. So here's one that I get asked a lot, so I'm going to explain it. People are always saying, they're always saying, how does the water move in the pipe when there are all these holes because of the thought behind it is those the water just fall out as easy as it goes in? So I get that. That's legit guys trying to figure out how this pipe works.
Don't screw yourself into the ground, man. It's this simple. We wanted these big outlets for two reasons. One, the water goes right into this pipe and this pipe acts as a giant void. Just like we go up in size on aggregate. The larger the aggregate, the bigger the voids. Say you don't have big aggregate available to you. Say you get stuck using small stone. Well, then it's even more important that you put two pipes in because you create the voids. This is a giant void, two, four-inch pipes. That is a monster void in your system. And I'm gonna teach you some more stuff here in this video real quick because the guys want to start putting the stone in.
Now over here, we're going to have a Tee and the discharge is going to go to the storm drain. With these big inlets in the High Octane, the water collected in this pipe just passes through into this pipe. Now we're going to put a Tee here, but that's how we do it. People always say, Hey, what's going on here? You're not connecting these two pipes. Well, it's a big void. It's like having monster aggregate and you'd have to have 12 inch or 18 inch, you round rock to great the kind of voids we're creating. So that is what we do here.
Now see how big these voids are? Any dirt or contaminants will pass right through these voids. They'll pass right through these pipes. Can you believe that? It's awesome. That's why we had Baughman Tile open up the inlets on the High Octane. [...]
Read More: https:/www.frenchdrainman.com/how-perforated-drainage-pipe-works
=======
French Drain Man - Michigan’s Yard Water Drainage Experts. Masters in the art of constructing contained French drain systems & curtain drain systems that and fix your yard drainage problems for years to come. Over 30 years’ experience in solving yard water drainage problems in Oakland, Macomb, Lapeer, and St. Clair Counties.
French Drain Man / Sherwood Landscape Construction, LLC
122 S Rawles St
Romeo, MI 48065
248-505-3065
www.frenchdrainman.com
www.macombcountylandscaping.com
Follow us on:
Facebook: / frenchdrainman
Instagram: / frenchdrainman
How Does Perforated Drainage Pipe Work? #frenchdrain #drainagepipes #frenchdrainman

[@garystevens4303]

So you never explained why / how the water never exited the bottom of the pipe. Like you said its full of holes. Is the cloth waterproof. Do you always need that? Can you lay the pipe directly on to the soil?

[@user-yb7hi9qz5q]

The reason water flows through the big void is because of what is known as. Relative permeability. The bigger the void the faster the flow. A pipe is one big long straight void where water can accelerate. If water goes through gravel it has to wiggle about to go through and therefore goes slower . If it goes through soil it goes quite slow and if clay doesn’t go at all.

[@FRENCHDRAINMAN]

Thank you for commenting and contributing. kzbin.info/www/bejne/oaK4f6GZZc9rgcksi=9NEc4ZvO40y-R9du

[@ForViewingOnly]

It still seems to me like a pipes with perforated sides and top, and a solid bottom, would drain the water away more effectively. I need somebody to explain in scientific terms why this wouldn't be the case.

[@mae2759]

FDM, you should do a video on why you put the pipe on the bottom of the trench. I now realize that most tutorials on the internet say to add gravel first is because the pipe they talk about only has holes on the bottom (like solid PVC). So if you put that on the bottom of your trench, it will clog and the water will never get into the pipe. The pipe you use is perforated all around, so if the bottom clogs, the water still has the rest of the pipe circumference to flow into the center. I did a little bit of both when I did mine (since I didn't have this epiphany until after). I put a super thin layer (like 1 rock thick, like you spread them out on a cookie sheet), then put the pipe in, then filled the rest with stone. I'd like to send you pictures. Dug out the old home owner's TWO failed french drain systems. Socked pipe!

[@andrewgill8115]

Thanks for explaining this. doing my first French drain and couldn't get my head around all the holes and how it transfered water. lost sleep for no reason haha.

[@user-yb7hi9qz5q]

I note FDM hardly mentions the fabric but does describe the effect. The reason the pipe runs dirty at first and then runs clean is the fabric. It allows water to flow quickly through it but doesn’t allow big particles through from the soil. It is in fact a filter. True some of the initial dirt is from the bad drainage stone but the main is the first bit of soil which goes through the fabric and then stops because of a structure that builds up in the soil called a filter cake. If the fabric wasn’t there the soil would keep piping through into the drain and the ground would settle.

[@FRENCHDRAINMAN]

Thanks for your help. You explained it very well. kzbin.info/www/bejne/nIusm6GLpLCjlassi=0GZkQneHfC8CL0ll

[@Luke-A]

I know nothing about this but I'd guess that water doesn't leave the pipes because it's following the path of least resistance, gravity is pushing the water down once it gets to ground level its easier to travel along the pipe than it is to keep moving through the ground beneath the pipe.

[@sethbrownell3563]

Dear Mr French Drain Man, I have a dry well on the side of my driveway 2 feet by 5 feet deep it has a grated top I have sandy soil so it drains good in the summer. My issue is winter I live in Vermont and it freezes then when we get the odd rain storm in February my driveway floods and water gets in my house. There is no storm drain to connect it to nor is there a place to let the water drain down hill. I’m wondering if building a French drain that is connected to my dry well would help the water drain out of the dry well?

[@Makebuildmodify]

I'm installing a drain with a deep trench, 3' or 4' deep. Would it be better to use two 4" (25.12 sq. in. cross section) pipes or one 6" (28.26 sq. in. cross section)?

[@guyr7351]

pye R squared is your answer, 6 inch pipe is 9 x 3.142 = 28 sq inches cross sectional area, for a 4 inch pipe = 12.5 sq inches each pipe = 25 sq inches total area. Same principal shows how 12 inch pizza much better value than two smaller ones 😁

[@Makebuildmodify]

@@guyr7351 well, i was more concerned with the outside area of the pipe relative to the total of the cross sections. The surface area to cross section ratio for the two 4 inch pipes is 150% of the 6" ratio.

[@papitsunami464]

Do you need one if the retaining wall is not very high, say only 20cm high?

[@antonios4926]

Thanks for the video. Is this pipe twinwall or single?

[@FRENCHDRAINMAN]

Heaviest single wall Pipe available. Custom run.

[@paulrooney982]

I love this guy. He's great.

[@TLC1972ify]

Thank you for you explanations on french drain topics. In this video I don't understand why you run the downspout water to a pop-up, when it looks like you could run the solid yellow pipe another 50-100 feet to the storm drain. Why not run the downspout water to the same storm drain as the High Octane pipe?

[@LichaelMewis]

Loss of velocity and then you need to worry about the pitch for the whole length of the run, so that you have the appropriate amount of fall.

[@markreyman9899]

And less digging. The perforated pipe will pick it up just as easily.

[@c50ge]

Basically you are making sure the puddle is only under ground which keeps the surface dry. When the puddle becomes deep it runs out the end.

[@FRENCHDRAINMAN]

kzbin.info/www/bejne/oaK4f6GZZc9rgcksi=mfKPEehtFFLLgr47

[@protectork9831]

my contractor put this for down-sprout near the foundation. it is under concrete and has gravel . is this good idea.

[@FRENCHDRAINMAN]

Watch "Dos & Don'ts - Downspout Drain in the North Where Winter is Winter [ Complete Guide ]" on KZbin kzbin.info/www/bejne/lYeUlpmAgpJrr68

[@kerematamer3226]

Hi I leave in aus I leave in slope so each time it rains water goes underneath the house know iduged to footings the pipes comes with the socks on it so iam sure should uput geotextile o it before I put the gravel on it

[@garystevens4303]

Yes, is the cloth / pvc essential? That's also my question?

[@asadandrew]

My downspout is connected to a perforated corrugated pipe, should I change it to a solid?

[@markreyman9899]

Yes because the perforated pipe is acting like it would if it were a leach field. It’s leaching the water into the ground. Had the same situation at my home from the previous owner. Changes it to a solid because the ground was so moist and it is right next to my garage foundation.

[@PlusUltra43]

Please help me figure this out: the "real" chanel that drives away the watar is the "tunnel" made out of water proop membrane? We just add and then cover the perforated pipe so that we have more void (volume, space) through which the water will go down? Because if it was all just gravel & membrane, then the "tunnel" could transport less water through it?

[@FRENCHDRAINMAN]

kzbin.info/www/bejne/oaK4f6GZZc9rgcksi=KjKsH9QUHhWBLg4s

[@PlusUltra43]

@@FRENCHDRAINMAN Thank you, I've seen that video also, but could you answer my questions from the comment above, just to make sure I've figured this out correctly?

[@tr3vorb438]

Seems the trench carries the water. Will a wrapped trench with large rocks do the same?

[@FRENCHDRAINMAN]

@Funky The Pipe is a giant VOID that water moves through massive amounts of water

[@omalfitano2102]

Hey FDM, thanks for all your videos, I’ve learned a ton! I’m about to DIY the interior of my crawlspace. One think I’m still unclear about is grading. I understand creating voids will make the water pass into the pipe, but how important is the grade to get it moving?

[@FRENCHDRAINMAN]

@@omalfitano2102 I would use our 4oz fabric and 2 pipes side by side of High Octane. Then put 1"-2" stone on top. If you're not encapsulating the crawl grade does not need to be detailed

[@keefmack]

@@FRENCHDRAINMAN What I wanted to hear explained was how does a pipe with holes 360 degrees around it move water rather than the water running out of the bottom, particularly if it isn't a huge flow of water? For instance if this pipe were behind a retaining wall and the pipe was above grade, would the pipe keep water coming into from passing right through and out the bottom and out of the wall below the pipe?

[@garystevens4303]

@@FRENCHDRAINMAN but why doesn't it piss out of the holes. How does it move without some coming out?

[@VampireOnline]

Beyond directly from you is there a name for these pipes so I can check from local suppliers to get it?

[@FRENCHDRAINMAN]

@Vampire We are the Distributor for the United States go to Frenchdrainman.com

[@VampireOnline]

FRENCH DRAIN MAN alright thanks. Delivery fee is just out of range for me and is what is holding me back at the moment.

[@FRENCHDRAINMAN]

If you are buying 4 rolls or more you can contact scott @ [e-mail] and get a custom quote to see if we can make it work for you

[@andrewm4767]

So the water does stay in the pipe but it also transfers into the other pipe? This sounds like witchcraft to me

[@FRENCHDRAINMAN]

kzbin.info/www/bejne/oaK4f6GZZc9rgcksi=auSU6RfEtoXj7PkH

[@joshuatonecha871]

That's a waterproofing contractor for you. 6 minutes to say nothing. I would have loved to hear the "why this costs 15k" speech. "Well check out all the holes and colors!"

[@FRENCHDRAINMAN]

Watch "How Does Drainage Pipe With Holes Really Work?" on KZbin kzbin.info/www/bejne/oaK4f6GZZc9rgck

[@homeward34]

You went to answer the question every1 has, how does the water that enters the drain not simply spill out but u didnt complete the answer

[@garystevens4303]

Exactly!

[@markmagner8000]

he dum dum

[@pwhnckexstflajizdryvombqug9042]

It doesn't flow out the bottom because of osmosis, water wants to travel to the most open area, which is the inside of the pipe, and although a tiny bit will flow out the bottom, the water is attracted to the inside of the pipe.

[@tylerfred7514]

The answer we actually wanted

[@CogitoBcn]

It's nothing related to osmosis. Where is the semi-permeable membrane needed to create osmosis?

[@normanwilson9734]

Completely USELESS explanation. Luckily a commentator notes it is "relative permeability" that causes the moisture to drain away; I thank him for that explanation.

[@FRENCHDRAINMAN]

kzbin.info/www/bejne/oaK4f6GZZc9rgcksi=E7wtrJcqxNF7mlOp

[@The_El_Guapo]

This is consistent for all his videos. Clickbait titles with completely unrelated and useless information.

[@Tom-cj1ip]

Why not just let water be water? Heard of a wetland?

[@FRENCHDRAINMAN]

Most people just want to direct the water to a wetland not have one for a front yard

[@freebees1413]

How does the water drain, you asked the question and don’t even answer. How about you show a video of your system working during the rain.

[@FRENCHDRAINMAN]

Watch "French Drain Results!" on KZbin kzbin.info/www/bejne/hXLEqouCgaifnKM

[@antshares906]

He’s not even French

[@FRENCHDRAINMAN]

kzbin.info/www/bejne/jIu3dHWbfruKecUsi=_ykobTh1HXUHwD_3