Culvert Advice -- Plastic vs. Galvanized

Plastic is better than metal for several reasons. First, it will never rust out on you. EVER. Second, get the type with the smooth inner wall. It stays cleaner and doesn't hold silt and debri. As for strenght, both rely on preasure from the fill material being equal on all sides. You need a certain amount of fill on top based on the size of the pipe you install to reach maximum strength. For an RV, you will need this. For a car or light tractor, the amount on top isn't as important.

Since you want to create a crossing over a ravine, go as big as you can. That ravine was created by allot of water. The size of it shoud tell you the amount of flow you have to deal with. 24 inches is a huge pipe and should be able to handle most situations, but there is a reason they make bigger pipes and/or install two side by side.

Putting grates in front will cause more problems than it would solve. Small leaves will wash right through it, but with a grate in front, they will create a dam. It's very rare to see one along highways or anyplace that they are put in profesionally, so I'm thinking you don't need one. I don't have any on mine and so far haven't had any issues.

Backfill is usually with clean soil, but sometimes sand is used instead. Rock isn't any good because of the voids and dificulty in getting it all compacted. At the entrance to the pipe you will need to put something down to stop erosion. I've used sacks of cement for this with good results. Of course, it's not as attractove as rock. If you use rock, be sure it's big enough not to wash away or let the water through it. Small rock is useless during a heavy storm.

And always plan for the very worse that can happen.

Eddie

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Easy way to connect galvanized culvert to dual wall plastic

JDPlowboy

Posted 7/5/ 17:40 (#)
Subject: Easy way to connect galvanized culvert to dual wall plastic

sw MN

We are connecting 2 driveways and filling the ditch in between.
1 driveway is 18" galvanized and the other is 16" galvanized.
What is the easiest way to connect 18" dual wall plastic to 18" and 16" galvanized culvert? ng01

Posted 7/5/ 19:18 (# - in reply to #)
Subject: RE: Easy way to connect galvanized culvert to dual wall plastic

fredericksburg, va

improvise! Take a 30 gal. chem, barrel butt the two pipes together cut appro hole in chem barrel. You can always use an old rear tractot tire tube. RickB

Posted 7/5/ 20:09 (# - in reply to #)
Subject: RE: Easy way to connect galvanized culvert to dual wall plastic

Lincoln County. NC

Lincoln County. NC

I hope the 18&#; pipe is downstream. panther

Posted 7/5/ 20:19 (# - in reply to #)
Subject: RE: Easy way to connect galvanized culvert to dual wall plastic

Center Valley Wisconsin

The county did something similar down the road from me and filled in the gap with concrete.

Edited by panther 7/5/ 20:20

John Smith

Posted 7/5/ 20:53 (# - in reply to #)
Subject: RE: Easy way to connect galvanized culvert to dual wall plastic

South Central Illinois

Plastic band connector and sack Crete ryank

Posted 7/5/ 21:03 (# - in reply to #)
Subject: RE: Easy way to connect galvanized culvert to dual wall plastic

SE Nebraska

If you are looking for more details, kindly visit Galvanized Corrugated Steel Culvert Pipe.

I did a similar thing. Galvanized was down stream. Plastic up stream. I just jammed together best I could and wrapped joint with some thin rubber belting/ mat material. It's held just fine razorsedge

Posted 7/6/ 05:23 (# - in reply to #)
Subject: RE: Easy way to connect galvanized culvert to dual wall plastic

Fowlerville, Mi

Fowlerville, Mi

The county here uses spray foam to fill the gaps then wraps with fabric. Holds up pretty well. AGB

Posted 7/6/ 07:53 (# - in reply to #)
Subject: RE: Easy way to connect galvanized culvert to dual wall plastic

Mid-Michigan

If you have a tile plant near you, almost all of them will make a reducer from 18 to 16. Tha galvanized wont fit quite right but some spray foam or rapping it in visquine (don't know how to spell that) will take care of it. John Smith

Posted 7/7/ 00:30 (# - in reply to #)
Subject: RE: Easy way to connect galvanized culvert to dual wall plastic

South Central Illinois

Wrap the connection with roofing shingles,
The heavy weight laminated shingles work best. ads-pipe

Posted 7/8/ 08:37 (# - in reply to #)
Subject: RE: Easy way to connect galvanized culvert to dual wall plastic

NC Iowa

NC Iowa

Mar-Mac coupler is the best way. Your ADS or Hancor dealer will have

 

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John Smith

Posted 7/8/ 09:44 (# - in reply to #)
Subject: RE: Easy way to connect galvanized culvert to dual wall plastic

South Central Illinois

Is that - Heat Shrink - Elastic - Zip Tie ?
How does it work? ads-pipe

Posted 7/19/ 10:13 (# - in reply to #)
Subject: RE: Easy way to connect galvanized culvert to dual wall plastic

NC Iowa

NC Iowa

Sorry I missed your question..

It is like an inner tube with a sticky adhesive and a woven material in it..

Depending on size it attaches by hose clamps or ratchet straps.

Sitting in the sun gives it that look.

It isn't coming apart

We use lots of these on transition fans on Grain Air piles of Corn. [Going from fan to pipe] After 1 year we usually have to cut them off.

Edited by ads-pipe 7/19/ 10:17

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