Advise on conduit

[CrashmanS]

I am running an air line, waterline and a cat 5 network cable between two buildings. I would like to bury a conduit to run these items in and would like the least expensive option that will last. Both the airline and water will be 3/4 pex. All is direct bury rated, but I want to save myself issues later if something goes wrong.
Any suggestions would be appreciated.

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[73RR]

Easy question....I'd run 3 lines of 2" Carlon. The trench will be open and the conduit is not crazy money.

 

[NORTON'S SHOP]

How far between the two buildings? The longer the distance, the larger the conduit. If it's a short run (20-30 ft.), I would use; at minimum; 4" pvc. This still leaves room if you want to pull something through later.

 

[CrashmanS]

How far between the two buildings? The longer the distance, the larger the conduit. If it's a short run (20-30 ft.), I would use; at minimum; 4" pvc. This still leaves room if you want to pull something through later.

The long run is about 100 ft.

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[NUTTSGT]

The least expensive option would probably be a 4" non-perforated field tile.

However, you might have an issue on how you do your transition where it comes out of the ground if you want it to look nice. You could always drill the appropriate sized hole in some tile caps and transition into some pvc conduit.

Personally, I'd run the Cat5 in a 3/4" conduit separate from the water and air. While you're running the Cat5, I'd go ahead and run a coax cable and a string to pull anything else in the future.

 

[johnnyradiant]

Like Eric said but if you have Cat5 and Coax I would not run 3/4" if you are going to leave a string for a future pull. Go upto atleast 1". If you think you are going to run a snake in it after the fact don't hold your breath - either put the string in now or plan on using the existing line to pull in anything new. I'd run Cat5E rated at least with an outside jacket.
I had just replaced a 20yr old 350' run of plain Cat5 that had about 100' of it strung up on a cable between two buildings. It still worked but the jacket was long since done and for about 80' into one of the buildings the jacket was full of water. The run still worked so it proves you can get away with a fair bit.

 

[Jackpod]

I would run 2 cat5 in 1 inch conduit. If the need arises you can get Baluns to send a video signal over Cat5. Cat6 is a better option as the cable manufacturing is to tighter specs,

Oh and the length limit to Ethernet cable is 295ft, performance degrades quickly after that

 

[rburke65]

What kind of waterlineareyou running? You have to decide how much insurance you want to buy, which is what you are doing. Always easier with the larger diameter PVC conduit, and I think id run 3 conduits. PVC conduits are realitively inexpensive. I run a direct burial water line..?..black, came in a coil, 1 1/4"..... 1 1/2"? had to have been 25 years ago and that is still good. I do not think you could pull it through a conduit. Maybe you could buy a longer coil of the water line and pull your wires into the water line, BUT as said you would have trouble connecting the ends or transistion. On second thought.....the water line would go right to a water fitting or Barbbed fitting as would the air, and you'd have no problem with the Cat 5, so you outdoor be good on the termination......never mind.