running conduit under a walkway....again!


  #1  
Old 04-02-03, 01:03 PM
laneie
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Question running conduit under a walkway....again!

I have run a piece of conduit under the walkway...but surprise....I went on an angle so the pipe is somewhere below the walk...I have now dug a trench so I will be pounding somwhat straight. Any other suggestions? Also is there a way I can run the wire through the pipe BEFORE I run it underground without cutting the wire by pounding the pipe?
Thanks for the help!
 
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Old 04-02-03, 01:27 PM
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How wide is the walkway? Have you considered using a jet nozzle on a piece of pipe, connected to the garden hose? Instead of "pounding" the conduit through, you just let the water pressure bore the hole for you. Than insert the conduit.
 
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Old 04-02-03, 03:22 PM
laneie
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re: conduit using jet spray

my walkway is 4 feet wide. I havent heard of the jet nozzle... the ground is pretty rocky...would this still work? All I do is attach a nozzle to my hose...sounds like a great idea but do you think it would work with my coniditions? The ground is clay....with rocks....also this runs between 2 trees.....( large roots) anyway, I appreciate your help
 
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Old 04-02-03, 03:44 PM
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I can't think of any reason it wouldn't work. You can use sections of galvanized or black pipe, whichever you happen to have handy. Attach a hose to it and start pushing, moving it back and forth. Once you reach the end of that length, shut off the water and screw another length of pipe on. Turn the water on and go again. Keep adding pipe length until you come out the other side. Of course, it is a little wet and muddy, but I believe it would be easier than trying to pound a pipe through. Just try not to wash out from under the walkway to much.
 
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Old 04-02-03, 04:01 PM
J
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When I've done it (for water lines or electrical lines), I've used schedule 80 PVC conduit. I glue a female hose fitting on one end, and a nozzle on the other end. Dig a trench on one side and turn on the water. In good conditions, I've gone under a 20-foot driveway in five minutes. In very heavy clay, I sometimes can't get under a four-foot sidewalk at all.

When you get the PVC through, cut off the fittings and leave it there and use it as your conduit.

Good luck.
 
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Old 04-03-03, 08:18 AM
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There you have it, theory vs application...both say it will work. Wish I had thought about using PVC and leaving it in place!! Its TRUE! Old dogs can learn new tricks...

Thanks, John
 
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Old 04-04-03, 12:14 PM
laneie
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well.....I have to give up!!! After several days of trying I am breaking down and calling a pro!! The water worked but I must be hitting large tree roots or rocks becasue I can only go so far and then....dead stop!! So thanks for all your help it should have worked however I am going between a couple of old trees and clay soil...filled with rocks!!! Thanks again
 
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Old 04-04-03, 01:23 PM
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Man, I really hate when that happens!!! Wish there was a way to help, but you ar probally right, rocks and roots. I don't know if you can rent a horizonal drilling rig......I guess some things were just meant NOT to happen.
 
 

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