? about under ground utilities

Discussion in 'Landscape Architecture and Design' started by yardmanlee, Apr 8, 2007.

  1. yardmanlee

    yardmanlee LawnSite Senior Member
    Posts: 898

    buried electric lines are they usually in conduit ? reason asking I have to run a drain line across one or under depending on the depth of the buried line, I have had the utilities marked and know where they are but havent ran across electric lines before. anyone have experienced this before ?
    thanks for any imput
     
  2. Dirt Digger2

    Dirt Digger2 LawnSite Silver Member
    from PA
    Posts: 2,396

    no..main lines are not
    they are encased in sand or screenings so dig down very carfully and when you hit screening get out with a shovel and find the lines but be careful not to hit them with a shovel because you can scrape the lines and cause pre-mature failure...you might not even come close to them if you are running shallow pipe because they are usually 3 foot down...just be careful...hitting a power line and hearing that crack of the transformer blowing a fuse is not a good sound....neither is the bill when you get it..haha

    also utility locators most of the time for lack of better words suck..we hit a line not even marked and when guys come to mark it they mark it wrong sometimes..i say thats not where it is and they question how i know so much...i simply say because i dug the electric ditch...usually shuts them up and then they check the entire property...good luck
     
  3. dcondon

    dcondon LawnSite Silver Member
    Posts: 2,246

    We had underground run to our new house last year. It was not enclosed in anything or surrounded by sand. I also that ours was buried 36"s. Hope this helps and make sure you check with your local power co about depth in your area.
     
  4. DUSTYCEDAR

    DUSTYCEDAR LawnSite Fanatic
    from PA
    Posts: 5,137

    watch out digging with a ho near power lines as they arent always marked that great and if they didnt use the foil tape to warn u when digging u could hit them real easy
     
  5. gobbles2700

    gobbles2700 LawnSite Member
    Posts: 71

    Be very careful, everywhere is different. Here the old electric services are direct buried in sand, the new ones are encased in conduit which is buried in sand. Most new lines are also marked by a metallic tape about a foot below the surface(best case). Always watch the walls of your trench for the tell tale disturbance lines of a previous dug trench. I would suggest you use the Call Before You Dig guys' marking service (that you had done) as a starting point. Also if at all possible have someone act as a second set of eyes while your running the machine. There only job while the machine is running should be to watch the bucket.
     
  6. jervin38

    jervin38 LawnSite Member
    Posts: 29

    This was the electric line runing right off the transformer. The markout we had done was about 8 inches off. We had to run a new water line for this job and I think the electric line was about 36"-38" deep.

    2007-04-08_225747.png
     
  7. Dirt Digger2

    Dirt Digger2 LawnSite Silver Member
    from PA
    Posts: 2,396

    geeze i'de hate to see the bill on new lines being encased in conduit yet alone have to be the guy who has to pull all those wires through it
     
  8. gobbles2700

    gobbles2700 LawnSite Member
    Posts: 71

    The last one I was involved with just over 3000' and required 3 transfomers. the total job was around $35,000 not including the excavator & operator for the trenching. The conduit alone was right around $10,000. Pulling the cable is easy, you take fishing line and tie it to a plastic grocery bag all balled up, place it at one end and hook shop vac to the other end about a minute later you have your snake to pull an intermediary rope through 1000' of conduit. Then the electric company pulls the cable through with the rope.
     
  9. yardmanlee

    yardmanlee LawnSite Senior Member
    Posts: 898

    this is a new line that was run no more than 6 months ago and I called miss utility to mark all underground lines, there was only 2 electric and phone that I will have to cross. Im hoping that the electrical will be incased in some conduit for safety sake I will let ya know this evening what I find. thanks for the replys guys !!!
     
  10. Dirt Digger2

    Dirt Digger2 LawnSite Silver Member
    from PA
    Posts: 2,396

    you want it not run in conduit and heres why...conduit and screening are placed there to protect the wire...most places (besides CT) run one or the other. If you are crossing lines with screeenings it is much easier to locate because you have some type of warning that you are getting close, with conduit its dirt the bang...you've hit the wires. Conduit will help a little but depending on what your digging with it will break without you even knowing it.
     

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