Going Under Roads

Discussion in 'Irrigation' started by cush, Dec 4, 2006.

  1. cush

    cush LawnSite Senior Member
    Posts: 352

    I am doing a bid for a revamp on a TBOS system. I am going with a two wire system but will need to run the wires under the roads in the subdivision. What company should I call or can I do it myself. I would like to run some one inch Polly under the roads and then pull the wires through. There are nine roads total about 100ft wide to go under. Any other suggestions would be helpful.
     
  2. Dirty Water

    Dirty Water LawnSite Fanatic
    Posts: 6,794

    You need to get ahold of a company with a directional bore.

    Most utility excavation companies have one.

    I'd use SCH 40 grey conduit to keep someone from thinking its a waterline and cutting it open.
     
  3. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    Like Jon says... put the wire in conduit. If problems occur in the future then the wire can be pulled out of the conduit and new wire fished through although that's not normally where problems will occur. Poly may end up collapsing under vehicle weight and shifting soil conditions.
     
  4. cush

    cush LawnSite Senior Member
    Posts: 352

    Thanks for the replies. What would you guess it would cost to go under all 9 roads?
     
  5. Dirty Water

    Dirty Water LawnSite Fanatic
    Posts: 6,794

    Hayes, They are using a utility grade poly for cable and telephone drops now in some areas. Its got a real heavy wall (similar to NSF 200 PSI poly) and is orange. Its advantage is easier fishing.

    I'd never run wire in a black poly, as I've cut open "water" pipe before and found wires...

    I did some excavation last year for a power service line and the utility linemen layed a wire that came prefished inside of a 2" Poly conduit. It was black with a large red stripe.

    So, don't cut those either :)

    Cush: I'd say to expect somewhere around $10-$15 a foot. Most of the time they expect you to have a 6' x 24" deep trench ready on both sides of the road as well. If they use an air mole instead of a directional bore, you don't need as big of a starting trench.
     
  6. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 13,317

    Does this price include putting in the poly? I have seven valves that have been stranded away from the controller may be cheaper to go under a couple streets than use those battery devices at $150 a pop?
     
  7. hoskm01

    hoskm01 LawnSite Fanatic
    Posts: 5,690

    Can someone enlighten on "TBOS." Doesn't ring a bell here. Sounds like an interesting project.
     
  8. Dirty Water

    Dirty Water LawnSite Fanatic
    Posts: 6,794

    I think it would be cheaper in my area to bore the roads then to spend over a grand on battery operated valves.

    We use Nelson Solo-Rain valves when we HAVE absolutely no other solution. I like them better than the rainbirds, and they are less than $150.

    Your area may be different. Look for a utility excavation contractor.

    The TBOS Rainbirds attempt at a battery operated valve operated by a hand held portable controller.

    You would use the controller to program the valve, and then unplug it from the valve and store it somewhere else.

    http://www.rainbird.com/landscape/products/controllers/tbos.htm

    Its a little clunky, and I like hunters WCC system better.
     
  9. hoskm01

    hoskm01 LawnSite Fanatic
    Posts: 5,690

    Interesting
     
  10. PurpHaze

    PurpHaze LawnSite Fanatic
    Posts: 5,496

    You'll have to get a bid from someone on the boring and then compare that to what it would cost you to go battery operated instead. The city here uses the Irritrol IBOC controller (basically an MC-Plus that runs on batteries) in a lot of places (such as street medians) where there is no power. These are a little spendy too. You'll just have to compare prices and then decide what is best for you and your customer.
     

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