Hand dug well.

[Customweld]

Yep, airports are bad. Schools are also horrible for unknown/unmarked utilities. We would hire a third party locator for these sites because asbuilts were not kept up to date and volunteer projects were never documented. As far as USA dig is concerned, they do have a margin of error and when close hand digging or hydrovac is the safe route for sure. Worked on a four year hospital project several years ago, by contract ALL Sensitive U/G utilities were to be located by either hand digging or hydrovac. Med gases, com lines, power, chiller, h2o and so on .....

Hydro vac has come along way. The cost of a digger and pipelayer handspooning looking for ubo's adds up in a hurry.

 

[packer58]

Hydro vac has come along way. The cost of a digger and pipelayer handspooning looking for ubo's adds up in a hurry.

Yes, heavy construction is an expensive game for sure. When i was running work i had access to the jobs the estimators were working on pre bid, i would have them increase the "pot-hole" budget on jobs i felt needed the extra time/expense locating utilities. Was never enough most of the time ..........

 

[Customweld]

Yes, heavy construction is an expensive game for sure. When i was running work i had access to the jobs the estimators were working on pre bid, i would have them increase the "pot-hole" budget on jobs i felt needed the extra time/expense locating utilities. Was never enough most of the time ..........

I just wrapped up a water line rehab. About 6k feet of 12" in a 1940's through current build neighborhood. The contractor had a daylighting company come out and daylight each utility (that were located). Each utility was surveyed with elevations painted next to the pothole. It was an extremely clean and well oiled process. Took the vac truck and operator about a week to pothole the project. The main hoe spent very little time spooning for utilities.

 

[Wrench]

If you know how to read GPR, it's amazing.

 

[49ereric]

Suck trucks get tons of hours these days finding utilities but even the new trucks are still dangerously loud. The old trucks even double hearing protection is not enough.

 

[packer58]

If you know how to read GPR, it's amazing.

Iv'e been retired for a few years so out of the loop, are locators using GPR these days ??

 

[Wrench]

We have our own for facility inspection....not many locators will have it, utilities may. It's THE only way to fly on private property underground.

 

[Customweld]

Iv'e been retired for a few years so out of the loop, are locators using GPR these days ??

I don't see many locators using them but the more savvy directional boring companies have them in their arsenal. @Wrench is right, once you learn how to read them, they open up a whole new level.

 

[Customweld]

Suck trucks get tons of hours these days finding utilities but even the new trucks are still dangerously loud. The old trucks even double hearing protection is not enough.

WHAT?!