Activity Feed › Discussion Forums › Strictly Surveying › RTK Offset Shots
I’ve done a handful of offsets with gps. For topo locating trees or items with more error tolerance than a property corner a bearing distance offset is probably sufficient, especially if your talking small distance offsets. you start talking 50′ plus offsets the bearing, distance may not be your pick of offsetting.
Property corners on the other hand I have found a two point distance, distance offset has given the best result when i’m trying to obtain max results.
2 good points and double tape all 3 sides of the triangle.
I really like what the professional surveyor said about field books.
No substitute for a good field sketch, especially of screwy stuff. If only to jog the old noodle of what the situation was.
O L D, happens, licensed since February 1991, i think.
If the office doesn’t trust your methodology for surveying, then that means they don’t trust you. I’d be having a serious heart to heart with the powers that be.
- Posted by: Hi-staker
If the office doesn’t trust your methodology for surveying, then that means they don’t trust you. I’d be having a serious heart to heart with the powers that be.
This is an example of where “the office” should provide guidance to the field crews. We want this done such and such a way. You bring this back, in this form, and the office knows how to deal with it and the results will be satisfactory. Just having everybody go out and do things their own way is inefficient and yields variable results. It’s not about trust – there is always more than one way to skin these cats.
Of course, it’s fine if its a 2 way street – crews may have good suggestions. But being a company means working together. Everybody just doing things their own way is a rabble. Getting out of the field quickly isn’t very satisfying if the returns bog down the office. The idea is to get a map or some other end product delivered and not just to put on a field work performance.
A field crewman once said “I stand behind my work”. To which I replied “No, I stand behind your work.”
- Posted by: Norman OklahomaPosted by: Hi-staker
If the office doesn’t trust your methodology for surveying, then that means they don’t trust you. I’d be having a serious heart to heart with the powers that be.
This is an example of where “the office” should provide guidance to the field crews. We want this done such and such a way. You bring this back, in this form, and the office knows how to deal with it and the results will be satisfactory. Just having everybody go out and do things their own way is inefficient and yields variable results. It’s not about trust – there is always more than one way to skin these cats.
Of course, it’s fine if its a 2 way street – crews may have good suggestions. But being a company means working together. Everybody just doing things their own way is a rabble. Getting out of the field quickly isn’t very satisfying if the returns bog down the office. The idea is to get a map or some other end product delivered and not just to put on a field work performance.
A field crewman once said “I stand behind my work”. To which I replied “No, I stand behind your work.”
I agree that the “office” needs to provide guidance, IE: “I prefer that you not use offset shots, but if there is no other way to get the shot then this is the procedure that must be followed…..” instead of “NO OFFSET SHOTS!”
I will never understand Licensed Surveyors or Engineers that badmouth their technicians. If you don’t trust the people doing the work under YOUR license, then it is way past time to either train them to your level of trust or fire them.
With the trimble r-10 shoot it with the rod out of plumb. I actually prefer a distance-distance, and the measure to a 3rd point as a check. The two points on a line have a larger potential for error if you are having to tape in a significant distance, sloppy field crews. I think this distance distance method is more dummy proof.
For RTK offsets I got a gun sight laser and mounted it on a camera tripod. With this setup I can point the laser at the feature I want to locate and then use the 2-point and distance method on my data collector to solve it. I position the rod until the laser dot is centered on it and take the first shot, then move down the laser line and take the second shot. I use a small laser distance measure to record the distance from my last shot to the feature. The camera tripod is compact and light weight. I mostly use it for building corners since it is easy to shoot a horizontal distance.
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