Bunch of cowboys
Nationwide. Probably world wide.
I'll allow that it is prudent to ensure that your crew has attained a certain level of general competence before attempting them, and that the supervising PLS establish clear procedures to be followed. ?ÿ?ÿ
@rover83?ÿ
A few monitor projects one year, using StarNet and the internal calcs from the DC, I ran both resections and traverse to establish control for each point we monitored. (Meaning we established new control each day, often on the same marks, but reestablished that day from control outside of the zone of disturbance.)?ÿ
Resections are better...100% better.
Other evidence? We used to run control on the curbs in subdivisions to set the mons, and balance the results in StarNet. The best practice was to place a couple of points in the middle of the subdivision that were observable from many other points. Simply shooting them in and creating that network created a night and day difference in the end product. You could run the traverses different ways and see the differences.?ÿ
I am completely convinced that resections from points outside the zone of disturbance are the correct way to establish working control points. Is it possible (even easy) to get it wrong and mess it up? Yes. Build in checks. Can you get lazy and use just two points that have bad geometry? Yep. But, assuming the same level of care, resections are safer, more accurate, and more precise, in my experience.?ÿ
