"they make hand held bubbles to temporarily place up against the level rod for on those days when your rodman has a case of the weeble-wobbles.
also don't forget to hit the refresh button on the level before every reading"
care to be taken to conduct these kind of surveyors.
1. ensure that the instrument does not have any errors. this can be ensured by conducting 3 peg test.
2. Always take the three wire readings.
3. The staff man should be trained on the…"
"Thats a great link. I've used both of the first two methods and agree with the accuracy in that order. I've never had to resort to the third but its how i was initially taught to understand the concept of elevation. I started…"
"The standards for geodetic leveling vary depending on the accuracy and precision required by the survey. The NGS website offers many resources for geodetic leveling requirements to meet the United States Standards. I have pasted the URL…"
"The choice of change points is critical. I tell my chainperson a change point must pass two tests. First if you kick it and it does not move, fine. Secondly if, when you place the staff on the change point and spin it around, it pivots on the same…"
"It depend on the precision that you need, or more exactly the work requiered. There are several level of precision, each one with a equipmnet and procedures specifics. If you name it "geodetic leveling", is better to go to a seriuos…"
The standards for geodetic leveling vary depending on the accuracy and precision required by the survey. The NGS website offers many resources for geodetic leveling requirements to meet the United States Standards. I have pasted the URL below. Different areas will have different standards, however, the adjustments and equipment required will be similar. There will be 7 different adjustments you must understand; Orthometric, Rod Scale, Rod Temperature, Level Collimation, Refraction, Astronomic and Magnetic. These adjustments will dictate the process you use to complete the field work. You should be able to find a power point presentation on the website below explaining most of the aspects of geodetic leveling. If you find you have a specific question later please post again!
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