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Questions tagged [surveying]

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Comparing the precision work of plane surveying and geodetic surveying

In geodetic surveying, we consider the spherical geometry of the surface though the surface is not perfectly spherical. In-plane surveying, we consider a small surface area which is considered as a ...
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Why is North considered the reference direction in Surveying?

While Surveying, the North is always considered the reference direction, for the purposes of mapping. I have specifically the following issues: The magnetic compass, has a least count of 30 minutes, ...
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What is the most accurate geometry to represent earth

Currently software and maps represent earth in many different ways, the latest is Point Clouds as this is the most common surveying tools currently available. For the needs of visualisation, ...
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Establishing DGPS Communications With SurvCE and Novatel Recievers

I am trying to do a differential surveying project with some outdated equipment, specifically: An old AllegroCX personal handheld computer (Win 4.1) with SurvCE loaded on it to collect data and ...
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What instrument does a surveyor use to accurately find North?

The obvious answer is a compass. I have an old (1952) transit that has a compass which seems to be accurate to 15'. However, that doesn't seem too incredibly accurate at all. Furthermore, most modern ...
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What is a Spiral Curve, and How is it Different from a Normal Curve?

I've heard the term spiral curve used to describe a section of highway that is more aesthetically pleasing to the driver's eye. However, I believe I've driven on enough road to say that I can't ...
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How many decimal places of GPS should be stored to be accurate within a few feet?

I'm building a software application that uses GPS for a purpose related to roads. I'd like to know how many decimal places of GPS data should be stored to provide measurements that are accurate to ...
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Measuring longer distances with high accuracy

I am involved right now in the fabrication of steel structures on the order of 5-50 feet long. Presently, we measure these structures with garden variety commercial tape measures. Most of the time, we ...
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How was surveying for maps done before lasers?

I understand that you can have a device with angular measurements for rotation and elevation, and use trigonometry to calculate the distances... but only if you have some distances to start with. How ...