mercredi 23 décembre 2015

Surveying: What You Need To Know

By Carey Bourdier


It may be rare for most people seeking out job opportunities to take an interest on becoming a surveyor although it can be a fascinating profession. Perhaps it is safe to say that people commonly look at surveying as merely intended for measuring and plotting out maps for land but if you become fully oriented with it you'll find that there is a wide array of surveys. Try to sit down and read as much as you can about the different types of surveys and in the end you might find yourself motivated to pursue a career in one area.

For our first type of survey we have the one used for measuring the underwater depth of the Earth like our lake or ocean floors and it is known as Bathymetric survey. For this kind, surveyors primarily measure ocean depth through what you call depth sounding. But an interesting fact is that the older ways to measure underwater depth would have to be through the use of heavy and pre-measured ropes or cables lowered by the side of a ship. Taking an interest into this type of survey should require you to understand bathymetric maps and charts being that accurate and measurable description for a visual presentation in terms of the submerged terrains all over the world. Come to think of it, this is the submerged counterpart of the above water topographic map you know of.

When it comes to deformation surveys, it is concerned with ascertaining possible movement in an object like a building, for example. This is the measuring and tracking of alteration, if any, on the shape or dimension of the object as result from possible stresses of applied loads. If deformation surveys interest you then you should know the factors involved like the changes in bedrocks as well as the increase or decrease in weight, and perhaps alteration in material properties.

If you are interested in geological maps and models, there is a type of survey just for you. Geological surveys would show you a systematic investigation of geology beneath a particular piece of ground. A geological surveyor should understand walk-over surveys along with how to study outcrops and landforms. If you enjoy working outside, you could employ hands-on intrusive methods such as augering or perhaps using machine driven boreholes. At the same time, you need to conduct geophysical techniques along with remote sensing methods including aerial photography and satellite imagery.

Uncovering history is perhaps one good description when it comes to archeological surveys. This type of survey is sort of a field research used by archeologists to collect information about the past human cultures across a particular area. Back then, surveys were not as commonly used when it comes to archeology but it should be noted that through the years it was discovered that it indeed comes with several benefits. And so, archeological surveys came into play more commonly for the purpose of preliminary exercise or in the place of excavation.

Becoming a surveyor requires you to learn the proper use of many tools including inclinometers, theodolites and a variety of optical tools. What you need in order to measure precisely the angles, whether on horizontal or vertical planes, is a theodolite. As for angles and slopes along with the elevation or depression with respect to gravity, inclinometers would be your tool. Optical instruments like sights and alidades are important instruments too. Modern inventions such as a GPS or perhaps a total station often are used as well.




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