You may be aware of the saying that no measurement is 100 percent accurate. That maxim may be leading you to wonder about what measures land surveyors take in order to limit the possibility of errors in their work. This article discusses some of the steps that land surveyors take in order to ensure that the work they produce is as accurate as possible.
Careful Design of the Reference Network
Surveyors do not just pick their instruments and go to work in the field when you ask them to do a survey for you, such as producing a boundary survey for your property. Instead, they form a team that will work on that project. That team first comes up with a plan of how best to perform the task. The planning process involves coming up with a reference network based on existing survey maps or existing survey marks in the area. This reference network helps them to avoid making errors since the network acts as a mechanism to check the accuracy of aspects like boundary lines. For instance, the boundary line of your property should not go beyond the boundary line of any adjacent surveyed properties unless it is found beyond reasonable doubt that errors were made when surveying the neighbouring properties.
Checking Land Survey Equipment Regularly
Equipment such as laser scanners and digital levels can lose their calibration thereby giving inaccurate results when used to survey a piece of land. Land surveyors avoid this source of errors by checking the calibration of their equipment regularly. This helps to ensure that they will get accurate results once they use that equipment as they perform a survey.
Use of Independent Checks
Another technique used to identify and remove errors from survey results is by performing independent checks. For instance, the surveyor can decide to measure a given point from several angles. The additional angles help to confirm the accuracy of the previous measurement. The additional angles can also help to point out an error that was made when making an earlier measurement. The use of independent checks can draw attention to many errors, such as errors that resulted from misaligning an instrument.
As you can see, every effort is made to remove the likelihood of errors in survey results. You should therefore have full confidence in the accuracy of the survey results presented to you, unless there is irrefutable evidence to the contrary.
Contact a profession, such as Transit Technical Services, for more information.