Sources of Errors in Surveying
In this article, we will discuss three major types of errors that are found to be very common in Surveying.
Types of Errors
- Instrumental errors
- Personal errors
- Natural errors
Error may arise due to imperfection or faulty adjustment of the instrument with which measurement is being taken.
A tape may be too long or an angle measuring instrument maybe out of adjustment. Such errors are known as Instrumental erros.
Error may also arise due to want of perfection of human sight in observing and of touch in manipulating instruments.
An error maybe taking the level readings or reading an angle on a circle of theodolite. Such errors are known as Personal errors.
Errors may also be due to variations in natural phenomena such as temperature, humidity, wind, refraction and magnetic declination. If it is not properly observed while taking measurements, the results will be incorrect.