Texas Registered Professional Land Surveyor (RPLS) Practice Test

A control point is fundamentally a fixed reference point that serves as a crucial basis for establishing other survey points. In surveying, control points are established either through precise measurement methods or with the help of previously determined coordinates. They allow surveyors to achieve consistency and accuracy in the representation of physical locations on maps or plans. The use of control points is essential in ensuring that all surveying and mapping is aligned correctly, maintaining a framework within which all measurements can be taken and compared reliably.

This concept is vital in all types of surveying – whether for construction, land subdivision, or geographic information systems (GIS) – as it assures that the position and elevations of various features within the surveyed area are correctly referenced. Control points can be new points established during the surveying process or older, established references that are known with high precision.