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Posts published in “Surveying”

Surveying is the art of making measurements of objects on, above or beneath the ground to show their relative positions on paper. The relative position required is either horizontal, or vertical, or both. Less precisely the term Surveying is used to the measurement of objects in their horizontal positions. Measurements to deteremine their relative vertical positions is known as levelling.

Geographical Information System (GIS)

Maps are used as the languages of simple geography. Importance of map making is recognised long ago. Surveyors went round the land and prepared maps. Data…

Remote sensing

Remote sensing may be defined as art and science of collecting informations about objects, area or phenomenon without having physical contact with it. Eye sight…

Computation of Volumes

The following three methods are available for computation of volumes: (i) From cross-sections (ii) From spot levels and (iii) From contours. First method is useful…

Methods of Contouring

Contouring needs the determination of elevation of various points on the ground and at the same the horizontal positions of those points should be fixed.…

Contours

A contour line is a imaginary line which connects points of equal elevation. Such lines are drawn on the plan of an area after establishing reduced…

Mapping

After completing field work in chain survey and compass survey lot of office work is involved to prepare the plan of the area surveyed. In plane…

Global Positioning System

The station points used in surveying are to be identified before executing any project: For this purpose, surveyors used permanent objects as reference points and…

Total Station

It is combination of EDM instrument and electronic theodolite. It is also integrated with microprocessor, electronic data collector and storage system. The instrument can be…