What is the difference between plane Survey and geodetic Survey by length?

The line joining any two points is treated as the arc of the circle. Length up to 12KM is treated as plane surveying. Length more than 12KM is treated as geodetic surveying. A triangle formed by joining three points is considered as plane triangle and angles formed are considered as trigonometry is required.

What is geodetic Survey?

A geodetic survey determines the precise position of permanent points on the earth’s surface, taking into account the shape, size and curvature of the earth. Geodetic measurements are now being done with the use of orbiting satellites that are positioned 12,500 miles above the surface of the earth.

What is a plane survey?

Definition of plane surveying : ordinary field and topographical surveying in which the curvature of the earth is disregarded — compare geodetic surveying.

How does a geodetic survey differ from plane surveying under what circumstances is it necessary to conduct a geodetic survey?

Geodetic surveying is mainly conducted to determine the precise positions on the earth surface. It is also called as Trigonometrical surveying. In-plane surveying, the curvature of the earth is ignored because surveying is conducted in small areas. The degree of accuracy is low as compared to Geodetic surveying.

Is geodetic surveying accurate?

Geodesy is one such branch on the tree of surveying. These super accurate land-mapping methods utilise the curvature of the earth as well as it’s own shape and position in space.

What is the objective of geodetic surveying?

The main objective of geodetic surveying is to determine the precise position of distant points on the surface of the earth. To get reconnaissance information and preliminary data required by engineers for selecting suitable routes and sites.

What are the types of geodetic survey?

Four traditional surveying techniques (1) astronomic positioning, (2) triangulation, (3) trilateration, and (4) traverse are in general use for determining the exact positions of points on the earth’s surface.

What do you mean by geodetic?

Geodesy is the science of accurately measuring and understanding the Earth’s geometric shape, orientation in space, and gravity field. Geodesists must accurately define the coordinates of points on the surface of the Earth in a consistent manner.

What are the types of plane surveying?

Plane Surveying includes chain surveying, plane table surveying, compass surveying, theodolite surveying and levelling.

Under what circumstances is necessary to conduct a geodetic survey?

Geodetic surveys are required for large scale projects where the effects of the earth curvature are critical or when a high degree of accuracy in necessary to complete the particular project. Surveying with the global positioning system (GPS) requires the surveyor to think in a geodetic surveying mode.

Where do we use geodetic survey?

Geodetic surveys study Earth’s geodynamical phenomena (e.g., crustal motion, gravitational field) using a satellite-borne global positioning system (GPS) in conjunction with terrestrial base stations. Geodetic surveys measure three-dimensional changes in crustal motion at the mm-scale.

What is the geodetic measurement?

Geodesy is the science of accurately measuring and understanding the Earth’s geometric shape, orientation in space, and gravity field. In the past, geodesists determined the coordinates of points by using Earth-based surveying tools to measure the distances between points.

What is the difference between over plane surveying and geodetic surveying?

Geodetic stations are in huge distance compared to stations formed in plane surveying. 6. More over plane surveying uses normal instruments like chain, measuring tape, theodolite, etc to locate points on earth, while geodetic surveying uses more precise instruments and modern technology like GPS.

What is plane surveying?

Plane Surveying. Plane surveying is a branch of surveying in which the surface of the earth is considered as plane surface. For small projects covering Area less than 250 sq.km. Earth curvature is not counted for in distances.

What are the different types of surveying?

However the prime classification of surveying is plane surveying and geodetic surveying. Plane surveying is a branch of surveying in which the surface of the earth is considered as plane surface. This is the most commonly practicing form of surveying.

Which length is treated as Geodetic Survey?

Length more than 12KM is treated as geodetic surveying. Involves smaller areas less than about 260 km 2. Involves larger areas more than about 260 km 2. Knowledge of plane trigonometry is required.