What are the four types of surveying?

Surveying is the process of measuring and mapping the land, and it is an essential part of civil engineering and construction. There are four main types of surveying: plane surveying, geodetic surveying, hydrographic surveying, and photogrammetric surveying.

Plane surveying is the most basic type of surveying and is used to measure distances and angles on the ground. It is used to create maps and plans of land, and it is often used to measure the boundaries of a property. Plane surveying is also used to measure the elevation of land, and it is used to create contour maps.
Geodetic surveying is a more advanced type of surveying that is used to measure the shape and size of the earth. It is used to measure the curvature of the earth, and it is used to create maps of large areas. Geodetic surveying is also used to measure the distance between two points on the earth’s surface.
Hydrographic surveying is used to measure the depths of bodies of water, such as lakes, rivers, and oceans. It is used to create maps of the seafloor, and it is used to measure the depths of bodies of water for navigation purposes.
Photogrammetric surveying is a type of surveying that uses aerial photographs to measure distances and angles. It is used to create maps of large areas, and it is used to measure the elevation of land. Photogrammetric surveying is also used to measure the distance between two points on the earth’s surface.

These are the four main types of surveying. Each type of surveying has its own unique set of tools and techniques, and each type of surveying is used for different purposes. Surveying is an essential part of civil engineering and construction, and it is used to measure and map the land.

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