Classifications of Survey

There are two main classifications of topography

3.1- Basic classification
3.2- Secondary Classification

3.1 Primary Classification

1- Plane Survey

Flat survey is a type of survey where the mean surface of the Earth is considered flat and the spherical shape is deprecated. All formed triangles are flat triangles. The level line is straight, and all the drawn lines are parallel.

2-Geodetic Survey

Geodetic terrain is the type of terrain in which the shape of the Earth is considered. All lines on the surface have curves and triangles, spherical triangles. Therefore, it involves spherical trigonometry. All engineering surveys contain wide work and high accuracy. The purpose of geological studies is to determine the exact location of the Earth's surface.

3.2 Secondary classification
There are four major topographic classifications

1. Based on the nature of the countryside
2. Object based
3. Existing instrument
4. Existing method

Classification based on the nature of the field

         There are three types of surveys based on the nature of the field:

1. Land Surveying

This section includes topographic survey (b), c-city survey, and c-city survey, this section mainly deals with natural and artificial physical objects in terrestrial surveys, such as hills, lakes, rivers and mountains,
Railways, water supply and sanitation systems, buildings, property, channels, cities, roads, etc.

2. Marine Surveying

Marine or hydrographic survey deals with waterways for navigation, water supply, port works, or determining mean sea level. The work consists of watercourse flow measurement, topographic mapping of margins and margins, acquisitions and placement of wells to determine water depth and monitor tidal fluctuations.

3. Astronomical survey:

Meter astronomical studies provide a method for determining the absolute location of each point or absolute location and the direction of each line on the Earth's surface. It is consisting of observing celestial bodies such as the sun or fixed stars.

B building classification

This section focuses on the object that Bering has used in the terrain.

1. Geological survey
2. Clear mines
3. Archaeological survey
4. Military terrain

C Classification based on instruments

This section covers the terrain category, based on the tools used during the scanning process.

1. Terrain series
2. Lift the compass
3. Flat table topography
4. Lift theodolite
5. Topographic survey
6. Scanning

D- The classification-based method

This section addresses the survey category based on the methods used during the survey process.

1. Triangular terrain
2. Transverse terrain