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Two basic types of levelling in surveying?
basically two types of levelling.. 1.Direct Levelling 2.Indirect Levelling. further they can be classified as well.
What are the classification of surveying?
Surveying can be classified into two main categories: plane surveying and geodetic surveying. Plane surveying deals with small areas on the Earth's surface where the curvature of the Earth can be neglected. Geodetic surveying involves measuring large areas and taking into account the curvature of the Earth.
Method of surveying for two point problum in plane table surveying?
Radiation intersection traversing resection
What is plane surveying?
There are two general types of land surveying: plane and geodetic. Plane surveying considers the earth to be a flat surface--a plane, which works well for jobs spanning a short distance (a few miles), because calculations are relatively simple. Surveys of this nature account for much of survey work being done. Geodetic surveying takes into account the true shape of the earth. These surveys are usually of a very large scale and most often performed by government agencies. GPS is capable of automatically giving geodetic positions (within certain qualifiers), though a thorough understanding of the principals of geodesy is necessary to adequately design and conduct a geodetic survey.
What is chain surveying?
Chain surveying is a traditional method of land surveying used to measure and map large areas of land. It is one of the simplest and oldest surveying techniques, dating back to ancient times. In chain surveying, the primary measuring instrument used is a chain, hence the name. The main steps involved in chain surveying are as follows: **Selection of Stations:** The surveyor selects prominent points on the ground, known as survey stations, which form the main control points for the survey. **Triangulation or Baseline:** The surveyor establishes a baseline, which is a straight line connecting two nearby survey stations. Triangulation may also be used to extend the survey to areas beyond the baseline. **Chain Measurement:** The chain, a measuring tape, or a tape measure is used to measure distances between survey stations and other features on the ground. The chain used in chain surveying is typically 66 feet (20 meters) long and divided into 100 links, each 0.66 feet (20 centimeters) long. **Offsets:** To survey features that are not directly on the survey line (such as buildings, walls, or trees), the surveyor takes offsets perpendicular to the survey line to the features. **Angulation:** The angles between the survey lines are measured using a compass or theodolite to determine the direction of the lines relative to a reference direction (usually the north direction). **Plotting:** The surveyor plots the measurements and angles on a field book and later transfers the data to a map or plan, creating a scaled representation of the surveyed area. Chain surveying is suitable for relatively flat terrains and small to medium-sized survey areas. However, it has limitations, especially when dealing with hilly or irregular terrains. Errors can occur due to sagging or stretching of the chain, uneven ground, and inaccuracies in measuring angles and distances. Modern surveying techniques, such as total stations and GPS (Global Positioning System), have largely replaced chain surveying for large-scale surveys due to their higher accuracy, efficiency, and suitability for various terrains. However, chain surveying remains relevant for small-scale, low-accuracy surveys and educational purposes to understand the principles of land surveying.
What is a survayor?
Being a surveyor can refer to a number of different professions that require examination and positioning of things. Two examples of surveyors are construction surveying and ship surveying.
What kind of tools do cartographers use?
Surveying and drawing tools are two main requirements.
Are preliminary (or data gathering) surveys plane surveys?
No, preliminary or data gathering surveys are not plane surveys. Preliminary surveys are conducted to gather information and data about a site or project area before designing and carrying out the actual plane survey. Plane surveys involve measuring and mapping the land or other surface features in a two-dimensional plane.
In levelling surveys what is the meaning of flying level?
Flying level refers to a technique where the level instrument is moved horizontally between two points without being sighted on any intermediate points. This method is typically used to quickly establish a rough horizontal line over a long distance.
What is the Silk Route and what two areas did it connect?
the silk route is a route to china.
In what context is the term base station used?
Base station can mean one of two things. One, base station could be referring to wireless communications and two, it could be talking about land surveying. For land surveying a base station is a GPS receiver in a known location so the people surveying can get back. When talking about wireless communications it is meaning a station fixed at one point for either a two way radio or either a wireless cellphone site.
What is the difference between geodetic surveying and plane surveying?
Plain surveying means the survey in which earth surface is considered as to be flat or plain i.e. its curvature is ignored. Geodetic survey is the survey in which curvature of the earth is taken into count and then surveying is done.
