Basic measurements in surveying include distance, elevation, and angles. Distance is typically measured using instruments like a tape measure or electronic distance meters. Elevation can be determined using a level or GPS equipment, while angles are usually measured with a theodolite or total station.
The main objects of surveying are to determine the relative positions of points on the Earth's surface and to measure distances, angles, and elevations accurately. The basic principles of surveying involve understanding and applying concepts like accuracy, precision, measurements of distances and angles, leveling, and use of surveying instruments to gather data for mapping and construction projects. It is essential to follow standardized procedures and techniques to ensure reliable and consistent results in surveying work.
Everything that has to do with civil engineering is based upon the measurements of land surveying. Surveying gives the measurements that are vital to build things such as buildings, bridges, tunnels and other important things.
General classifications of surveying include geodetic surveying, plane surveying, topographic surveying, cadastral surveying, construction surveying, and hydrographic surveying. Geodetic surveying deals with large-scale measurements of the earth's surface, while plane surveying focuses on small-scale measurements on a flat surface. Topographic surveying involves mapping of the land's natural features, cadastral surveying deals with land parcel boundaries, construction surveying is used for building projects, and hydrographic surveying is for mapping bodies of water and their features.
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The main classes of surveying are geodetic surveying, topographic surveying, cadastral surveying, construction surveying, and hydrographic surveying. Geodetic surveying deals with large areas and high accuracy measurements for mapping the Earth's surface. Topographic surveying focuses on determining the natural and man-made features of a specific area. Cadastral surveying involves demarcating property boundaries. Construction surveying is done to guide the construction of infrastructure and buildings, while hydrographic surveying is used to map underwater features.
Leveling in surveying is important to get an accurate measurement. The rise and fall of the grade will cause the measurements to be off, resulting in an inaccurate measurement of plots of land.
"Elementary Surveying" by Jun la Putt is a comprehensive introductory guide to surveying principles and techniques. It covers topics such as measurements, field survey methods, and the use of surveying equipment. The book is suitable for students, professionals, and anyone looking to learn the basics of surveying.
leveling and traversing
In land surveying, a rod is typically 16.5 feet long. It is a common unit of length used for making linear measurements in the field.
HOT stands for Horizontal Offset Target, a reference point used in surveying to calculate horizontal measurements and distances from a particular point or feature.
In surveying, "IPOs" stands for "Initial Point of Survey." This refers to the starting point or reference point from which the survey measurements are taken. It marks the beginning of a survey project.
Advantages of Traverse Surveying: Traverse surveying creates a closed loop, which confirms the accuracy of the survey. It is suitable for surveying large areas with a minimum of time and effort. This method can be used for both plane and geodetic surveying. It is easy to calculate the coordinates and areas by using the traverse surveying method. Disadvantages of Traverse Surveying: The accuracy of the survey is dependent upon the accuracy of the instruments used for the measurements. This method requires a long base line which is not always available in certain circumstances. Traverse surveying is not suitable for rough terrain as measurements can be affected by uneven ground. It is difficult to locate the exact points when the measurements are taken from a long distance.