What Is Topographic Survey?


Author: Albert
Published: 9 Dec 2021

The Land Surveyor's Information

The land survey looks like it will be determined by the data obtained at the property. The more data the land surveyor has, the more detailed the survey can be.

Land Surveying: A Methodology

A topographical survey is also known as a land survey or a topographical land survey. A topographical land survey can be used to determine the location and characteristics of natural and man-made elements. The plan is made from the survey and incorporates human-made characteristics like boundaries, fencing, and walkways.

The topographical survey picks up natural elements such as ground, trees, ponds, and walls. elevation differences are measured than calculated, which makes leveling very accurate. The automatic levelling is done at each location.

A backsight to a station is placed before the level on the track and after the station along the traverse. Tachymetry Survey uses Stadia Rods. A small Stadia Rod is used for shorter distances of 80m to 120m and a big Stadia Rod is used for longer distances.

A Stadia Rod can be up to 6m in height. Vernier scales are used to measure horizontal angles. A magnetic north-south line is used to describe the direction in relation to a reference line.

The line is parallel to the magnetic lines of the earth. The station points and permanent marker points will be fixed by the Surveyors using preciseGPS technology. The recorded points are used as reference markers to align the survey area with the local or national coordinate system.

Topographical Surveys

A wide range of different equipment will be used in a survey to make precise measurement of the features of a site. Fixed points of land can be produced by accurate gps equipment and used as reference markers to tie in with the national coordinate system. Collaboration with suitable individuals can help you to find the most suitable information to collect during the survey.

A survey will give you accurate land measurements and show you how the site is arranged. It will help guide decisions when it comes to the planning of new buildings, the re-positioning of existing boundaries, and the design of drainage schemes for a site. A topographical survey can bring greater certainty to any planned development by reducing the risk of costly errors which could be made without an accurate picture of a site.

A Study of the Traverse Line Project

1. A traverse line is a series of straight lines that connect traverse stations. A traverse follows a zigzag course, which means it changes direction at each traverse station.

17 You should keep a record of all the measurements you made. You can use a table like the one shown in the example or you can sketch out the open traverse on square-ruled paper, noting down your measurement next to the correct stations.

20. You can lay out a closed traverse ABCDEA in the same way as an open traverse, but you have to connect the last point to the initial point A. There are 9.

You can build a tripod with legs made of wood or with a different style of legs. A tripod with legs that are adjusted is more difficult to make than a plane-table that is set up on the ground. 19

Attach the legs with bolts, washers and wing nuts if you want to use them for a project. The plane-table is ready to use. You may need to set up the plane-table so that a point on it is exactly over a ground point.

Topographic Maps

Topography is the study of the shape and features of land. The surface shapes and features on the ground are referred to as the topography of the area. A map showing both natural and man-made features is required for traditional definitions.

A survey gathers data about the land's features and terrain. The ground and its boundaries are defined by permanent features such as buildings, fences, trees and streams. The elevation of the terrain is shown by the land levels.

Topographic maps are used by architects, engineers, building contractors and others to accurately see their sites. A survey is used as a basis for design decisions. An accurate digital plan of the site area is needed by an architect or consulting engineer.

The survey and data can be used for a variety of purposes. On-site robotic total station instruments are used to detail features. The instrument has an onboard feature code list.

Topographic Surveys for Map-of the Future

Maps of the future are created using topographic survey data. New road construction, housing construction projects, or land registry data submission can't be accomplished without topographic data. Preplanning is needed to determine the level of detail and accuracy needed for the survey.

Preplanning and extensive research can determine how much data is generated. The location surveys are used to find out where the recent improvements are. You would need a location survey to apply for a loan or permit for construction work on an existing project.

Land Surveys

Boundary surveys are used to resolve legal disputes over new home extensions or landscaping work. They can be used to map out the exact location of the property line. Boundary surveys are the main type of land surveys.

A land survey can be used to determine the exact location of an easement on a piece of property, even if you, your neighbour, or the local government do not have one. You might have an easement that allows the utility provider to work on a pole on your property. A survey would be conducted to evaluate the extent to which the corporation can operate.

A topographical land survey focuses more on elevation than horizontal measures. Most of the time, a survey unit or electronic instrument is used. The results of the survey are drawn on a map of the ground, rather than at landmarks.

Calculating the Field Measurements in a Table

There are 8. The example shows how you can make the calculations more easy if you record the field measurements in a table. You will not make any calculations that are more complex.

All BS's and all FS's must be added separately. The sum BS is subtracted from the sum FS to find the elevation difference. There are 9.

You will often need to use more than one turning point between two points of elevation. You can use the procedure you have just learned, but you will need to record the field measurements in a table to make it easier to calculate the results. 15.

Add two columns to the table that is in step 12. You can enter your height and distance in the main part of the table. Then, in the first additional column, record the distance from one point to the next.

The distance from the starting point A to the point where you are measuring is called the cumulated distance. Survey from point A of a known elevation. TP5 is the elevation of the point.

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