LEVELING SURVEY

What is the leveling survey?

The process or technique by which the relative height or depth of various points or objects on the surface of the earth is determined is called leveling survey.

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Purposes of Leveling Survey

(A) Implementing various route projects like road, railway, irrigation canal, water or sewer line to determine their surface alignment and horizontal surface profile or friendliness.
(B) To determine the amount of soil to be filled or filled in different projects.
(C) Drainage area determination in Nimmo during the drainage project and to design the convenient sewer size .

(D) For topographic evaluation of the proposed reserved area for construction.
(E) Volume calculation of any reservoir, catchment area from the contour map.
(F) To install additional B, M, in the Nimmo.
(G) For inspection of the prepared surface of roads, railways, etc.
(H) To level the land of a certain area to a certain height.
(I) Slope determination of roads, railways, canals, roofs, floors, etc.

(J) To construct maximum flood plain during the construction of bridges, culverts, roads, railways, buildings.
(K) For Monitoring the leveling of the foundation floor during ecological installation.

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Building Leveling Service

What equipment's we use to handle the leveling work

In order to determine the elevation of different points, four things we mainly use in the leveling work which are-
(A) Leveling machine
(B) Staff
(C) Chain or tape and
(D) One level field book or transcript

With the help of a level machine, we obtain horizontal vision at any point on the earth’s surface. In the horizontal line of sight, the staff measure the vertical distance of a point, and chains or ribbons are used to measure the distance of different points. We record the distance of the staff lesson and all other details of the field in the field book.

Importance of LEVELING in Fieldwork

  • Leveling work helps the surveyor to make a counter map of the land surface or sea surface.
  • It helps the surveyor to lay a ground level on which they can build a building.
  • Leveling survey data helps pipe transport engineers to clarify the appropriate slope of land that will allow smooth movement of liquid.

Differential Leveling

Differential leveling is the process of measuring vertical distances from a known elevation point to determine elevations of unknown points.

The most common methods to determine elevations are

1) A compensator type, automatic (engineering level) and level rod(s),

2) An electronic digital barcode leveling instrument with a barcode rod.

Thorough knowledge of leveling principles and proper application of methods and equipment will prevent costly delays and generate the needed results and accuracy.

Preferred methods of obtaining elevations (in order of preference/accuracy) are

  • Differential Leveling – control benchmarks, cross-sections, point elevations
  • Trigonometric Leveling – for Digital Terrain Model (DTM), 3D Model
  • Indirect leveling (and location) by measuring horizontal distances and vertical angles
  • Three-dimensional coordinates – both horizontal position and elevation are computed by processing the measurements
  • GPS survey – given the appropriate equipment, procedure, and data collection.

Other forms of leveling are available but we are not discussing them in this manual as their use may be limited.

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Figure: Illustration of Differential Leveling.

The method in Figure 4-3 uses the difference in elevation between a known elevation and the height of the instrument. Therefore the difference in elevation from the height of the instrument to an unknown elevation point.
With a thorough understanding, we provide Leveling Service to our clients. Due to our personnel’s knowledge and expertise we are able to meet the needs of our clients. We have adroit employees, who offer these services in agreement with the defined guidelines.

Service Description

Sonar Bangla Survey Consultant is instrumental and well prepared in offering an excellent quality range of Leveling Surveys.
Object-
The aim of leveling is to determine the relative heights of different objects on or below the surface of the earth and to determine the undulation of the ground surface.

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leveling survey for Roof casting

Land Leveling Service

With our vast experience & knowledge in this field, we are offering the best quality array of Land Leveling Survey to our prestigious clients. We are highly regarded in the industry for adhering to the latest technological standards while carrying out our services. All aspects of the underlying situation we expect careful consideration before arriving at the Final Report.