Radial Line Method Of Contouring

In this survey theodolite. It is assumed that slope between the.


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Radial line method of contouring. Methods of Contouring Radial Line Method or Tachometric Method In this method a number of radial lines are set out at known angular interval ie. 15 0 or 30 0 at each station. Then the vertical angle and.

Indirect Method of Contouring Method of Squares. This method is suitable for contouring the area of long strips with mountainous or undulation where direct chaining is difficult. Several radial lines are taken from a point in the area in this method.

In this method several radial lines are taken from a point in the area. 15 0 or 30 0 at each station. Squares or grid method is suitable for contouring of plains or gently sloping grounds.

Tacheometric method of indirect contouring involves the setting out of the radial lines by making different angles with respect to a reference line. The direction of each line is noted down. Tacheometric method is also know as radial line method.

10 Which area is suitable for square method of indirect contouring. The point are selected on a line depend on the nature of the ground surface. The point are selected on a line depend on the nature of the ground surface.

On these lines at selected distances points. Instead of the level a tachometer may be used. Radial Line Method.

The of each line is noted. We connect same elevation point to gain contour line. In this method area is divided into a number of squares and all grid points are marked Ref.

This method is ideally suited for hilly areas. Radial lines are laid out from the common centre by theodolite or compass and their positions are fixed up by horizontal angles and bearings. When the contours are drawn underwater they are termed as Submarine Contours Fathoms or Bathymetric Curves.

Methods of Contouring Radial Line Method or Tachometric Method In this method a number of radial lines are set out at known angular interval ie. Your source for the latest radial line method of contouring articles. Finally we draw a radial line outward from center.

Which method of contouring spot levels are taken along a series of lines laid over the area. The grid size would depend on the extent of survey. Ideally this method is suited for hilly areas.

Methods of Contouring Radial Line Method or Tachometric Method In this method a number of radial lines are set out at known angular interval ie. I Mark square grids on the land to be surveyed. Temporary bench marks are first established at the centre and near the ends of the radial linesThe contour points are then located and marked on these lines and their positions are determined by measuring their distances along the radial lines.

The point are selected on a line depend on the nature of the ground surface. On each of the radial line the tacheometric readings are then taken on the levelling staff kept at different points. On these lines at selected distances points are marked and levels determined.

Points are marked and levels determined on these lines at selected distances. This method is ideally suited for road and railway projects. This video lecture is suitable for Students of Civil Engineering as well as for the aspirants who wish to brush up on their basics.

Temporary bench marks are first established at the centre and near the ends of the radial lines. This method is suitable for small areas where a single point in the centre can command the whole area. The point are selected on a line depend on the nature of the ground surface.

In this method several radial lines are taken from a point in the area. In this method a number of radial lines at known angular intervals are drawn on the ground and positions of the points at equal distances are marked. Methods of Contouring Radial Line Method or Tachometric Method In this method a number of radial lines are set out at known angular interval ie.

The of each line is noted. It is assumed that slope between the ground points is uniform. By levelling the reduced.

In this method several radial lines are taken from a point in the area. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy Safety How YouTube works Test new features Press Copyright Contact us Creators. 15 0 or 30 0 at each station.

A Contour line may be defined as an imaginary line passing through the points of equal devotion. The crosssectional line need not be always be at right angles to the main line. A contour line may also be defined as the intersection of a level surface with the surface of the earth.

Theodolite with tacheometry facility is used common in this survey. On these lines at selected distances points are marked and levels determined. Direct Method By Radial Lines Lines contd.

Generally a 1m x 1m grid is selected for small works and a larger grid size for large works. 15 0 or 30 0 at each station. We note reference level on each point on these radial line by the help of tacheometric and leveling staff.

In this method cross-sectional points are taken at regular interval. The direction of each line is noted.


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