What Is The Another Name Of Contouring By Spot Levels?

What is the other name of contour line?

Also called contour, level curve, level line..

What is meant by contouring in surveying?

In the property world, a contour is an outline of a mass of land. A contour or detailed survey is done by a surveyor and required before you can start on the design of your buildings. … Equally spaced contour lines indicate uniform slope. Closed contour lines with higher elevation towards the centre indicate hills.

What is the difference between a level surface and a horizontal surface?

Level surface : A surface which at every point is perpendicular to a plumb line or the direction in which gravity acts; parallel to the surface of still water. Horizontal surface: A flat surface at right angles to a plumb line.

What are the different method of contouring?

There are two methods of locating contours:Direct method.Indirect method.Direct method- In direct method contour to be plotted is actually traced on the ground. … Procedure- The work is started from BM and the level is set up at the centre of the area.More items…

What is purpose of contouring?

Contouring is a makeup technique that uses cosmetics to define, enhance and sculpt the structure of the face or other body parts, such as breasts.

What are the uses of contouring?

Use of Contouring in surveyIt depicture slope and size of different landforms on map.It provides complete and clear image of the land and the surrounding area.By reading contour interval it is easy to sort out the different elevation of the landscape.It provide the basis for coloring method.

What is direct contouring?

Methods of Contouring Direct Method • In the direct method of contouring, the reduced level of various selected points on a contour line are obtained and their positions are located. The contours are then drawn by joining these points. It is a very accurate method but it is slow and tedious.

Which line is tangential to level line?

horizontal planeAny plane tangential to the level surface at any point is known as the ‘horizontal plane’. It is perpendicular to the plumb line which is indicates the direction of gravity. Any line laying on the horizontal plane is said to be a horizontal line.

How many types of contour lines are there?

3 kindsThere are 3 kinds of contour lines you’ll see on a map: intermediate, index, and supplementary. 1. Index lines are the thickest contour lines and are usually labeled with a number at one point along the line. This tells you the elevation above sea level.

Is a line lying in a level surface?

Explanation: A level line is a line lying in a level surface. It is, therefore, normal to the plumb line, at all points. … Explanation: Horizontal plane through a point is a plane tangential to the level surface at that point. It is, therefore, perpendicular to the plumb line through the point.

What is the contour interval?

A contour line is a line drawn on a topographic map to indicate ground elevation or depression. A contour interval is the vertical distance or difference in elevation between contour lines. Index contours are bold or thicker lines that appear at every fifth contour line.

What is level surface?

For a function of three variables, a level set is a surface in three-dimensional space that we will call a level surface. For a constant value c in the range of f(x,y,z), the level surface of f is the implicit surface given by the graph of c=f(x,y,z).

Which method is suitable for the contouring of hilly areas?

Tacheometric methodSolution: Tacheometric method: This is practically suitable for hilly areas and at places where plane tabling is impractical. This discussion on Which of the following methods of contouring is most suitable for a hilly terrain?

What are the 5 Rules of contour lines?

Rule 1 – every point of a contour line has the same elevation. Rule 2 – contour lines separate uphill from downhill. Rule 3 – contour lines do not touch or cross each other except at a cliff. Rule 4 – every 5th contour line is darker in color.