[Solved] Which of the following methods of con-touring is most suitab (2024)

FAQs

Which of the following methods of con touring is most suitable for a hilly terrain? ›

Cross section method: This method is suitable for route survey, when cross sections are taken transverse to the longitudinal section.

Cross section method is most suitable for preparing contour maps for road works, rail works, canals etc. Typically, this type of land has a very long strip but narrow width. iii) The perpendicular lines are divided into equally spaced divisions, thus forming rectangular grids.

iii) Radial line method. This method is suitable, if the area to be surveyed is not very large and undulation of the ground is not much. In this method the area is divided into a number of squares and all grid points are marked. Commonly used size of squares varies from 5 m * 5 m to 20 m * 20 m .

Air Transport is considered the most suitable mode of transportation and commutation in the hilly and mountainous regions.

Two primary approaches in contouring are the Direct method and the Indirect method. The direct method involves physically measuring elevation at specific points on the ground using different types of Surveying instruments, providing high accuracy but requiring significant time and effort.

Accuracy of Real-Time Kinematic (RTK)

RTK is the most accurate GNSS surveying method, capable of achieving centimeter-level precision in real-time. Its high accuracy makes it ideal for applications like precision agriculture, construction staking, and cadastral surveys.

How to choose a survey method. For surveys that include a target population you already have access to and can enumerate, online or telephone surveys will work well. If literacy or language obstacles are present, face-to-face interviews are your best option.

There are 3 kinds of contour lines you'll see on a map: intermediate, index, and supplementary. 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.

Contour lines never cross.

They may come very close to each other (e.g. along a cliff), but by definition they may never cross each other. * This is because one location on the surface of Earth cannot be at two different elevations!

What is the cross-section method? ›

Cross section means the representation of the intersection of an object by a plane along its axis. A cross-section is a shape that is yielded from a solid (eg. cone, cylinder, sphere) when cut by a plane.

Cross Contour is a method of drawing that creates the illusion of 3D form. These are the drawings that outline and highlight the figurative shape of an object or objects in a drawing. Usually, a contour drawings success is defined by the line quality.

Tachometric method of contouring-

This method is used for angular surveying. This method is best suited for hilly terrains as the number of stations that can be commanded by a tachometer is far more than those by a level and thus the number of instrument settings is considerably reduced.

Answer: The square method of indirect contouring is commonly used in small and low undulating areas. Explanation: The indirect approach involves taking spot levels along a predetermined line on the ground at regular intervals.

By Cross- Sections: This method is most suitable for the surveys of long narrow strips such as a road, railway or canal etc. Cross sections are run transverse to the centre line of the work and representative points are marked along the lines of cross-section.

Stadia Leveling is used in hilly areas. Explanation: Many types of levelling are used in surveying for the measurement of the level difference of different points with a fixed point.

Radial Line Method or Tachometric Method

The observations are taken on the staff stations and elevations and distances are then calculated. A traverse and radial lines are plotted to the scale RLs of the point entered. The contour of desired values are then located by interpolation .