Contouring method suitable for hilly terrain

The most suitable method of contouring for a hilly terrain is the Tachometric method. This method is used for measuring horizontal and vertical angles, distances, and elevations. The details of this method are as follows:

Tachometric method:

- This method is also known as the stadia method or the stadia interval method.
- It is a quick and accurate method of contouring that is suitable for hilly terrain.
- This method involves the use of a tachometer or a theodolite to measure the vertical and horizontal angles.
- The distance between the instrument and the point of measurement is measured using a stadia rod.
- The stadia rod is marked with two horizontal lines that are a known distance apart. The distance between these lines represents a known distance on the ground.
- The difference in elevation between the instrument and the point of measurement is calculated using trigonometry.
- This method is suitable for measuring elevations up to 200 meters.

Advantages of the Tachometric method:

- This method is quicker and more accurate than other methods of contouring.
- It is suitable for use in hilly terrain where other methods may be difficult to use.
- This method can be used to measure elevations up to 200 meters.
- The measurements obtained using this method are accurate and reliable.

Conclusion:

The Tachometric method is the most suitable method of contouring for hilly terrain. It is a quick and accurate method that can be used to measure elevations up to 200 meters. This method is ideal for use in hilly terrain where other methods may be difficult to use.

Tacheometric method