How do you conduct a chain survey?

Chain Survey Procedures

1. Firstly, inspect the area to be surveyed and prepare key plan.
2. Then, mark stations using suitable means such as fixing ranging poles, driving pegs, and digging and fixing a stone.
3. After that, specify the way for passing the main line which should go through the center of the field.

What is chain Survey recommended?

Chain surveying is recommended when: The ground surface is more or less level. A small area is to be surveyed. A small-scale map is to be prepared and.

What are the operations involved in chain surveying?

Chain surveying is the type of surveying in which only linear measurements are made in the field. The main principle of chain surveying or chain triangulation is to provide a framework consist of number of well-conditioned triangles or nearly equilateral triangles. It is used to find the area of the field.

Why is chain survey important?

The importance and usefulness of chain surveying It is used to fill in details on a map whose large features have been surveyed by other methods. It is used in mapping small areas of flat or near-flat ground and associated objects, for example paths, roads and railways.

What is chain surveying plot?

Plotting means to represent on paper, to a suitable scale, the previously surveyed objects in accordance with their shape and size. Plotting is commenced after the field-work is over. The plotting of a chain survey is done in the following steps: (i) A suitable scale is chosen before starting the plotting work.

What is an obstacle in chain survey?

The three main obstacles in chaining of a line are of the following types: 1. Chaining Free, Vision Obstructed 2. Chaining Obstructed, Vision Free 3. Chaining and Vision Both Obstructed. It sometimes happens that a survey line passes through some object such as a pond, a building, a river, a hedge etc.

What is mean by chain survey explain the procedure of chain survey?

Chain survey/surveying is a very old method of Surveying. The chain survey is the simplest method of surveying. In the chain survey, only measurements are taken in the field, and the rest work, such as plotting calculation, etc. are done in the office.

What is chain survey error?

Erroneous Length of the Chain or the Tape This error is a cumulative error that can either take a negative or a positive value. If the length of the chain is long, then the measured distance is smaller and the error is negative. And when the length of the chain is short, then the measured distance is long.

What is an example for obstacles to chaining?

A building is an obstacle to both chaining and ranging. A river is an obstacle to chaining but not ranging. A hill is an obstacle to ranging but not chaining.

What is the aim of chain survey?

The principle of chain surveying is to divide the area to be surveyed into a network of connected triangles as a triangle is the only simple figure that can be plotted from the lengths of its sides measured in the field. The field measurements must be so arranged that the area can be plotted by laying down triangles.