Quick Answer: What Is The Basic Principle Of Chain Surveying?

What is a chain surveying?

Chain surveying is that type of surveying in which only linear measurements made in the field.

Surveying is suitable for surveys of the small extent on open ground to secure data for an exact description of the boundaries of a piece of land or to take simple details..

What are the types of chain surveying?

Explanation: There can be 5 types of chains used for chain surveying. They are the metric chain, Gunter’s chain, engineer’s chain, revenue chain and steel band or band chain.

What are the two principle of surveying?

There are two basic principles upon which various methods of plane surveying are based. 1) LOCATION OF A POINT BY MEASUREMENT FROM TWO POINTS OF REFERENCE: The relative positions of the points to be surveyed should be located by taking measurement from at least two points of reference.

What are the principles of Levelling?

The principle of levelling is to obtain horizontal line of sight with respect to which vertical distances of the points above or below this line of sight are found.  Find the elevation of given point with respect to some assumed reference line called datum.

What is meant by surveying?

Surveying or land surveying is the technique, profession, art and science of determining the terrestrial or three-dimensional positions of points and the distances and angles between them. … Surveying has been an element in the development of the human environment since the beginning of recorded history.

What are the importance of surveying?

Surveying is important and most of us depend on it so as to ensure order in the physical world around us. Surveyors play an integral role in land development, from the planning and design of land subdivisions through to the final construction of roads, utilities and landscaping.

What are the errors in chain survey?

The basic reasons for errors caused in the chaining process in surveying are due to:The Chain or tape with erroneous length.Inefficient Ranging.Inefficient Straightening.Careless holding and marking.Sag in Chain.Personal Mistakes.Variations in Pull.Variations in Temperature.More items…

What are the basic principles in surveying?


Which of the following is not required for chain surveying?

Which of the following is not required for chain surveying? Explanation: Dumpy level is used in levelling not in chain surveying. 20 m chain, arrows, pegs etc are mandatory for chain surveying.

How long is a chain in surveying?

Surveyor’s chain, also called Gunter’s chain, measuring device and arbitrary measurement unit still widely used for surveying in English-speaking countries. Invented by the English mathematician Edmund Gunter in the early 17th century, Gunter’s chain is exactly 22 yards (about 20 m) long and divided into 100 links.

What is the principle of survey?

Surveying is the process of finding the relative position of various points on the surface of the earth by measuring distance among them and setting up a map to any reasonable scale. Various methods of surveying are established on very simple fundamental principles.

What are the parts of a chain?

1.1. 4 Functions of Chain PartsPlate. The plate is the component that bears the tension placed on the chain. … Pin. The pin is subject to shearing and bending forces transmitted by the plate. … Bushing. … Roller. … Cotter Pin, Spring Clip, T-Pin.

What is the purpose of 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 a chain 66 feet?

The chain was originally called an “acre’s breadth”, because it was the width of a acre, while a furlong was the length. Edmund Gunter, a clergyman and mathematician, invented a measuring device called a chain. It was the forerunner of the slide rule. The chain was 66 ft (20 m) long.

How do you plot a chain survey?

3.19) is used for plotting them. In this method, the long scale is placed along the chain line with its zero exactly at start of the line. The offset scale is then placed at right angles to the long scale and is then moved along it to the required changes and the offset lengths are marked with a pricked.

What are the instrument used in chain surveying?

Invar tape Among the above, metallic tapes are widely used in surveying. A metallic tape is made of varnished strip of waterproof line interwoven with small brass, copper or bronze wires. These are light in weight and flexible and are made 2m, 5m 10m, 20m, 30m, and 50m.

What is chain and tape survey?

Chain survey is the simplest method of surveying. … The necessary requirements for field work are chain, tape, ranging rod, arrows and sometime cross staff. It is a system of surveying in which sides of various triangles are measured directly in the field and NO angular measurements are taken.