Instruments used in chain surveying pdf

It can be defined as the process of taking direct measurement, although not. There are different types of chains that are used in chain surveying all of these are also enlisted. Chain surveying, it is a method of surveying in which no angles are measured but only linear measurement is taken in the field by using a chain or tape measure. Principle of chain surveying, advantages and disadvantages of. Chains are the measuring instrument used in surveying formed by. With modern surveying instruments, survey work will be precise, faster and less tedious. Instruments used in chain survey chain, 20m or 30m long tape arrows ranging rods wooden or iron pegs plumb bob cross staff chain used for surveying 20m chain 100 links 30m chain 150 links 1 links 20cm links of chain are made by mild steel wire 4mm diameter. In this post i have enlisted and explained all the tools and instruments used in chain surveying. What are the instruments used for a chain surveying.

As you are about to execute chain surveying so chain is the requisite tool that is a must. Following are the modern surveying instruments which are used for surveying. Types of chains used in surveying, their parts, testing and. Chapter 3 surveying equipment, measurements and errors. Click on the button below to get the pdf file and read offline. The various instruments used in chain surveying are as follows. Instrument used for chain surveying polytechnic hub. Pdf key points on chain surveying araen shinge academia. The following instruments are required for measurements with chain and tape. Instruments used in chain surveying iamcivilengineer. Ranging rods are used to range some intermediate points in the survey line the length of the ranging rod is either 2m or 3m.

Some of the modern surveying instruments are discussed in this article. Types of chains used in surveying, their parts, testing and advantages. The various instrument used for the determination of the length of the line by chaining are as follows metric surveying chain tapes arrows pegs ranging rod. What are the instruments used for a chain surveying survey. Modern surveying instruments and their uses in civil. Chain surveying it is the simplest and oldest form of land surveying of an area using linear measurements only. Surveying is classified based on various criteria including the instruments used, purpose, the area surveyed and the method used. Instruments used in chain survey chain used for surveying. Enumerate the instruments used for measurement of lengths of survey lines. Chain surveying instruments used in chaining engineering basic. What is chain surveying part 1 ssc je preparation 2018.

Chains or tapes are used to measure distances on the field. Surveying is an art of determining the relative positions of various points on, above or below. At the survey mark, firmly set the tripod with its legs spread. It measures a series of straight lines on the ground with a chain or tape measure and all fixed points relative to the line of traverse either by right angles offsets or tie lines. This instrument is used for setting out lines at right angle to. In cold or hot weather when vehicle climate controls are used, survey instruments should be acclimated to outside conditions for an adequate period of time prior to final setup adjustments. Do not set an instrument in front of or behind a vehicle or equipment that is likely to move.

Instruments used for chain surveying principle of chain surveying, advantages and disadvantages of chain surveying advantages. Wooden pegs are used in measuring a length of a line to mark the end points of the line. Knowing instruments before start of any work is very important as far as success or failure of the surveying is considered. For less precise works chain is used whereas, for more accurate and precise work other types of surveys are used. Amongst the various methods of surveying, the commonly used method is called chain surveying. The various instrument used for the determination of the length of the line by chaining are as follows.