All observations and measurements taken during chain surveying are to be recorded in a standard field book. Chain surveying requires chain, tape and ranging rods. Chain surveying method in civil engineering, how to. Procedure for surveying the given open field closed traverse.
Build up the other chain lines by using beam compasses. These types of chains comes in many lengths such as 5, 10, 20 and 30 meters. The distance ap and bp are measured and noted in the field book. 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.
Jun 16, 2015 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. Sep 09, 2016 demonstration of chain surveying related to field work and office work. Chain surveying or linear surveying surveying and levelling. Before chain survey is carried out area to be surveyed is inspected carefully to ascertain any difficulty encountered during actual survey work, this inspection is called recii. The formation of wellconditioned triangles becomes difficult due to obstacles. In chain survey, only measurements are taken in the field, and the rest work, such as plotting calculation etc.
Because the perpendicular is the shortest distance. So, this fieldwork aimed to train the student on the following process. Chain surveying definition, details, procedure civil. Principle of chain surveying, surveying and levelling agricultural engineering notes edurev notes for agricultural engineering is made by best teachers who have written some of the best books of agricultural engineering. The perpendicular distance, called offsets, of various objects in the field.
Types of obstacles in chain surveying linkedin slideshare. Demonstration of chain surveying related to field work and office work. The field book is an oblong book with a hinge at the narrow edge, and the chain is represented in it by one or two red lines or blue lines ruled. Singleline field book in this type of field book, a single red line is drawn through the middle of.
Chain survey chain survey is the simplest method of surveying. Chain survey method for performing chain surveying how to. Landsurveying may be considered the earliest practical application of the art of geometry or. Selection of the station, measurement of lines and taking offsets of different objects in the field reconnaissance. Tallies are provided at every 2m of the chain for quick reading. In this method the lengths of lines marked on the field are measured, while the. Selection of a framework chain or baselines and control points. Earlier, we discussed principles of chain surveying and the considerations that are taken for carrying out chain surveying in this article, we will discuss various instruments that are essential for carrying out chain surveying. Field book is an oblong book hinged at the narrow edge having a chain represented in it either by one or two red or blue lines ruled. Chain surveying in the field procedure of chain surveying.
From these records in the field book, the whole area can be plotted on a. This is the preliminary survey in which to the survey party will examine the plot to be surveyed in order to know as to how the works can be executed in the best possible. Jun 03, 2017 in this series of videos, we will teach you the basic maths used by a surveyor. Land surveying may be considered the earliest practical application of the art of geometry or earth measurement, and must have been in some more or lees rude form coeval with agriculture and the division or appropriation of the soil. Chain surveying is a type of survey in which the surveyor takes measurements in the field and then completes plot calculations and other processes in the office. Baseline equipment company 215 cap ct, ste a eugene, or 97402 877 8443101 fax. Public land survey system foundation 2009 manual of surveying instructions for the survey of the public lands of the united states. In this method thelengths of lines marked on the field are measured, while the details are measured byoffsets and ties from these lines. The surveyor is the person who is supposed to make precise measurement that will identify the boundary. Surveying1 syllabus civil engineering, regulation 2010. Viewer has to keep in mind that this video only shows the basics of chain surveying observation in field, it also. Oct 30, 2011 chain surveying or linear surveying surveying and levelling. Keeping the field bookobstacles in chain linesdetermination of areas example of calculation.
Chain surveying is the simplest method of surveying. The main requirements of the field book are that it should contain good quality stout opaque paper. Surveyor swings the tape on chain line and selects the point on the chain where offset distance is the least fig. Apart from recording linear measurements in this survey the bearings taken. Ppt chain surveying powerpoint presentation free to.
Chain surveying is the type of surveying in which only linear measurements are made in the field. What are the obstacles in chain survey and methods to. Compass surveying principles use of prismatic compass, measurement of. In chain surveying the sides of the triangles are measured directly on the field by chain or tape, and no angular measurements are taken. This procedure varies with the experiment given to students. Measuring distances along lines that run through obstacles. In this survey only measurements are taken in the field, and the rest work, such as plotting calculation. Surveying field books, engineering field books, mining field. There are two forms of the book i single line and ii double line. It is the method of land surveying in which only linear measurements are made.
Chain survey procedure, applicability, survey stations and their. In this video we cover how a surveyor draws a field book entry so we can understand it when we see one and be able. Types of chains used in surveying, their parts, testing and. Earlier, we discussed principles of chain surveying and the considerations that are taken for carrying out chain surveying in this. Surveyors help in providing unique contours on the surface of the earth which will let the engineers to make maps and construction projects. The field book is an oblong book with a hinge at the narrow edge, and the chain is represented in it by one or two red lines or blue lines ruled down centrally along the length of each page. In this method, the lengths of lines marked on the field are measured, while the details are measured by offsets and ties from. An assistant holds the end of the tape on the object. What is chain surveying principles, procedure, method. Conduct the survey work with chain, compass and plane table. Well conditioned triangles angles 30 120 44 choice of chain lines. Types of chains used in surveying, their parts, testing.
Sep 04, 2016 chain survey chain survey is the simplest method of surveying. What are roles and works of surveyor in construction. The main principle of chain surveying or chain triangulation is to provide a framework consist of number of wellconditioned triangles or nearly equilateral triangles. The chain should be properly stretched so that there is no sag in it.
Keeping the zero end of the tape at p and swinging the tape along the chain line the point of minimum tape length on the chain line is noted which should be the foot of the perpendicular. Rotate the compass until it is directed to the pole and read the angle. Chain surveying is considered to be the simplest method of surveying in which measurements are taken in the field and other supplementary works like. In this survey only measurements are taken in the field, and the rest work, such as plotting calculation etc. It should be attached to the starting page of the field book. Draw the check lines, and if there are any errors, check the drawn lines in the incorrect triangles. Field book is an oblong book hinged at the narrow edge having a chain represented in it either by one or two red or blue lines ruled down the centre of the length of each page. Field book all observations and measurements taken during chain surveying are to be recorded in a standard field book. Types of obstacles in chain surveying and and solutions. The chain is held horizontally with zero ends of it at p on the ground, while the point q1 vertically below the other end of the chain at q is found by means of a droparrow.
Field work in chain survey surveying in civil engineering. A doubleline field book is similar to its singleline counterpart, except it has a red line in the center, as well as two blue or red lines that are about 1. Chain and compass surveying field work civil engineering. Jul 20, 2018 suppose ab is a chain line and p is the corner of a building. If carefully done, it gives quite accurate results. Obstacles to ranging and chaining should be avoided. Chain tape surveying is the simplest form of detail surveying. It is an oblong book of size about 20 cm x 12 cm and opens lengthwise. In this method the lengths of lines marked on the field are measured, while the details are measured by offsets and ties from these lines.
In chain surveying the sides of the triangles are measured directly on the field by. Surveying maths a lesson 5 drawing a field book entry. Usually, you will be able to reach all the points of the straight line you want to measure. Surveying or land surveying is the technique, profession, art and science of determining the terrestrial or threedimensional positions of points and the distances and angles between. The notebook in which field measurements are noted is known as the field book.
To survey an open field by chain survey in order to calculate the area of the open field. Field work in chain surveying surveying and levelling. Recording the measurements in the field book field. Surveyor swings the tape on chain line and selects the point on the chain where. Touhid ahamed faculty iubat chain surveying definition chain survey is the. In this method, the lengths of lines marked on the field are measured, while the details are measured by offsets and ties from these lines. The length of the chain, of course, depends upon the steepness of the sloping surface. Recording chain and compass measurements the type of field book used in chain survey is used in this survey also.
Various types of obstacles we need to overcome in the process of measuring distance between two points. In this video we cover how a surveyor draws a field. Selection of survey stations chain surveying, surveying. Suppose ab is a chain line and p is the corner of a building. The booking or recording of the field work is commenced from the bottom of the first page. 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. This is most suitably adapted to small plane areas with very few details.
The elements of surveying and geodesy survivor library. Pugh j c 1975, surveying for field scientists, methuen, 230pp, isbn 0416075304 genovese i 2005, definitions of surveying and associated terms, acsm, 314pp, isbn 0976599104. Surveying is an art of determining the relative positions of various points on, above or below the surface of the earth by means of direct or indirect measurement of distance, direction and elevation. These spaces represent the chain line and are meant to record any changes that need to be kept separate. Aug 26, 2017 in this method, a portion of the chain, 15 ft to 30 ft is generally used. Surveying field books, engineering field books, mining. Each chain line is represented by double line drawn through the corner of the page.
Chain surveying is not suitable for large areas having many details. Measure the change and offset and enter in the field book. Aug 03, 2018 chain surveying in the field procedure of chain surveying. Surveying line, triangle, ground, offsets, chain, laid. Chain surveying method in civil engineering, how to perform. In this series of videos, we will teach you the basic maths used by a surveyor. There are three stages you have to go through while doing chain surveying these are. May 23, 2019 chain survey is the simplest method of surveying. Bookingthe field book should be neat and consistent. Principle of chain surveying, surveying and levelling. Surveying maths a lesson 5 drawing a field book entry youtube. This is most suitable adapted to small plane areas with very few details. Principles of chain surveying or linear surveying civil.
This means that the area to be surveyed is divided. Apart from recording linear measurements in this survey the bearings taken also should be recorded. In this method, a portion of the chain, 15 ft to 30 ft is generally used. The chain remains on the ground while the offset and the booking parties do their work booking is the process of entering measurement in the field book, rule and pencil or notebook by using ordinally exercise book start from the bottom of the page and as you go around the chain line, you walk upward after which the leader take his hand to the.
A b 180 electric pole 168 tree 142 120 85 10 27 40 line da linega fence 5 12 20 30 35 t1 line t1 t2 tie linebc. Surveying1 syllabus diploma in civil engineering, regulation 2010 to provide the students with an opportunity to acquire knowledge and skills about. As the measurement proceeds, offsets are taken on both sides of the line ab and recorded in the field book. May 03, 2020 principle of chain surveying, surveying and levelling agricultural engineering notes edurev is made by best teachers of agricultural engineering. What are the obstacles in chain survey and methods to correct. Metric chains are the most commonly used chain in india. Chain surveying notes the author is a lecturer at kabale. During this inspection surveyor ensure solution of such difficulties, these difficulties are termed as obstacles, to be more precise there are two types of obstacles a. The chain remains on the ground while the offset and the booking parties do their work booking is the process of entering measurement in the field book, rule and pencil or notebook by using. What is chain surveying principles, procedure, method, instrument. Apr 28, 2020 selection of survey stations chain surveying, surveying and levelling agricultural engineering notes edurev is made by best teachers of agricultural. Surveying is an art of determining the relative positions of. Viewer has to keep in mind that this video only shows the.
The procedure of chain surveying is very simple and straightforward. Oct 09, 2010 before chain survey is carried out area to be surveyed is inspected carefully to ascertain any difficulty encountered during actual survey work, this inspection is called recii. The surveyors have to measure the distance and the angles. The size of the field book is 20 cm x 12 cm and it opens lengthwise. The book in which the chain or tape measurements are entered is called the field book. The necessary requirements for field work are chain, tape, ranging rod, arrows and.
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