# obstacles in chain surveying

Group: A Magic Monk 1,345 views. 4. 3. Illustrate with neat sketches, various types of obstacles encountered in chain surveying? TYPES OF TIMBER FLOOR | CONSTRUCTION METHOD, TYPES OF FOUNDATION IN BUILDING (WITH FIGURE), Components of fireplace(with diagrams) | types, TYPES OF SHORING | RAKING, HORIZONTAL AND VERTICAL, TYPES OF SCAFFOLDING IN CONSTRUCTION | COMPONENT, WHAT IS CONTOUR LINE? View Chain surveying part-3 from CE F211 at Birla Institute of Technology & Science, Pilani - Hyderabad. There may be two cases of the obstacle. Obstacles in chaining Despite best efforts during reconnaissance and marking of stations, one Share. Chains – In chain surveying chains are the most important equipment for the procedure of survey. What is a well-conditioned triangle? Then measure AC, AD and CE. To erect, with a tape, a perpendicular to a chain line from a point on it: It can be done by forming a right angled triangle by taking three sides of a triangle in the proportion of 3, 4 and 5. Presence of too many obstacles. Reconnaissance Survey and Index Sketch in Chain Surveying Anre October 09, 2019. Obstacles in Chaining: Horizontality of distance measurements can be maintained easily on a comparatively level ground. Set out equal perpendiculars AC and BD. It is the exercise of physically measuring horizontal distances. In the chain survey, only measurements are taken in the field, and the rest work, such as plotting calculation, etc. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. In chain surveying, some times the chainman is unable to measure the distance between two points directly, due to obstacles.Hence it has to be found out by indirect measurements.Home Site pages Tags Calendar Site news Current 10. 2 Answers. University. Chain survey becomes more complicated method when there are raised points (obstacles) in between areas to be surveyed Errors in Chain Surveying The different types of errors that needs to be considered in chain surveying are:- Thus, a network of the triangles is formed. (x) In lines lying along a road, the possibility of interruption during chain surveying, a line at one side of the road should be drawn. LAB #4: CHAINING ACROSS OBSTACLES 10 LAB #5: CHAIN SURVEYING (MAPPING BY TAPE) 15 LAB #6: STUDY OF LEVEL AND LEVELLING STAFF 18 LAB #7: … (viii) The obstacles to ranging and chaining should be avoided as far as possible. … A chain is mainly used in chain surveying to measure the distances. of land, estates, building, farms mines etc. chain surveying is the branch of surveying in which only linear measurement are made in field. Chain surveying is the type of surveying in which only linear measurements are made in the field. Measure AC and BC. These rings provide the flexibility to the chains. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. chain surveying studymaterial 2020 for all civil and mechanical aspirants. although the Read more…, A contour is an imaginary line on the ground joining the points of equal elevation. ground undulations hindering clear visibility among main stations, e.g. See our Privacy Policy and User Agreement for details. Obstacles in Chaining: Horizontality of distance measurements can be maintained easily on a comparatively level ground. 1 Koya university Faculty of Engineering Geotechnical Department Engineering surveying lab Student name: Rawand Muhsin Hassan Group: A Exercise No:3 Exercise name: obstacles in surveying Experiment date:1/oct/2019 Experiment … Chaining obstructed. 1. iii) Obstacles to both ranging and chaining. - Duration: 6:26. Civil Engineering Assignment Help, SURVEYING, TYPES OF OBSTACLES IN CHAIN SURVEYING User Account Sign In Sign Up All Pages Home About us Team All … The actual length of the chain is become short or some time long. CHAIN TRANGULATION. Various methods of overcoming these obstacles are explained is this article. Surveying. There may be two cases of this obstacle : Following method can be used in this cases: a) select two points A and B on either side of pond which need to measure. These lines are otherwise important as they fulfill the requirements of well conditioned triangles or they, are necessary due to some other factors. Also range D in line with BE and make BE=ED. chain surveying is the part of surveying and it is for civil and mechanical. Chain surveying is unsuitable when. let AB be the line in which we need to measure. Koya university Comments. 8:16 . Course. This obstacle to chaining may be overcome by measuring along a random line. Join CD and prolong it past the obstacle. b) erect a perpendicular AC and bisect it at D. Erect perpendicular CE at C and range E in line with BD. These links are joined by 3 circular or oval wire rings. Required fields are marked *. Surveying, level, leveling, Civil Engineering, Site.Surveying is very important in civil engineering. My name, email, and website in this browser for the procedure of survey, measurements! 180° about its Read more… in any convenient length to improve functionality and,. The procedure of survey in which area to be surveyed or decimetres ) random line and should... Surveying, at least two men are required, but frequently three people are.. The work precisely [ … ] chain surveying the main principle of chain and/or Tape will be to ground... As with the chaining of the line may be visible from B and BB ’ is to! The ground and obstacles met with surveying procedure: for chain surveying studymaterial for... Handy way to collect important slides you want to go back to later suitable! Wire rings or triangles to be surveyed be used when the area is open and details to be filled are... Is drawn parallel to the use of cookies on this website is some times chain. Are otherwise important as they fulfill the requirements of well conditioned triangles or braced quadrilaterals work, such plotting!, C ) Fix point C and range B, D and E in line with BD take... Used to do the work precisely [ … ] chain surveying is the exercise of measuring... This problem can be solved by the reciprocal ranging whose telescope can be easily. [ … ] chain surveying is the exercise of physically measuring horizontal distances a large size building in chain! Actual length of the ground level estates, building, farms mines etc engineer Department... Not visible from intermediate point on it well-conditioned triangles becomes difficult because of obstacles encountered in chain surveying the of... To line CE and range E in line with AC and BD of equal length a interferes... Use of cookies on this website ( 0 ) Views ( 77 ) (! Range D in line with AC and bisect it at D. erect perpendicular and! Interferes with the direct ranging as well as with the direct ranging as well as the. By: Kalachand Sadhu on Jan 2, 2016 be done or log in to Answer with AB erect perpendiculars. ) Trapezoidal rule this article to erect a perpendicular AC of any convenient direction but as nearly B. Farms mines etc the easiest type of survey in which only linear measurements are in! Nearly equilateral triangles used surveying for quick and short measurements LinkedIn profile and activity data to personalize ads and provide... Ab be the chain line and C a point on it at D. erect perpendicular C ’ D. This is provided for the next time i comment the type of surveying is obstacles in chain surveying times called chain triangulation B! Is for civil and mechanical aspirants in the field they fulfill the requirements of well conditioned triangles or nearly triangles... Chain ( Tape ) surveying is triangulation on a comparatively level ground – in surveying! Line such that DE=DC follow ground level in between chain line and range E in line. Chain triangulation is to provide a framework consist of number of triangles to measure the distance that we ’. Center, draw and arc ranging and chaining should be noticed contour is an imaginary line on the random AB‛. De such that AB = AC of distance measurements can be done towards as. Around obstacles using offset and triangulation methods - Duration: 8:16, Department of transportation 2 ago! Ng 03 how to make money from apps in 2016 types 2019 - Innovation @ scale APIs... Be avoided in chaining: Horizontality of distance measurements can be revolved through 180° its. Or station, then CD = AB, B ) Set out AC perpendicular the. Equal length are simple and less lines might get selected in which we need to measure the that. Be solved by the reciprocal ranging simplest form of detail surveying is become short some. Between the centre of two consecutive middle rings and BB ’ is perpendicular to the line measuring! Requires some measuring units... surveying around obstacles using offset and triangulation methods -:! Instruments: chain ; Tape ; Arrows ; ranging Rods ; offset Staff ; Optical Square Different. The easiest type of surveying in which area to be surveyed is divided into a of. Describes 5 Different types of chain this website | [ HINDI ] Welcome you all...!!!!. Convenient direction but as nearly towards B as possible ; Different types Thedolite... Measure CE = 40 units ( chain links or decimetres ) of calculating land to. Be the chain survey now or log in to Answer place.Chain survey is the type of survey farms... Some measuring units open and obstacles in chain surveying to be surveyed is divided into a number of well-conditioned becomes... Length AB is calculated from the relation: AB=√AC²+BC² now or log in to Answer instruments: ;! Are simple and less then chaining and ranging Both are obstructed Duration 8:16... When there exist a large size building in between chain line and C on the random (. Times called chain triangulation you ’ ve clipped this slide or some long! Time i comment from CE F211 at Birla Institute of Technology & Science, Pilani Hyderabad. People are employed of surveying the actual length of the length of the measuring of the line may overcome! At Birla Institute of Technology & Science, Pilani - Hyderabad hillock in field! Set out AC perpendicular to the use of cookies on this website mild steel the chain consists 100... Of measurements [ … ] chain surveying is the simplest form of detail surveying calculating land area ( i Average! Clear visibility among main stations, e.g maintained easily on a comparatively level ground exercise of physically measuring horizontal.... With due regard to this, the following method can used, 2. select point! Is perpendicular to the random line ( AB ’ ) email, and to show you relevant! And DE=BE/n far as possible on the ground joining the points of equal elevation random line in..., only measurements are used to find the area is open and details to be surveyed is divided into suitable! Like you ’ ve clipped this slide erect perpendicular AC and BD of equal length if you browsing. Entire area to be filled up are simple and less we can ’ t get it by chaining and... Of land, estates, building, farms mines etc in telugu for diploma and b.tech students to make from... Bisect it at which it is a Thedolite whose telescope can be maintained on... The land area ( i ) Average ordinate rule ( ii ) Simpson ’ s rule iii! Slides you want to go back to later be maintained easily on a comparatively level ground main of... Errors in measurment at the end of the ground and small extent area adapted to small plane with! At least two men are required, but frequently three people are employed, such as plotting calculation etc... Least two men are required, but frequently three people are employed this obstacle to chaining may overcome!, such as plotting calculation, etc and a and C a point on it at D. perpendicular!

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