Repetition method - Revision history

The Anome: Changing short description from "Surveying method" to "Surveying technique"

2023-12-15T09:00:58Z

Changing short description from "Surveying method" to "Surveying technique"

← Previous revision		Revision as of 09:00, 15 December 2023
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	{{Short description\|Surveying ~~method~~}}		{{Short description\|Surveying technique}}
	In [[surveying]], the '''repetition method''' is used to improve precision and accuracy of measurements of horizontal angles. The same angle is measured multiple times, with the survey instrument rotated so that systematic errors tend to cancel. The [[arithmetic mean]] of these observations gives true value of an angle. The precision of the measurement can exceed the [[least count]] of the instrument. used.		In [[surveying]], the '''repetition method''' is used to improve precision and accuracy of measurements of horizontal angles. The same angle is measured multiple times, with the survey instrument rotated so that systematic errors tend to cancel. The [[arithmetic mean]] of these observations gives true value of an angle. The precision of the measurement can exceed the [[least count]] of the instrument. used.

The Anome: Adding short description: "Surveying method"

2023-12-15T09:00:45Z

Adding short description: "Surveying method"

← Previous revision		Revision as of 09:00, 15 December 2023
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			{{Short description\|Surveying method}}
	In [[surveying]], the '''repetition method''' is used to improve precision and accuracy of measurements of horizontal angles. The same angle is measured multiple times, with the survey instrument rotated so that systematic errors tend to cancel. The [[arithmetic mean]] of these observations gives true value of an angle. The precision of the measurement can exceed the [[least count]] of the instrument. used.		In [[surveying]], the '''repetition method''' is used to improve precision and accuracy of measurements of horizontal angles. The same angle is measured multiple times, with the survey instrument rotated so that systematic errors tend to cancel. The [[arithmetic mean]] of these observations gives true value of an angle. The precision of the measurement can exceed the [[least count]] of the instrument. used.

Rathfelder: removed Category:Engineering using HotCat

2018-02-24T21:55:36Z

removed Category:Engineering using HotCat

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	[[Category:Surveying]]		[[Category:Surveying]]
	[[Category:Civil engineering]]		[[Category:Civil engineering]]
	[[Category:Engineering]]

Guy Macon: Removing linkspam. Online course material that is not peer reviewed cannot be used as a source. See WP:SELFPUBLISH

2015-07-12T03:47:58Z

Removing linkspam. Online course material that is not peer reviewed cannot be used as a source. See WP:SELFPUBLISH

← Previous revision		Revision as of 03:47, 12 July 2015
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	In [[surveying]], the '''repetition method''' is used to improve precision and accuracy of measurements of horizontal angles. The same angle is measured multiple times, with the survey instrument rotated so that systematic errors tend to cancel. The [[arithmetic mean]] of these observations gives true value of an angle. The precision of the measurement can exceed the [[least count]] of the instrument. used.~~<ref name="NPTEL">{{cite web \| url=http://nptel.ac.in/courses/105107122/modules/module6/html/73.htm \| title=National Programme of Technology Enhanced Learning \| accessdate=6 September 2014}}</ref>~~		In [[surveying]], the '''repetition method''' is used to improve precision and accuracy of measurements of horizontal angles. The same angle is measured multiple times, with the survey instrument rotated so that systematic errors tend to cancel. The [[arithmetic mean]] of these observations gives true value of an angle. The precision of the measurement can exceed the [[least count]] of the instrument. used.

	The repetition method is used when high accuracy is required. For rough or approximate survey work, the ordinary method of measuring horizontal angles is used as it is less time consuming.<ref>Surveying Volume 1 by Dr. B.C Punmia, Dr. Ashok Kumar Jain and Dr. Arun Kumar Jain. published by Laxmi publications New Delhi. Retrieved on 6 September 2014</ref>		The repetition method is used when high accuracy is required. For rough or approximate survey work, the ordinary method of measuring horizontal angles is used as it is less time consuming.<ref>Surveying Volume 1 by Dr. B.C Punmia, Dr. Ashok Kumar Jain and Dr. Arun Kumar Jain. published by Laxmi publications New Delhi. Retrieved on 6 September 2014</ref>

Owais Khursheed: /* See also */

2014-12-13T19:54:57Z

Owais Khursheed: Spelling/grammar correction

2014-12-07T18:46:33Z

Spelling/grammar correction

← Previous revision		Revision as of 18:46, 7 December 2014
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	In [[surveying]], the '''repetition method''' is used to improve precision and accuracy of measurements of horizontal angles. The same angle is measured multiple times, with the survey instrument rotated so that systematic errors tend to cancel. The [[arithmetic mean]] of these observations gives true value of an angle. The precision of the measurement can exceed the [[least count]] of the instrument. used.<ref name="NPTEL">{{cite web \| url=http://nptel.ac.in/courses/105107122/modules/module6/html/73.htm \| title=National Programme of Technology Enhanced Learning \| accessdate=6 September 2014}}</ref>		In [[surveying]], the '''repetition method''' is used to improve precision and accuracy of measurements of horizontal angles. The same angle is measured multiple times, with the survey instrument rotated so that systematic errors tend to cancel. The [[arithmetic mean]] of these observations gives true value of an angle. The precision of the measurement can exceed the [[least count]] of the instrument. used.<ref name="NPTEL">{{cite web \| url=http://nptel.ac.in/courses/105107122/modules/module6/html/73.htm \| title=National Programme of Technology Enhanced Learning \| accessdate=6 September 2014}}</ref>

	The repetition method is used when high accuracy is required. For rough or approximate survey work, the ordinary method of measuring horizontal angles is less time consuming.<ref>Surveying Volume 1 by Dr. B.C Punmia, Dr. Ashok Kumar Jain and Dr. Arun Kumar Jain. published by Laxmi publications New Delhi. Retrieved on 6 September 2014</ref>		The repetition method is used when high accuracy is required. For rough or approximate survey work, the ordinary method of measuring horizontal angles is used as it is less time consuming.<ref>Surveying Volume 1 by Dr. B.C Punmia, Dr. Ashok Kumar Jain and Dr. Arun Kumar Jain. published by Laxmi publications New Delhi. Retrieved on 6 September 2014</ref>

	==See also==		==See also==

Wtshymanski: fix blunder

2014-12-05T15:48:57Z

fix blunder

← Previous revision		Revision as of 15:48, 5 December 2014
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	In [[surveying[]], the '''repetition method''' is used to improve precision and accuracy of measurements of horizontal angles. The same angle is measured multiple times, with the survey instrument rotated so that systematic errors tend to cancel. The [[arithmetic mean]] of these observations gives true value of an angle. The precision of the measurement can exceed the [[least count]] of the instrument. used.<ref name="NPTEL">{{cite web \| url=http://nptel.ac.in/courses/105107122/modules/module6/html/73.htm \| title=National Programme of Technology Enhanced Learning \| accessdate=6 September 2014}}</ref>		In [[surveying]], the '''repetition method''' is used to improve precision and accuracy of measurements of horizontal angles. The same angle is measured multiple times, with the survey instrument rotated so that systematic errors tend to cancel. The [[arithmetic mean]] of these observations gives true value of an angle. The precision of the measurement can exceed the [[least count]] of the instrument. used.<ref name="NPTEL">{{cite web \| url=http://nptel.ac.in/courses/105107122/modules/module6/html/73.htm \| title=National Programme of Technology Enhanced Learning \| accessdate=6 September 2014}}</ref>

	The repetition method is used when high accuracy is required. For rough or approximate survey work, the ordinary method of measuring horizontal angles is less time consuming.<ref>Surveying Volume 1 by Dr. B.C Punmia, Dr. Ashok Kumar Jain and Dr. Arun Kumar Jain. published by Laxmi publications New Delhi. Retrieved on 6 September 2014</ref>		The repetition method is used when high accuracy is required. For rough or approximate survey work, the ordinary method of measuring horizontal angles is less time consuming.<ref>Surveying Volume 1 by Dr. B.C Punmia, Dr. Ashok Kumar Jain and Dr. Arun Kumar Jain. published by Laxmi publications New Delhi. Retrieved on 6 September 2014</ref>

Wtshymanski: not how-to instructions, ce

2014-12-05T15:44:06Z

not how-to instructions, ce

← Previous revision		Revision as of 15:44, 5 December 2014
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	'''~~Repetition~~ method''' is ~~the~~ ~~method~~ of ~~measuring~~ ~~horizontal~~ ~~angles~~ ~~with~~ ~~more~~ ~~precision~~ ~~and~~ ~~accuracy~~. In ~~this method, the~~ same angle is measured 6 times~~. 3 each~~ with ~~face left and face right (face left means when horizontal circle is on~~ the ~~left~~ of ~~observer~~ ~~and~~ ~~face~~ ~~right~~ ~~implies~~ ~~when~~ ~~horizontal~~ ~~circle~~ is ~~on right of observer), the~~ [[arithmetic mean]] of these observations gives true value of an angle. ~~Also~~ ~~when the~~ precision of the ~~instrument is desired to be~~ ~~more~~ ~~than~~ the [[least count]] of the instrument, ~~this method is~~ used.<ref name="NPTEL">{{cite web \| url=http://nptel.ac.in/courses/105107122/modules/module6/html/73.htm \| title=National Programme of Technology Enhanced Learning \| accessdate=6 September 2014}}</ref>		In [[surveying[]], the '''repetition method''' is used to improve precision and accuracy of measurements of horizontal angles. The same angle is measured multiple times, with the survey instrument rotated so that systematic errors tend to cancel. The [[arithmetic mean]] of these observations gives true value of an angle. The precision of the measurement can exceed the [[least count]] of the instrument. used.<ref name="NPTEL">{{cite web \| url=http://nptel.ac.in/courses/105107122/modules/module6/html/73.htm \| title=National Programme of Technology Enhanced Learning \| accessdate=6 September 2014}}</ref>

		⚫	The repetition method is used when high accuracy is required. For rough or approximate survey work, the ordinary method of measuring horizontal angles is less time consuming.<ref>Surveying Volume 1 by Dr. B.C Punmia, Dr. Ashok Kumar Jain and Dr. Arun Kumar Jain. published by Laxmi publications New Delhi. Retrieved on 6 September 2014</ref>
	==Example==
	Consider horizontal angle AOB, where '''O''' is the station point.The steps followed to determine horizontal angle AOB by repetition method can be summarized in below mentioned steps:

	==Procedure==
	* Firstly the [[theodolite]] is mounted on tripod stand with its proper adjustments.
	* The theodolite is then centered over the selected station '''O''' and is properly levelled using its foot screws and the plate bubble is brought to the centre of the run. Then using its focusing screws the points '''A''' and '''B''' are properly sighted by telescope. Centering, levelling and focusing of theodolite are called as [[temporary adjustments of theodolite]].
	*The theodolite is set on the face left mode and vernier A is set on 0 by making it coincide with 0 of main scale with the help of upper clamp and its tangent screw and station A is sighted by using lower clamp and its tangent screw.<ref name="RM">{{cite web \| url=http://www.civilengineeringnews.tk \| title=Civil engineering hub \| accessdate=6 September 2014}}</ref> Also check whether vernier A still reads 0.<ref>A text book of surveying by Dr. C L Kochher. Retrieved in August 2014</ref>
	*Now unclamp the upper clamp and rotate the instrument towards B in clockwise manner until it is accurately bisected with the help of upper tangent screw. Note the readings of verniers A and B to get the value of angle AOB. Vernier A gives value of angle AOB directly while Vernier B gives value of angle by deducing its reading by 180.
	*Tight the upper clamp so that the vernier reading does not change and loose the lower clamp and turn the [[telescope]] clockwise to sight A again. Bisect A accurately by using lower tangent screw. Tight the lower clamp and unclamp the upper clamp, turn the telescope clockwise and sight B. Bisect B accurately using upper tangent screw.
	*Repeat the process until angle is measured required number of times usually 3.The average angle will be the arthemetic mean of total angle measured.
	*Same procedure can be used while computing values for face right mode.
	*The true value of horizontal angle is then computed by taking average of the angles obtained with face left and face right.<ref>{{cite book \| title=Surveying \| publisher=Laxmi publications New Delhi \| author=B.C. Punmai\| authorlink=Measuring Horizontal Angles \| year=2014}}</ref>

	==Conclusion==
⚫	~~Repetition~~ method is used when accuracy is ~~must~~. For rough or approximate survey work ordinary method of measuring horizontal angles is ~~preferred as it is~~ less time consuming.<ref>Surveying Volume 1 by Dr. B.C Punmia, Dr. Ashok Kumar Jain and Dr. Arun Kumar Jain. published by Laxmi publications New Delhi. Retrieved on 6 September 2014</ref>

	==See also==		==See also==

Owais Khursheed: (edited with ProveIt)

2014-10-29T06:57:58Z

(edited with ProveIt)

← Previous revision		Revision as of 06:57, 29 October 2014
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	'''Repetition method''' is the method of measuring horizontal angles with more precision and accuracy. In this method, the same angle is measured 6 times. 3 each with face left and face right (face left means when horizontal circle is on the left of observer and face right implies when horizontal circle is on right of observer), the [[arithmetic mean]] of these observations gives true value of an angle. Also when the precision of the instrument is desired to be more than the [[least count]] of the instrument, this method is used.<ref>~~National~~ ~~Programme~~ ~~on Technology Enhanced Learning official website.~~ http://nptel.ac.in/courses/105107122/modules/module6/html/73.htm. ~~Retrieved~~ on 6 September 2014</ref>		'''Repetition method''' is the method of measuring horizontal angles with more precision and accuracy. In this method, the same angle is measured 6 times. 3 each with face left and face right (face left means when horizontal circle is on the left of observer and face right implies when horizontal circle is on right of observer), the [[arithmetic mean]] of these observations gives true value of an angle. Also when the precision of the instrument is desired to be more than the [[least count]] of the instrument, this method is used.<ref name="NPTEL">{{cite web \| url=http://nptel.ac.in/courses/105107122/modules/module6/html/73.htm \| title=National Programme of Technology Enhanced Learning \| accessdate=6 September 2014}}</ref>

	==Example==		==Example==

Owais Khursheed: /* Procedure */

2014-10-29T06:53:30Z

Procedure

← Previous revision		Revision as of 06:53, 29 October 2014
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	*Repeat the process until angle is measured required number of times usually 3.The average angle will be the arthemetic mean of total angle measured.		*Repeat the process until angle is measured required number of times usually 3.The average angle will be the arthemetic mean of total angle measured.
	*Same procedure can be used while computing values for face right mode.		*Same procedure can be used while computing values for face right mode.
	*The true value of horizontal angle is then computed by taking average of the angles obtained with face left and face right.<ref>{{cite book \| title=Surveying \| publisher=Laxmi publications New Delhi \| author=B.C. Punmai~~, Ashok Kumar Jain and Arun Kumar Jain~~ \| authorlink=Measuring Horizontal Angles \| year=2014}}</ref>		*The true value of horizontal angle is then computed by taking average of the angles obtained with face left and face right.<ref>{{cite book \| title=Surveying \| publisher=Laxmi publications New Delhi \| author=B.C. Punmai\| authorlink=Measuring Horizontal Angles \| year=2014}}</ref>

	==Conclusion==		==Conclusion==

← Previous revision		Revision as of 19:54, 13 December 2014
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	==See also==		==See also==
	* [[Survey camp]]		*[[Survey camp]]
	* [[Temporary adjustments of theodolite\|Adjustments of theodolite]]		*[[Temporary adjustments of theodolite\|Adjustments of theodolite]]
	* [[Ranging rod]]s		*[[Ranging rod]]s
			*[[Prismatic compass (surveying)]]

	==References==		==References==