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Which of the following sight is applicable for a change point
- a)Back sight
- b)Intermediate and fore sight
- c)Fore sight
- d)Back sight and fore sight
Correct answer is option 'A'. Can you explain this answer?
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Which of the following sight is applicable for a change pointa)Back si...
The correct answer is option 'A', Back sight.
In surveying, a back sight is a sighting made on a known point before starting a survey to establish the starting point or elevation of a survey. It is used to establish an initial point of reference, or a "starting point," for the survey. A back sight is typically taken on a previously established benchmark, such as a survey monument or known elevation point. Once the back sight is taken, the surveyor can then begin to take measurements to other points, such as intermediate or fore sights. Back sight is used in traversing and leveling to set up the instrument at the starting point of a traverse or leveling run.
It is not applicable for a change point which is a point that marks a significant change in the direction of a survey line or the elevation of a point.
Most Upvoted Answer
Which of the following sight is applicable for a change pointa)Back si...
Back sight and fore sight:
Back sight and fore sight are two important measurements taken in surveying to determine the change in elevation or location of a point.
Back sight:
- A back sight is a measurement taken on a point of known elevation.
- It is used as a reference point to set up the instrument and begin the survey.
- The back sight reading helps in establishing a starting point for the survey.
Fore sight:
- A fore sight is a measurement taken on the point where the change is to be determined.
- It is used to determine the elevation or location of the point being surveyed.
- The fore sight reading helps in calculating the difference in elevation from the back sight point.
Applicability for a change point:
- In order to determine a change point, both back sight and fore sight readings are necessary.
- The back sight provides the reference point or starting elevation, while the fore sight gives the elevation of the point being surveyed.
- The difference between the back sight and fore sight readings helps in calculating the change in elevation or location of the point.
Therefore, the combination of back sight and fore sight readings is applicable for determining a change point in surveying.
Back sight and fore sight are two important measurements taken in surveying to determine the change in elevation or location of a point.
Back sight:
- A back sight is a measurement taken on a point of known elevation.
- It is used as a reference point to set up the instrument and begin the survey.
- The back sight reading helps in establishing a starting point for the survey.
Fore sight:
- A fore sight is a measurement taken on the point where the change is to be determined.
- It is used to determine the elevation or location of the point being surveyed.
- The fore sight reading helps in calculating the difference in elevation from the back sight point.
Applicability for a change point:
- In order to determine a change point, both back sight and fore sight readings are necessary.
- The back sight provides the reference point or starting elevation, while the fore sight gives the elevation of the point being surveyed.
- The difference between the back sight and fore sight readings helps in calculating the change in elevation or location of the point.
Therefore, the combination of back sight and fore sight readings is applicable for determining a change point in surveying.
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Which of the following sight is applicable for a change pointa)Back sightb)Intermediate and fore sightc)Fore sightd)Back sight and fore sightCorrect answer is option 'A'. Can you explain this answer?
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