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The magnetic bearing of a line in theodolite surveying is the horizontal angle measured clockwise from the magnetic north direction to the line. This bearing is used to orient the theodolite and accurately measure angles during surveying work. It is important to account for magnetic declination when converting magnetic bearings to true bearings.
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What are the aims and objectives of compass survey?
The aims of a compass survey are to determine the magnetic bearing of a line and to set out accurate directions on the field. Its objectives include establishing a reference direction, determining the magnetic declination, and providing a basis for orienting maps and conducting navigation activities.
What is the reason for measuring the bearing of survey lines in a compass traversing at both ends?
Measuring the bearing of survey lines at both ends ensures accuracy and reliability in determining the direction of the survey line. This helps in verifying and adjusting for any errors that may have occurred during the surveying process, ultimately leading to more precise results for mapping and construction purposes.
What is tie line in chain survey?
A tie line is a line which joins subsidiary or tie stations to the main line. The main object of running a tie line is to take the details of nearby objects but it also serves the purpose of a check line.
What is the control line in a land survey?
The control line in a land survey is a reference line established through surveying techniques to control the positioning and orientation of survey measurements. It is typically a straight line connecting known points on the ground, used as a reference for conducting accurate measurements and creating an accurate map or plan of the surveyed area.
What is an end line survey?
An end line survey is a survey conducted at the conclusion of a project or program to assess its impact, outcomes, and effectiveness. It is used to gather feedback from participants or stakeholders to understand the success of the initiative and identify areas for improvement in the future.
What are the aims and objectives of compass survey?
The aims of a compass survey are to determine the magnetic bearing of a line and to set out accurate directions on the field. Its objectives include establishing a reference direction, determining the magnetic declination, and providing a basis for orienting maps and conducting navigation activities.
How is azimuth projection of survey plans?
Its the whole circle bearing of a line.
What is the methods used in measuring right angle from the line of traverse?
If in the open, a magnetic compass, a theodolite, etc. If on paper, a protractor, a drawing compass, etc.
What is the reason for measuring the bearing of survey lines in a compass traversing at both ends?
Measuring the bearing of survey lines at both ends ensures accuracy and reliability in determining the direction of the survey line. This helps in verifying and adjusting for any errors that may have occurred during the surveying process, ultimately leading to more precise results for mapping and construction purposes.
What is magnetic bearing in geography?
Magnetic bearing in geography refers to the angle between the north direction and a line, typically measured in degrees. It helps determine the direction of one point from another using a compass. Magnetic bearings can be converted to true bearings by considering the magnetic declination.
How to Check vertical deviation of tower using theodolite?
To check vertical deviation of tower using theodolite, measure the distance between the target and the point of burst in the plane. There must be a normal line of position along a line perpendicular to the lateral deviation.
How do you set up equipment for a linear survey?
To set up equipment for a linear survey, first establish a baseline by marking the starting point and endpoint along the survey line. Next, set up a total station or theodolite at the starting point, ensuring it is level and properly calibrated. Use measuring tape or electronic distance measurement tools to measure distances along the line, and establish control points as needed for accuracy. Finally, ensure all equipment is securely positioned and ready for data collection.
What is collimation error in angular measurement?
Is error comes when the line of sight does not coincide with the optical axis of theodolite.
What is a blue line survey?
A blue line survey is a survey to establish the property boundary. The property line that is drawn as a result of the survey is called the blue line. Another type OS survey that is sometimes done for finacing and many other reasons is an ALTA survey which not only establishes the boundary, but also researches and shows any easements or existing features on the property such as the building and other topographical features.
What is the best description of a magnetic field line?
magnetic field line is an imaginary line showing magnetic energy between a north and south pole .
What is tie line in chain survey?
A tie line is a line which joins subsidiary or tie stations to the main line. The main object of running a tie line is to take the details of nearby objects but it also serves the purpose of a check line.
What is ordnance survey symbol?
it is a line
