The line normal to the plumb line is known as -a)Horizontal lineb)Lev...
The line normal to the plumb line is known as the level line. A level line is a line parallel to the mean spherical surface of the earth or a line lying on a level surface.
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The line normal to the plumb line is known as -a)Horizontal lineb)Lev...
Understanding the Concept
The question revolves around the relationship between the plumb line and various types of lines used in surveying and construction.
What is a Plumb Line?
- A plumb line is a tool that consists of a weight suspended from a string that indicates the direction of gravity, pointing directly downwards.
- It establishes a vertical reference point.
Normal Line to the Plumb Line
- The line that is perpendicular to the plumb line is used to measure horizontal distances and elevations.
- This line is essential in construction and surveying for ensuring level surfaces.
Definition of a Level Line
- A level line is defined as a horizontal line that remains equidistant from a reference point, typically the surface of water at rest.
- It is crucial for ensuring that structures are built straight and true.
Why the Correct Answer is Level Line (Option B)
- The level line is directly associated with the plumb line as it provides a baseline for horizontal measurement.
- When a plumb line is dropped, the line that runs horizontally from that point is the level line.
- Thus, the line normal to the plumb line is indeed referred to as a level line.
Conclusion
- In surveying and construction, understanding these distinctions ensures accurate measurements and proper alignment of structures.
- The level line plays a vital role in achieving a flat and balanced construction.