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Knowledge
The chapter focuses on the measurement of distances in surveying, exploring both direct and indirect methods. Direct methods include pacing, the use of passometers and odometers, while indirect methods involve tools like chains and tapes. Additionally, the chapter covers ranging survey lines, the importance of bearings, and various types of magnetic compasses, emphasizing their roles in providing accurate measurements and directions.
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Sections
References
1c.pdfClass Notes
Memorization
What we have learnt
- Horizontal distance measure...
- Different tools and methods...
- Ranging methods and magneti...
Final Test
Revision Tests
What we have learnt
- Horizontal distance measurement is critical in surveying.
- Different tools and methods are utilized for measuring distances with varying accuracy.
- Ranging methods and magnetic bearings play significant roles in survey line establishment.
Key Concepts
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Term: Direct Methods
Definition: Methods that physically measure distance straight between two points, such as pacing or using measuring devices.
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Term: Indirect Methods
Definition: Techniques used when direct measurement is impractical, relying on additional calculations or tools like tapes and chains.
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Term: Bearing
Definition: The direction of a survey line relative to a reference meridian, expressed in degrees.
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Term: Ranging
Definition: A process to ensure measurements are taken in a straight line, which can be either direct or indirect depending on visibility.