Topmusicanswers
In plane surveying, the distance between two points means the horizontal distance. If the points are at different elevations, then the distance is the horizontal length between plumb lines at the points.
- What are the methods of horizontal distance measurement?
- Why do surveyors measure horizontal distances?
- How do you measure horizontal?
- How do you measure horizontal distance from a total station?
What are the methods of horizontal distance measurement?
Choosing the most suitable method
| Section1 | Method | Distance |
|---|---|---|
| 22* | Pacing with a passometer or podometer | Long |
| 21* | Ruler | Short |
| 23** | Chaining using a rope | Medium to long |
| 24** | Chaining using a band or tape | Medium to long |
Why do surveyors measure horizontal distances?
Surveying and highway construction practice use horizontal distances rather than slope distances. This is necessary because the horizontal distance between two points does not change even if the ground is disturbed.
How do you measure horizontal?
To measure a horizontal angle, stand at the angle's summit and measure the azimuth of each of its sides; calculate the value of the angle as follows. 10. If the magnetic north falls outside the angle, calculate the value of the angle between the two lines of sight as equal to the difference between their azimuths .
How do you measure horizontal distance from a total station?
When calculating the horizontal distance between points, this difference also needs to be taken into consideration. Because the total station gives a true slope distance, the horizontal difference is simply H = s * cos α (see figure below).
