12.1.2. Electronic Distance Meter (EDM)

Try these first

1. 1.

   What does EDM stand for in surveying?

   Hint

   Think about what it measures.

2. 2.

   What type of waves do EDMs use for distance measurement?

   Hint

   These are part of the electromagnetic spectrum.

3. 3.

   What does EDM stand for?

   • Electronic Distance Meter
   • Electromagnetic Distance Measurement
   • Electronic Dynamic Module

   Hint

   Focus on what the device measures.

4. 4.

   True or False: The accuracy of an EDM using prisms is typically ±(2 mm + 2 ppm).

   • True
   • False

   Hint

   Remember the accuracy values specified in the text.

5. 5.

   Consider a construction site where two EDMs measure the same distance but yield different readings due to environmental interference. Discuss potential causes for this discrepancy and methods to mitigate such effects.

   Hint

   Think about how environmental conditions might change during a day.

6. 6.

   Analyze a scenario where an EDM is used incorrectly, resulting in an construction failure. What steps would you recommend to prevent this in future projects?

   Hint

   Reflect on past mistakes that could lead to similar issues.