Reliability for measuring "holes in the ground" (Quarries; Sand Pits)


#1

I have a client who wishes to measure the void volume of a sand pit (negative volume). I’ve heard it said that “below ground” volumetrics using DD are not as reliable as “above ground” volumetrics. Can anyone chime in on this? Is there a recommended technique to ensure an accurate measurement for pits? What is the margin of error? Thanks in advance…


#2

You might check out these documents from our FAQ page and blog.

How Accurate is My Map?

Drone-based Volume Measurement
New Elevation And Volume Tools For Mining and Construction
Drone Maps Enable Instant, Accurate Volume Analysis

Feel free to contact us if you have any other questions.


#3

No issues here. We have tested voids, ponds and stockpiles against traditional survey and there is little more than 2-3% error across the board. Verified by trucking as well. That was more like 5%, but we already know truck ticket aren’t always right.