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…
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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.