Wood-pile Volumetrics


#1

Does anyone have experience with calculating wood-pile volumetrics? Specifically pulpwood piles. Is there a standard coefficient for calculating the space between logs in a pile. For example, if the drone measures a pile of 10,000y³ does that mean there is 9000y³ of material (10% loss due to gaps between the logs)? Is there a compiled set of multipliers for things like rock-piles of various sizes, wood-piles of various sizes, etc?


#2

Hi @FieldTech,

Thanks for swinging by the DroneDeploy Forum. The volume measurement does not take the spaces between the wood-piles into account, meaning the volume measurement would be the overall volume of the pile.

I suggest taking a look at Volume Measurement with Drones as well.

Hope this helps.

Cheers,
Christina


#3

You would likely have to quantify or research that based on the characteristics of the logs you are using. Multiple large logs (e.g. Redwoods) will likely be different density than smaller logs (e.g. pine).


#4

I found this calculation by a mathemetician named Wright who calculates for woodpiles not stacked by hand with diameters less than 10".

If geometric volume is greater than or equal to 1 m3 or 35.3 ft3:
(6a) Adjusted Pile Volume (m3) = e(0.2106 + 0.7691 × ln(Geometric Volume (m3)))

Interestingly enough, the Geometric Volume is usually the hard number to quantify because it is determined by the overall shape of the pile. DroneDeploy does that for us. “e” is a constant in physics, so the calculation should be easy to quantify with a calculator.


#5

Awesome! Was just about to Google “circle packing in woodpiles”.