Abstract
By several tests and by means of an electronically measuring system, it was possible to determine the exactness of the currently measuring methods for industrial timber including a statistically interpretation. Therefore, 33 stacks of wood with different size, has been measured tree-by-tree after applying the sectional volumetric measurement and the weight control, for determine the resulting differences in volume.
Referred to the total amount of the tested volume, the mean percentage deviation is + 0.92 % using the sectional volumetric measurement and + 0.54 % using the weight control. The graphs of the percentage deviation give an overview about how the measurements of the several tests deviate. Using the sectional volumetric measurement, a notable lower variance of the determined measured value in contrast to the weight control can be noticed. Using the sectional volumetric measurement, 75.8 % of the tests reached an accuracy result of ± 5 %, in case of the weight control only 33.3 %.
Referred to the total amount of the tested volume, the mean percentage deviation is + 0.92 % using the sectional volumetric measurement and + 0.54 % using the weight control. The graphs of the percentage deviation give an overview about how the measurements of the several tests deviate. Using the sectional volumetric measurement, a notable lower variance of the determined measured value in contrast to the weight control can be noticed. Using the sectional volumetric measurement, 75.8 % of the tests reached an accuracy result of ± 5 %, in case of the weight control only 33.3 %.
| Translated title of the contribution | Comparison of volumetric measurement method and weight control for industrial timber with tree-by-tree measurement in the plant |
|---|---|
| Original language | German |
| Pages (from-to) | 37-52 |
| Number of pages | 16 |
| Journal | Austrian Journal of Forest Science |
| Volume | 134 |
| Issue number | 1 |
| Publication status | Published - 2017 |
Keywords
- Industrial timber
- Stacked wood
- Sectional volumetric measurement
- Oven-dry weight
- Tree-by-tree plan measurement