The Multi-Stem DBH Calculator feature in TreePlotter INVENTORY™ allows users to record diameter measurements for trees with multiple stems, automatically calculating the overall DBH (Diameter at Breast Height).
Topics covered in this Tutorial:
- Formula
- Accessing the Calculator and Entering Measurements
Formula
The overall DBH of a multi-stemmed tree equals the square root of the sum of each stem’s diameter squared.
Accessing the Calculator and Entering Measurements
You can access the a Multi-Stem DBH calculator via the Number of Stems field in the Tree Details form.
- Select the ‘Multiple Stems’ for the Number of Stems field.
This greys out the DBH field and the calculator will appear. - Enter as many DBH values as necessary and the DBH will automatically calculate as you do so.
Note: You can click the ‘TOGGLE MULTI-DBH CALC’ button to hide the calculator while you aren’t updating DBH values.
Known Limitations:
- This tool is available in TreePlotter INVENTORY applications, and access may depend on your user permissions.
- Selecting ‘1’ in the Number of Stems fields does not clear the entries in the DBH Stem measurement fields within the Multi-Stem Calculator. They must be manually cleared. (This may become particularly important when using the ‘Load Last’ button. Ensure that the DBH measurements and entries are correct for each individual Tree.)
- If the Multi-Stem calculator doesn’t appear in your Tree Details form, contact PlanIt Geo Support at support@planitgeo.com.
- The default configuration allows for up to 6 DBH stem measurements. For additional measurement fields, reach out to PlanIt Geo Support at support@planitgeo.com.