Double Bark Thickness Calculator

Actual diametral DOUBLE bark thickness OD−ID, not average RADIAL thickness(OD−ID)/2.

Description

Double bark thickness is a diametral difference, twice the corresponding radial-thickness convention.

Double bark thickness is a diametral difference, twice the corresponding radial-thickness convention.^[1]

This tool subtracts recorded under-bark diameter from over-bark diameter without halving the result.

When to use Double Bark Thickness Calculator

Use this tool to calculate recorded under-bark diameter from over-bark diameter without halving the result.

How to use Double Bark Thickness Calculator and how it works

Prepare actualOverBarkDiameter, actualUnderBarkDiameter, with the units, conventions and assumptions below.
Enter the required fields and run Double Bark Thickness Calculator.
Read result.value using the output definitions below.
Correct any rejected inputs and rerun; interpret the result within the stated model and its assumptions.

Input field	Meaning	Value type	Requirement
actualOverBarkDiameter	Actual Over Bark Diameter. Use the units and matching context stated in the calculation below.	number	Required; strictly positive; finite; other constraints below
actualUnderBarkDiameter	Actual Under Bark Diameter. Use the units and matching context stated in the calculation below.	number	Required; nonnegative; finite; other constraints below

Require a positive over-bark diameter and nonnegative under-bark diameter in matching units, with the outer diameter at least the inner. Return outer minus inner, representing the combined thickness across two radial sides. Divide separately by two only if a single-side estimate is appropriate.

doubleBarkThickness=overBarkDiameter-underBarkDiameter

Apply the input ordering, units and branch conditions stated above.

Output field	Meaning	Value type
result	Object containing the calculated or selected fields below.	object
result.value	Diameter or combined bark thickness in the supplied length unit, as defined above.	number

json

{
  "input": {
    "actualOverBarkDiameter": 10,
    "actualUnderBarkDiameter": 8
  },
  "output": {
    "result": {
      "value": 2
    }
  }
}

Limitations and assumptions

The calculation uses the supplied observations and model inputs. It does not collect measurements, select a reference population or coefficient, or establish that the model applies to the actual case. The stated branch conditions and output units remain part of the result.

All fields require explicit values. Unexpected fields, wrong types, nonfinite numbers and sparse arrays are rejected. Alignment, bounds and supported-token rules are explained above; extremely large inputs or nonfinite results can also fail. Input errors differ from successful false comparisons, unavailable-domain flags and empty match lists.

Alternative or Complementary methods

Use Under Bark Diameter Calculator for a complementary operation: Under-bark diameter subtracts bark thickness on both sides of an over-bark diameter.

Use Stems Per Hectare Density Calculator for a complementary operation: A sampled stem-density estimate depends on independently qualified live stems and measured plot area.

References

Double Bark Thickness Calculator — tool.io

Similar or alternative tools

Under Bark Diameter Calculator
Under-bark diameter subtracts bark thickness on both sides of an over-bark diameter.
Stems Per Hectare Density Calculator
A sampled stem-density estimate depends on independently qualified live stems and measured plot area.