If DBH is 15 inches, what is the approximate Dib?

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Prepare for the Forest Resources Management Exam. Study with flashcards and multiple choice questions, each offering hints and explanations. Ensure your success on the exam!

Multiple Choice

If DBH is 15 inches, what is the approximate Dib?

Explanation:
Diameter inside bark is smaller than DBH because bark adds to the outside diameter. To estimate DIB, subtract the bark thickness on both sides of the tree, since DBH = DIB + 2 × (radial bark thickness). If DBH is 15 inches and we use a typical approximate bark thickness of about 1.65 inches (radial), then DIB ≈ 15 − 2 × 1.65 = 11.7 inches. This yields a reasonable estimate across many species, though actual bark thickness varies with species, age, and site.

Diameter inside bark is smaller than DBH because bark adds to the outside diameter. To estimate DIB, subtract the bark thickness on both sides of the tree, since DBH = DIB + 2 × (radial bark thickness).

If DBH is 15 inches and we use a typical approximate bark thickness of about 1.65 inches (radial), then DIB ≈ 15 − 2 × 1.65 = 11.7 inches. This yields a reasonable estimate across many species, though actual bark thickness varies with species, age, and site.

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