Хід роботи

1. Визначення вологості (W) зразка заболонної породи в % з точністю до 1% за формулою:

m-m₀

W = m₀  100%, %

де m – маса вологої деревини, гр.

m₀ – маса абсолютно сухої деревини, гр.

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1. Середня вологість визначається за формулою:

∑W

W = n , %

де W – вологість кожного зразка, %

n – кількість зразків (5 штук)

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2. Визначення вологості ядрових порід.

Для зразка: m-m₀

а) ядрової частини W₁ = m₀  100%, %

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m-m₀

б) заболонної частини W₂ = m₀  100%, %

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W₂ (Д²- d²) + W₁ • d²

в) вологість круглого лісоматеріалу: W = Д² , %

де Д – діаметр лісоматеріалу, мм

d – діаметр ядрової частини, мм

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3. Середня вологість визначається за формулою:

∑W

W_ср. = n , %

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