Which term describes the moisture content of wood when it is in balance with the surrounding environment?

Which term describes the moisture content of wood when it is in balance with the surrounding environment?

• A. Hygroscopic equilibrium
• B. Oven-dry moisture content
• C. Moisture equilibrium
• D. Equilibrium moisture content

Answer: (D)

Wood is hygroscopic, so it gains or loses moisture until its moisture content matches the surrounding air. When temperature and relative humidity are steady, the wood reaches a balance point called equilibrium moisture content. This term specifically describes the moisture level at which the wood is in balance with its environment, and it changes with ambient conditions. Other terms either refer to completely dried wood (oven-dry content) or are vague/less standard, so they don’t convey the idea of balance with the environment as precisely as this one does.

Wood is hygroscopic, so it gains or loses moisture until its moisture content matches the surrounding air. When temperature and relative humidity are steady, the wood reaches a balance point called equilibrium moisture content. This term specifically describes the moisture level at which the wood is in balance with its environment, and it changes with ambient conditions. Other terms either refer to completely dried wood (oven-dry content) or are vague/less standard, so they don’t convey the idea of balance with the environment as precisely as this one does.