Moisture Mapping is a specialized technique that comprehensively evaluates the moisture distribution within a wooden structure. This information is crucial for assessing the structural integrity, durability, and overall performance of the wood.

### Wood Moisture Content

Wood moisture content (MC) is the percentage of water present in wood compared to its oven-dry weight. MC plays a vital role in the mechanical properties, durability, and stability of wood.

### What is the Moisture Content in Wood?

The moisture content of wood can fluctuate based on external factors such as humidity, temperature, and moisture exposure. The MC can be categorized into three primary ranges:

– **Fiber Saturation Point (FSP):** At this point, all the cell walls within the wood are saturated with water. Typically, this occurs around 25-30% MC.
– **Hygroscopic Range:** Within this range (typically between 5-15%), the wood will absorb or release moisture to maintain equilibrium with the surrounding environment.
– **Dry Range:** When the MC falls below the hygroscopic range, the wood becomes drier. In this range, the wood’s mechanical strength increases as the moisture content decreases.

Understanding wood moisture content is essential for:

– **Preserving Structural Integrity:** Excessive moisture can weaken wood, leading to structural damage or failure.
– **Preventing Fungal Decay:** Fungi thrive in moist environments. Controlling moisture content can reduce the risk of fungal growth.
– **Maintaining Stability:** Fluctuations in MC can cause wood to shrink or swell, affecting the stability of wooden structures.
– **Ensuring Durability:** Optimal moisture content enhances the durability and longevity of wood structures.