The water ratio is an important factor in wood. It influences the density, the weight, the strength, the electrical properties and the durability. Solid wood cannot hold its dimension while the ambient humidity changes.
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How do you know the strength of a wood?
A good indicator of a wood's strength is its density — the weight for a given volume. This is measured by its specific gravity — the weight of a volume of wood divided by the weight of the same volume of water. Generally, the higher the ratio, the denser and stronger the wood.
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What are the factors affecting the strength of wood?
The strength of the wood is fundamentally affected by the direction in which it is loaded in relation to the grain. In the direction of the grain, the bending strength is directly proportional to the density of the wood. In uniform, flawless wood, the bending strength is as great as the tensile strength.
