The reaction of wood to fire conditions mainly depends on which two factors?

The reaction of wood to fire conditions is significantly influenced by the size of the wood and the moisture content. Larger pieces of wood tend to burn more slowly due to their mass, which allows them to absorb heat without reaching their ignition point as quickly as smaller pieces would. On the other hand, moisture content plays a critical role in wood's combustibility. Wood with high moisture content requires more energy to evaporate the water before it can ignite, thus slowing down the combustion process.

When wood is seasoned and has a lower moisture content, it will ignite more readily and burn hotter and more quickly. Understanding these two factors is essential for evaluating fire behavior in wooden structures, which is crucial for fire prevention and safety measures.