What characteristic defines Class 6 heavy timber construction?

Class 6 heavy timber construction is primarily defined by its structural elements made from solid wood, which contributes to its strength and resilience. This type of construction utilizes large wooden beams and columns, allowing for expansive open spaces without the need for many interior load-bearing walls. The size and quality of the timber provide significant fire resistance, owing to the charring process that occurs during exposure to fire, which protects the inner wood from burning.

This inherent strength allows heavy timber structures to support considerable loads and also contributes to their durability over time. Unlike other construction types that rely on materials like reinforced concrete or steel, heavy timber utilizes the natural properties of wood, which can absorb shock and has a favorable strength-to-weight ratio.

Understanding this characteristic is essential for firefighters when preparing for potential structural fire scenarios, as it influences how the building behaves in a fire and affects firefighting strategies. Heavy timber buildings may perform differently in fire situations compared to those made of lighter materials or with additional framing systems, making it crucial for firefighters to be familiar with the unique attributes of Class 6 construction.