Florida Fire State Practice Exam

What class of building construction is referred to as heavy timber?

1. Class I

2. Class II

3. Class III

4. Class IV

The correct answer is: Class IV

Heavy timber construction is referred to as Class IV. This class is characterized by the use of large wooden beams and columns, which provides significant structural integrity and fire resistance due to the mass of the timber. The large cross-sections of the beams allow them to withstand fire exposure for a longer period, which can be beneficial in terms of safety and durability. Class IV buildings often feature inherent fire-resistive qualities due to the mass of the material used, which contributes to a slower rate of combustion. In heavy timber construction, the components such as trusses and floor systems are typically made from solid wood or glulam, making it different from the other classes of construction that may utilize less durable materials or lighter framing systems. This classification is significant in fire safety considerations, as it influences the building's behavior during a fire event and affects fire protection strategies.