Heavy timber construction is a building method that utilizes large wooden beams to form the primary structural framework of a building.
This approach is defined by its use of substantial timber elements, creating robust and often visually striking structures. The beams central to this method can be one of two main types:
Types of Heavy Timber Beams
- Solid sawn: Traditional timbers cut directly from logs.
- Glue-laminated: Also known as Glulam, these beams are manufactured by bonding together individual laminations of dimension lumber with structural adhesives.
Both types provide the necessary strength and stability required for heavy timber construction.
Fire Rating
Interestingly, Heavy Timber is not just a construction technique; it is also a specific fire rated classification known as Class IV. Buildings constructed with large, heavy timber members tend to perform well in fires. This is because, unlike unprotected steel which can buckle under heat, heavy timbers char on the surface, creating an insulating layer that protects the core of the beam and allows it to maintain structural integrity for a significant period.
Summary of Heavy Timber Construction
To summarize the key aspects:
| Feature | Description |
|---|---|
| Method | Uses large wooden beams for building framework. |
| Beam Material | Glue-laminated or solid sawn wooden beams. |
| Classification | Specific fire rated classification (Class IV). |
This method is appreciated not only for its structural properties and fire resistance but also for its aesthetic appeal, often leaving the timber structure exposed to create a warm and natural interior environment.
