A structural timber framing system is a construction method primarily used for building load-bearing walls.
Understanding the Timber Frame System
The timber frame construction system, also known as a system with framed load-bearing walls, is a popular method characterized by its specific structural approach.
According to the definition, this system is characterised by the construction of load-bearing walls through a frame consisting of struts, which is then filled with insulating material and stiffened with OSB panels.
Key Components
In a typical timber frame system for walls, you will find:
- Struts: These are the vertical and horizontal timber members (like studs and plates) that form the core frame. They bear the structural loads from the roof and upper floors and transfer them down to the foundation.
- Insulating Material: The spaces between the struts are typically filled with various types of insulation to provide thermal and acoustic performance.
- OSB Panels: Oriented Strand Board (OSB) panels are fastened to the exterior and/or interior side of the timber frame. They serve to stiffen the frame, providing shear resistance and contributing to the structural integrity of the wall against lateral forces like wind.
This combination of a timber skeleton, insulation infill, and rigid sheathing creates a lightweight yet strong wall assembly capable of supporting the building's structure.
How it Works
- A frame of timber struts (vertical studs, horizontal plates, etc.) is erected.
- This frame forms the basic structure and defines the wall cavities.
- Insulating material is placed within these cavities to enhance energy efficiency.
- OSB panels are applied to the frame, creating a rigid box that prevents the frame from racking (leaning sideways).
- Finishes (like cladding, drywall) are then applied over the OSB panels and insulation.
This system is widely used due to its speed of construction, sustainability potential (depending on the timber source), and excellent thermal performance when properly insulated.
