Truss
Definition and meaning of Truss in real estate.
A truss is a prefabricated structural framework composed of timber or steel members arranged in a series of triangles to support a roof, bridge, or other heavy load. The triangular design distributes weight efficiently over wide spans, reducing the need for interior load-bearing walls.
In more detail
Trusses are manufactured in a controlled factory setting and then delivered to the construction site, which allows for faster assembly and lower labor costs compared to traditional hand-framed rafters. Because roof trusses are engineered to bear loads on the outer walls of a structure, they give architects the flexibility to design open-concept floor plans with large, uninterrupted living spaces.
Home inspectors pay close attention to the condition of trusses, as any unauthorized alterations, such as cutting or drilling through the wood members, can compromise the entire roof structure. Homeowners must avoid cutting truss cords when installing attic storage or access doors unless they consult a structural engineer.
Key facts
| Category | Property Types & Construction |
|---|---|
| Structural Shape | Triangular configuration for weight distribution |
| Advantage | Allows for wide spans and open floor plans |
| Warning | Cutting or modifying trusses can cause structural failure |
A builder uses prefabricated wooden roof trusses to frame a new house in just one day, allowing them to quickly dry-in the structure and protect it from weather.
Frequently asked questions
Can I cut a roof truss to create attic storage space?
No, you should never cut or alter a truss without a structural engineer's approval, as doing so destroys its load-bearing capacity and can lead to roof collapse.
How does a truss differ from a rafter?
Trusses are engineered, prefabricated triangular units built in factories, while rafters are traditional boards cut and built by hand on the construction site.