Let’s get into more detail on the advantages of trusses. Trusses are prefabricated in a factory and brought to the project site ready to install. The basic components that help roof trusses perform so well include two top chords, a bottom chord (or beam), and web pieces, along with metal connectors, or nail plates. And when it comes to post-frame builders, that number is even higher. In fact, about 3 out of 4 residential home builders today report using prefabricated roof trusses. Since then, they have become the most popular form of roof support, largely because they’re more cost-effective and structurally superior for most buildings. ![]() Modern roof trusses were invented in the 1950s. Trusses being installed for a post-frame building Trusses The individual components are typically measured, cut, and assembled on site. They’re made up of angled boards that connect the ceiling’s peak-sometimes called the ridge board-to the top of the exterior walls. For example, if your house was built before the 1960s, there’s a good chance it has rafters rather than trusses.įor smaller building projects, especially those that don’t require a wide span, rafters can still be a convenient option. Roof rafters like those shown above were more commonly used in home construction in the past. Roof rafters in a smaller structure ( Source ) Rafters Rafters and trusses are both:Īnd that’s pretty much where the similarities end. Rafters and Trusses 101įirst, let’s cover the basics. They’re also extremely economical, with a wide range of potential uses. Post-frame buildings typically have expansive, unobstructed interior spaces. ![]() These are made with highly engineered laminated wooden posts and prefabricated trusses, which help transfer wind and snow loads to the foundation. We’ll help you understand why roof trusses are by far the smarter choice for most construction projects, especially for post-frame buildings (commonly known as pole barns). Although both types of components are used to support the roof of a building, they’re different in fundamental ways. It can be easy to confuse rafters with trusses.
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