I Beam Roof Framing

I joists are used extensively in residential floor and roof framing.

I beam roof framing.

Typically the roof beam is made by nailing together a few pieces of dimensional lumber. Sample maximum roof beam span table feet inches. With premanufactured trusses or with rafters and ceiling joists commonly called stick framing. Instead a wood i joist roof system is framed with either a central bearing wall or a structural ridge a beam that carries the roof load to posts.

There are two common ways of framing the roof of a house. Once again you will need to look at your local charts and use your local snow load factor to determine the maximum span for a given wood rafter size. The bottom half is carried by the exterior bearing walls. Corbett grace their parents and even their kids are learning a lot about the many ways a few right many wrong to build a high performance home.

While truss roofs are the most popular construction style today by some estimates truss roofs outnumber stick frame roofs two to one there are regions of the country where builders. Because i joists are straight and true it s easier for builders to avoid crowning and maintain a level framing surface. If you know the slope x in 12 you want to use for your roof framing design you can use it along with the run r to determine the height of the ridge beam. The table below shows built up beams for 31 3 psf of snow loading.

Determining the ridge beam height.