I Beam Roof Framing

They are ideal for long spans including continuous spans over intermediate supports.

I beam roof framing.

I joists are used extensively in residential floor and roof framing. Sample maximum roof beam span table feet inches. 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 load from the top half of the roof is carried by the bearing wall or structural ridge.

For example if the slope is 4 in 12 and the run is 12 feet the ridge beam height m will be 4 feet. 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. The bottom half is carried by the exterior bearing walls. There are two common ways of framing the roof of a house.

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. 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. 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.

The table below shows built up beams for 31 3 psf of snow loading.