Attic Trusses And Rafter Ties

Also the un tied rafters push on the wall plates which span between the tied rafter ends bringing in 2 3 of the load on the tie and adding to the bending in the tied rafters.

Attic trusses and rafter ties.

When it comes time to attach your roof be it trusses or rafters be sure to consider what best suits the needs of the structure you re building. Collar ties may take up space in the attic of your home but they are there for a reason. Firstly the tributory width d should be 3d as only every third rafter is tied. Simpson strong tie category roof truss and rafter connectors ties and straps for cold formed steel construction.

Some of these can support the roof and prevent ridge sagging and wall spreading. Toenailing is one of the more straightforward methods of attaching rafters or trusses to the top plate while hurricane ties offer superior strength to ensure your roof stays where it belongs. This article describes and illustrates the different types of support that prevents roof sagging and wall bulging at buildings including definitions of collar ties rafter ties and structural ridge beams. Collar ties rafter ties tension beams structural ridge beams.

The roof framing mock up below shows a standard rafter tie. Since l is the half width of the roof the load should be w not w 2 and there are other serious things wrong with this.