Attic Trusses And Rafter Ties

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.

Attic trusses and rafter ties.

Some of these can support the roof and prevent ridge sagging and wall spreading. In many situations you ll find that ceiling joists installed parallel to the rafters are intended to function as rafter ties. 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. 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.

A rafter tie is a tension tie in the lower third of opposing gable rafters that is intended to resist the outward thrust of the rafter under a load. Collar ties may take up space in the attic of your home but they are there for a reason. 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. Firstly the tributory width d should be 3d as only every third rafter is tied.

Collar ties rafter ties tension beams structural ridge beams. Simpson strong tie category roof truss and rafter connectors ties and straps for cold formed steel construction.