Truss Roof No Load Bearing Walls

The roof trusses are too long to span the whole house so the load bearing wall runs down the center of the house to support the trusses at the perpendicular intersection in the middle.

Truss roof no load bearing walls.

Engineered roof truss systems may be designed to eliminate the need for load bearing walls or change where the bearing walls are located. With your trusses spanning the exterior walls for the full run of the house no interior walls will be load bearing the splices on trusses are engineered to be self supportive according to the plate sizing the fact that they land over an interior wall has nothing to do with that wall being load bearing trusses are engineered to span exterior wall to exterior wall self supporting. Technically the interior partition walls shouldn t even be touching the truss bottom cord during rough in but they usually are. To prevent these problems the gap between the truss and the non bearing wall should be enough so that it does not close when the load is applied to the truss.

That is the beauty of trusses. So you could have a minor gap with no load at the end of construction but during snow load you could have a truss failure. Trusses unless a special girder truss which accepts the loads of attached trusses have no interior load bearing walls.