Interior Load Bearing Wall Under W Truss Roof. You will need an engineer involved in this since many contractors will tell you anything to get the job. If there is a truss over the wall the wall is probably not load bearing since the truss bears the load.
Interior load-bearing wall under w-truss roof. Probably of more concern is that if the support point is not at a truss. Trusses unless a special girder truss which accepts the loads of attached trusses have no interior load bearing walls.
David Double 2x4 plates everywhere.
They also could have been engineered to have a load bearing wall. If you find that you dont have space for double plates on interior walls you may have some warpage of the bottom truss chords or high spots in the floor. The load starting with the roof and everything under the roof gets transferred down to the footings. But there are five possible exceptions to look out for.