To enable the roof truss to deflect under loads nails to the truss must be installed at the top of the slotted holes and not hammered home to allow a loose fit only.
Truss roof no load bearing walls.
Trusses unless a special girder truss which accepts the loads of attached trusses have no interior load bearing walls.
For example a gable end truss may be designed with support members that transmit the roof weight load outward to the side walls allowing the end wall directly below it to have breaks or openings in it that would otherwise be impossible.
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.
Engineered roof truss systems may be designed to eliminate the need for load bearing walls or change where the bearing walls are located.
That is the beauty of trusses.
Technically the interior partition walls shouldn t even be touching the truss bottom cord during rough in but they usually are.
Internal wall brackets are used to connect internal non loadbearing walls to roof trusses at maximum 1800mm centres.