Floor Truss Ribbon Board Load Path

Recently a question was asked as to the need for intermediate blocking between wall bottom plate(s) and bearing walls in installations where walls are installed on top of bottom chord bearing floor trusses using a ribbon board.

Currently, the capacity of a ribbon board and its system through the composite of the ribbon board, floor sheathing and bottom plate of the wall has not been ascertained. In order to provide better guidance, a series of tests were conducted in order to determine the capacity of the ribbon board system.