Permanent bracing of metal-plate-connected trusses is required to stabilize specific members of each truss throughout the life of the roof structure.
Temporary bracing is used to position and stabilize trusses until permanent bracing or other building components can be installed.
If carefully designed, some elements of temporary bracing  can serve dual roles and become permanent bracing also.
The building designer is responsible for permanent bracing design of MPG wood trusses .
Currently, the 2 percent Rule is the most common and accepted design practice used for designing permanent bracing for a compression web that utilizes one CLB with diagonals spaced at some interval.
For permanent bracing design purposes, a simple "hand calculation" method was desired to approximate the brace force required to stabilize numerous compression webs braced by one or two CLBs or chords braced by CLBs at multiple locations.
From a permanent bracing designer standpoint, one needs to determine the maximum axial force in all the panels of the chord.
A conservative assumption for permanent bracing design is to assume all panels have the same axial load equal to the maximum value of the center panel as determined from Equation .
For permanent bracing design, it is therefore conservative to assume [l.