Roof Truss Plan Checklist

Truss Calculations

• Design loads per code, including drift, and match building plans

• CSI < 1.0 for top chord and bottom chord

• Uplift/suction addressed

• Plate calculations or Material Approval number shown

• Lumber species and grade for all members

Drawing of Trusses

• Plans show indication of review by building designer (or indication of review in signed cover letter)

• If building is over 50,000 cu ft, the plans are signed and sealed

• Matches calculations

• Geometry

• Span & spacing

• Pitch

• Web configuration

• Chord configuration

• Number of girder truss plies in calculations match plans

• Required bottom chord bracing shown 

• Calculated plate area match that shown on the plans

• Lumber species and grade

Framing Plan if Different Trusses are Used

• Building or Truss Plan Coordination

• Truss length matches building width

• Bearing points match building design

• Bearing area matches wall top plate width

• Loads from girder trusses carried down properly

• Required top chord bracing shown on the building plans

• Allowable diaphragm stress reductions applied for top chord members other than Douglas Fir Larch or Southern Pine