A detailed frame joint evaluation of the building shall be performed if any of the following apply:
- Significant structural damage is observed in one or more welded steel moment frame structures located within 1 km of the building on sites with similar, or more firm, soil properties;
- An earthquake having a magnitude of 6.5 or greater, where the structure is located within 5 km of the trace of a surface rupture or within the vertical projection of the rupture area when no surface rupture has occurred;
- Significant architectural or structural damage has been observed in the building following an earthquake; or
- Entry to the building has been limited by the building official because of earthquake damage, regardless of the type or nature of the damage.