June 30, 2004

1. Building damage is now categorized using the FEMA-356 acceptance criteria.  Thus the performance of the structural model is categorized as Immediately Occupancy (IO), Life-Safe (LS), Collapse Prevented (CP), or Collapsed (CO), based on the extent of plastic yielding at the ends of beams and columns and in the panel-zones and also on the story drift ratios.

2. User guide error: