Can you emerge two or more staad files into form one structure? If so will it renumber the joints and beams and retain the loadings on each member. I have additonal questions if this can be done.
FYI this was a E-Mail from NOAA
NOAA states that the presuure drop within a tornado is likly only 6-10% of atmospheric pressure. Modeling studies by Lewellan at the University of West Virginia show this and our own measurement from one third of the way across a violent (F4-F5) tornado vortex...
What would be the differential pressure on a tight structure when a tornado pass nearby. Internal pressure of the building did not have time to equalize with the external pressure, thus causing an outward pressure or a failure (explosion) of the weakest area of the building and then equalizing...
