If you check the correlation tables for Hurricane designation vs. approximate related wind speed on ASCE 7 2005 and 2010 you will find that both present basically the same set of range values per category despite of both standards be based on different level of loads, i.e. Service level and...
What dead weight or which walls do you account for the base shear in a masonry enclosure.(eg for a cooling tower) that basically is four walls 12ft height +/- and no roof at all?