It appears to me that heavy vehicle garage demands in IBC 2012/2015 are substantially higher than IBC 2009.
Beginning with IBC 2012, section 1607.7.3 Heavy Vehicle Garages references "the jurisdiction having authority", which is typically AASHTO with local amendments. IBC 2009 had Table 1607.6...
I am having problems getting more than 90% modal mass participation in my response spectrum analysis.
The structure consists of 2 framed levels below grade, a large 3 story podium above grade, and then three towers extending up from the podium for a total of 21 stories (including basement)...
I am trying to track story shear for individual frames for a steel braced frame system. I tried using pier labels, but ETABS only allows labels to be assigned to vertical frame members or area elements (works great for moment frames and concrete shear walls). The only other option I see is to...
