A building with perimeter columns move in 4.5' from the edge of the building, is it to avoid removing the coulmns to satisfy the GSA progressive collapse guidelines? That is, if the perimeter columns are moved 4.5' or more inside the edge of the building there is no need to do the GSA...
I am using a structural design program and I was surprised to find out that the program generated load combinations
1. have load cases considering live load = 0. for example, if using UBC97 eq. 12-5, there are load combinatios 1.2D+1.0E
2. When using eq 12-6 in UBC97, have load combinations...