rgerk
Structural
- Jun 22, 2005
- 47
I don't understand the thought process of splitting the seismic load effect "E" into two components (Eh and Ev). I have calculated the Eh and Ev components but am trying to grasp how to use them in the load combinations.
In my structure, I have assumed the Ev to be negative (uplift). No particular reason, just the way I chose to think about it. The Eh is also negative due to customer sign conventions. With all that said....
Section 12.4.2 states:
E = Eh + Ev in ASD load combinations 5 and 6
E = Eh - Ev in ASD load combination 8
In my case, looking at E = Eh + Ev. Do I add the two loads and then substitute the E into the load combination or should I use Eh and Ev in the load combination so that the result is additive? If I add the two loads, which direction is E applied.
Any help would be great.
Ryan
In my structure, I have assumed the Ev to be negative (uplift). No particular reason, just the way I chose to think about it. The Eh is also negative due to customer sign conventions. With all that said....
Section 12.4.2 states:
E = Eh + Ev in ASD load combinations 5 and 6
E = Eh - Ev in ASD load combination 8
In my case, looking at E = Eh + Ev. Do I add the two loads and then substitute the E into the load combination or should I use Eh and Ev in the load combination so that the result is additive? If I add the two loads, which direction is E applied.
Any help would be great.
Ryan