Ev factor in seismic design. (1997 UBC)
Ev factor in seismic design. (1997 UBC)
(OP)
There has been a lot of discussion in our office about the Ev factor in earthquake design (1997 UBC). Is this factor a horizontal component due to vertical seismic load or is this a vertical load that should be added in a vertical (y direction) manner? Should this component be added horizontally or as some type of vertical impact load?






RE: Ev factor in seismic design. (1997 UBC)
RE: Ev factor in seismic design. (1997 UBC)
RE: Ev factor in seismic design. (1997 UBC)
RE: Ev factor in seismic design. (1997 UBC)
I hope the 2000 code has more insight into earthquake load E. I have seen engineers place Ev horizontally in combination with Eh and vertically with the DL. Thanks for comments again.
The most helpful reference I've found is the PCA publication "Design of Concrete Buildings for Earthquake and Wind Loads". Ghosh explained in a recent seminar, with this manual, that Ev is a vertical component that acts vertically with gravity loads.