How can I apply seismic load at my reference plane center of mass? 1

[donnabean]

Hi all,

I treat my mezz. floor level as reference plan and assigned a rigid diaphragm, then I want to apply my seismic load of mezz floor at its center of mass, but ETABS would not allow me to do it since ETABS assumed mezz is a reference floor, I guess. Any solution for this issue? Thanks in advance.

 

[johnbridge231]

You can disable the option "Lump mass at story levels" in the Define->Mass Source command.

Analysis and Design of arbitrary cross sections
Reinforcement design to all major codes
Moment Curvature analysis

http://www.engissol.com/cross-section-analysis-design.html

 

[donnabean]

Thanks. it works.