Earthquake Load Patterns in ETABS

[minx_kutor]

I have an ETABS model for a building with 6 levels. The building has different eccentricity ratios for each floor hence I have defined 6 different Earthquake load patterns (each of them for one floor) in both directions. In the load case tab I combine them to form one load case in each direction. However, this idea works in Y direction, in X direction I dont see any forces or displacements. Please can someone help me out.

 

[slickdeals]

You don't need to have six different load cases. You have the ability to override diaphragm eccentricities for each level. The value of eccentricity is input as a value in feet, which is based on the actual eccentricity.

 

[minx_kutor]

The floor plates I have is not a regular shape so to measure and input eccentricities will take a long time and its difficult to be accurate. Hence.