Story Drift for SMRF

[CWEngineer]

Hi,

I am working on a design of a four story SMRF, and trying to select the columns by checking the story drifts. Please see attached plan and profile for column orientation and process for story drift calculations. The columns are fixed throughout. I started with W14 columns and now I am at W33 columns, and the story drift still does not work. As shown on the attached excel file the story drift is greater in the x direction than the y direction. Will attach the excel file and SAP file separately.

I would really appreciate it if you guys can provide me some guidance on what I might be doing wrong.

Thanks

 

[CWEngineer]

Attached is the excel file showing the results from SAP (EQx and EQy for ELF) and Story Drift Calculations.

 

[CWEngineer]

Attached is the SAP2000 file.

Really appreciate your help.

 

[wannabeSE]

Why is ρ = 1.3? There are two bays of frames on each exterior wall. Be very cautious using 0.0025hsx. I recently received RFI where the curtain wall vendor wanted to change the width of the glass to meet a 0.0020hsx drift, luckily, the actual drift was closer to 0.015hsx. Have you tried the heaviest W14s possible. (Some architects will through tantrums if you mention W24 or W33 columns). Verify your base shear. I have seen people accidently double the self-weight mass in ETABS. Something looks fishy; I would expect the drift to be similar in both directions. Have you looked all of the column reactions to see if they are reasonable?