You have 3 structures which are not connected to each other in the same model. If you go to Tools > Check Multiple Structures, you will be able to see a list. Click on these one by one and each structure will be highlighted. It is not advisable to have multiple disjointed structures in the same model when you are doing a seismic load generation.
Coming to the wind load, I would suggest applying the loads to specific portions of your model instead of just applying it over the full structure due to a couple of reasons.
First of all, in the attached picture I have shown one region of your model, where closed panels are not formed due to absence of some vertical members. So for load case 5 ( wind in +X) that portion is not being loaded. To help with the wind load generation, I defined a few dummy members 2974 TO 2980 ( small area, assigned material called DUMMY of negligible E, zero density ) to close the panels.
Secondly for wind load in X ( load case 5), a panel between X=28.8m and X =32.76m is getting some wind load. This is due to the fact that Z coordinate for node 1178 is 23.19m whereas that for node 1188 is 23.2m which is making that bay not perfectly parallel to X-Y plane due to which some small wind loads are being created on the face even for wind in X.
To avoid problems like these I would suggest that you apply the wind loads to specific locations in your model. I defined a group ( called _PANEL1) consisting of all the panels that would resist the wind in + X ( LC 5 ) and applied the wind load on this group.
LOAD 5 LOADTYPE Wind TITLE WIND +VE X
*WIND LOAD X 1 TYPE 1
WIND LOAD X 1 TYPE 1 LIST _PANEL1
In the modified file which is attached, I have commented out all load cases after the case 5 as I only fixed the issue for the case 5. You can apply the same principle for the other wind loads ( cases 6 to 8 ) and this would eliminate the other fx fy fz wind load warnings.
(Please visit the site to view this file)
The warning due to UBC/IBC is a standard one and you can add a PERFROM ANALYSIS and CHANGE after every seismic case to get rid of that. More details on that is available at the following post
