https://communities.bentley.com/products/ram-staad/f/ram-staad-forum/103469/superposition-of-two-models-in-staad-proDear All, I am new member of the forum and am looking for some answers in regards to one of my Staad Pro models. Greatly appreciate some information from you all experienced engineers. Can we super-postion two models in Staad Pro? I have 1en-USTelligent Community 12https://communities.bentley.com/thread/309455?ContentTypeID=1Mon, 22 Dec 2014 07:56:35 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:7995d227-75ea-4bbe-b899-737fe83804e1David ChackoThanks Kris. I understood the concept you are talking about.<br /> Will have to model it and see how its working. Thanks again.<div style="clear:both;"></div>https://communities.bentley.com/thread/309449?ContentTypeID=1Mon, 22 Dec 2014 07:17:21 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:02622060-6468-4f62-8f02-01b56c2015e9Kris SathiaIt should be possible to do that with the INACTIVE MEMBER command.<br /> <br /> First, define the entire model (which you are referring to as model-2). Next, use the INACTIVE MEMBER command to switch off portions that are part of model2 but not model1. Also, specify the supports corresponding to model 1.<br /> <br /> This will be followed by the load cases meant for model 1. Then a PERFORM ANALYSIS command followed by CHANGE.<br /> <br /> The CHANGE command tells STAAD to re-activate all the members that were inactivated earlier. We now have the full model-2. Next, specify the supports and load cases meant for model 2. Then a PERFORM ANALYSIS command followed by CHANGE.<br /> <br /> Specify the combination cases using the LOAD COMBINATION syntax. Once again, provide a PERFORM ANALYSIS command followed by CHANGE.<div style="clear:both;"></div>