Hi, i have modelled a building that suffered severe torsional damage under effects of recent earthquakes. The model only consists shell elements so i am using section cuts (with grouping) for checking the torsional moments. But something is unclear for me. For getting a good measure from (let's say it consist 2 blocks sideways) a column should i group all of the joints or only one joint ? i selected all the joints but after reinforcing the building model, torsional MODAL shape calculated at third modal shape but torsional moments decreased only a little for example 13 kNm to 10 kNm. So i thought i am looking to wrong results because building is no longer twists but torsional moments are almost same. What should i do ? By the way i am looking torsional moments caused by SERVICE LOADS + EARTHQUAKE(response spectrum) combination.
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