Personal Blog

Short studies built on real ETABS models. Each post asks one question and answers it with analysis results.

Infographic comparing a secondary beam with fixed and released ends

RC Frame DesignMay 30, 2023· 4 min read

Study on the essence of providing end release to a secondary beam

Two identical secondary beams under the same 5 kN/m load, one fixed and one released at the primary beam. What happens to torsion in the main beam, and to the steel each beam needs?

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Deformed shape of a G+15 building in its first mode

Dynamic AnalysisMay 29, 2023· 7 min read

Identification of critical mode shape for analysis of a G+15 storied building

33 mode shapes, a semi-rigid diaphragm and a plan with eight re-entrant corners. Which individual modes match the full response spectrum result, and how closely?

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