Causes of axial shortening :- In tall buildings, columns carry huge loads which effectively compress the column along its axis. This is commonly known as ‘axial shortening’. The axial column displacements generate significant forces within the structural elements they support, and can also cause failure of surrounding non-structural elements.…
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What is the usefulness of modal analysis?
Mode shapes tell us how the structure tends to deform at the specific natural frequencies. Mode shapes tell us which regions would experience high stresses if the deformed shape is similar to the mode shape. This is useful because we generally do not want the weld regions to be the…
How to Interpret Column Interaction Diagram?
Interaction Diagram in a column is a graph which shows a plot for the axial load Pn that a column could carry versus its moment capacity, Mn. This diagram is very useful in analyzing the strength of column which varies according to its loads and moments. This can easily be…
Why Modal Analysis Is Important for Designing of High-rise Structures?
Modal analysis is linear dynamic analysis method which provides the greatest contribution to structural response and behavior of structure after hitting earthquake. According to IS 1893-2016 CLOUSE NO.7.7.5.2 and table no. 6 the first two-mode of vibration is always translation mode unless and until building shape is very irregular. The…
How to Do Errorless Modeling in E-tabs?
HOW TO DO ERRORLESS MODELING IN ETABS? Many structural engineers have faced errors in modeling. It is a common problem that comes while modeling very complex modeling like the model with a different floor plan. 1. WHY ERRORS IS OCCURS? ETABS is sensitive software. if the beams or columns…