Modelling of 25 storey building with the specified properties using ETABS

ANS:-

• Open ETABS software.
• Click New model.
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• Give model initialization setting as follow
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• Click ok
• In the new model quick template dialog box , select custom grid spacing and click Edit grid data
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• Give the following settings in grid system data dialog box.
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• Click ok.
• Select custom story data under story dimension and click edit story data.
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• Give the story data for first- three story as follow having story 1 as master story.
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• Write click on the first column and select add story and click keep existing story heights.
• Give number of added story as 22.
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• Click ok
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• The following page opens
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• Click Define--> Material properties
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• Click Add new material for assigning concrete
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• Click Add new material for assigning Rebars
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• Click ok
• Click Define--> Section properties--> Frame sections.
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• Select Add new property in the dialog box.
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• Select the concrete shape as rectangular and give the following settings for the Beam
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• Beam property is added.
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• Again, click Add new property for creating property for column.
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• Column property is added.
• Click--> Section properties--> Slab section
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• Select Add new property and give the following settings.
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• Clickà Define--> Load pattern
• Define load patterns by its name
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• Click Define--> Mass source
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• Check load cases by click Define-->Load cases.
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• Create load combinations, Define--> Load combinations
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• Create Columns by Quick draw column.
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• Select quick draw beams.
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• Select the first horizontal and vertical beams and go to edit and select replicate.
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• Select first floor in plan view
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• Draw slab using quick slab by having similar stories in the status
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• Select all the beams from select tab
• Assign frame loads as distributed from assign tab.
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• Select the slabs
• Assign shell loads as uniform
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• Select the slabs from select tab and assign as diaphragm from assign tab.
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• Click run analysis in the panel after saving the file.
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Result:

• Click Display -->Story response plot. Change the display type to Maximum storey drift and desired combo to see the plots.
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