Modelling of 25 storey building with the specified properties using ETABS
open the ETABS software and input the following data
Use built in settings option to fill the data
after model initialization select custom grid setting and then input the grid data as follows
after this edit the story data. input 26 storys, 1 will be the plinth level at 1.5m and the story height will be 3m
as we can see, the grids and the storys have been created
after the grids we need to add material properties from the define tab
for adding concrete we need to add the following details after selecting Add new material option
from material/show property design data we will select light weight concrete option since it is high rise building
from define tab select section properties and then input the following beam data by giving name as beam 300x400
we will do the same for columns by giving name as column 800x800
after adding column properties, reinforcement data is added as follows
add slab data as follows
draw columns using quick draw column option
draw beams using quick draw command
draw floors using quick draw floors command
add joint support as pinned suppot
add load combinations as follows
modify lateral load as follows
do the same for all the earthquake loads
add live load as 3kn/m^2 as follows
add load cases of 10kn/m and 3kn/m^2 respectively
from define tab go to mass source
modify mass source and tick the required labels
add load patterns and assign to model
we will define load cominbinations
add default design combos and select concrete frame design combos
select all the floors and assign D1 diaphgram to it as follows
diaphgram has been applied
from the analyze tab, select the check model option
from the analyze tab, select run analysis option and then wait for the software to run the analysis and give results
as per clause 7.11.1.1 the inter storey drift should not be more than 0.004 but our value is 0.0020 which is within limits
result - the modelling is completed and the analysis is run successfully