Modelling of 25 storey building with the specified properties using ETABS

Model a 25 storey building on ETABS with structural properties as specified below. Ground floor or plinth floor level can be taken at a height of 1.5 metres from the base. Each of the successive 25 storeys has a storey height of 3 metres.

AIM THE model of a 25 storey building using etabs with structral properties as specifiedd below. ground floor or plinth flooor level can be taken at a height of 1.5meres from the base. each of the sussessive 25 storeys has a storey heighht of 3 metres

procedure

step 1 open the etabs software and create a new model

step 2

select the below settings

3. select and click ok

4) Edit the grid system data and create 25 story building frame .

5)select the materials of concrete and rebars .

6. select thebeam and column property

7.select the slab section

8. define load patterns

10)select the load combination and click it ok

now add coloumns and beams to the grid and replicate it as per grid .

and add selct to the beams

step11 next slab select and grid in to floors and select slab s150 and selct it ok

step12

select the load cases and add the value to the dead load and live of the building and to make it a structure

step13
table of modal and frequency.

step 14 Table of mass participation ratio

step15 Story respose plot EQX

step16 storey response towards eqy

output

Fundamental translation natural period -x direction - 4.4 sec 3.459
y direction- 4.2 sec 3.234
Torosional irregularity torosional mode time period should
be less then x and y - yes
Vertical irregulariety - First 3 modes contribute 65% mass
participation factor -yes
fundamental Lateral natural periods in two
principle plane direction are away from each - no

other by atleast 10%

inter story drift 1893 -2016 -yes

clause- 7.11.11