Structural Modelling using Etabs 2018

Aim: To model and analyze the G+7 storey building using ETABS with application of proper load cases and load combinations for the given typical floor plan drawing

Step 1:

• Set the Grid and storey details
• Provide 4 & 6 grids at x & y with the proper spacing
• Click OK

Step 2:

• Plan of the G+7 building has obtained from the grids

Step 3:

• Click Define tab and select the materials
• Choose the material type such as concrete for M30
• Click OK

Step 4:

• Similarly for Steel material, click define tab
• Select Add new material option and choose the type as Rebar
• Choose the grade as HYSD grade 500
• Click OK

Step 5:

• In order to define the beam properties, select the define tab
• Select frame section property
• Provide the beam dimensions as 250 x 500
• Then modify the rebar details
• Click OK

Step 6:

• Similarly, the column properties follow the same process which we did in beam properties
• Provide the column dimensions as 400 x 400
• Click OK

Step 7:

• Frame the slab property using define tab
• Provide the thickness of the frame as 125mm
• Click OK

Step 8:

• After providing the property details of the beam, the column now we need to set the wall property
• Set the thickness of the wall as 250mm.
• Click OK

Step 9:

• By using the Quick draw column/beam option place the components in the floor plan
• Make sure that while drawing the beam and column we need to select the storey selection as All storey.

Step 10:

• Change the column orientation and size as per the Autocad file

Step 11:

Step 12:

• Similarly we need to add column and walls in required places

Step 13:

• Click to add Load Patterns

Step 14:

• Apply the brick wall load in all the beam component

Step 14:

• Application of live load
• Live load = 2kn/sq.m ( As per table 1 from IS 875 Part 2)
• Similarly the reduction factor has been taken from clause 3.2.1 in IS 875 part 2

Step 15:

• Apply the live load in slabs

Step 19:

• Mass source
• As per table 10 the mass source of live load upto 3 kn/sq.m is 25
• Therefore we can add mass source of live load as 0.25

Step 20:

• Response spectrum as per IS 1893 - 2016

Step 21:

• Load cases

Step 22:

Load combination

• Select the load design as Concrete frame and shear design
• Then select the load combination Dcons39

Step 23:

• Base reaction

Step 24:

• Maximum story drifts

• Therefore analysis has been done successfully

Result: Design and Analysis of G+7 building is done successfully