Modelling of 25 storey building with the specified properties using ETABS

CHALLENGE-6

AIM- MODELLING A 25 STOREY BUILDING IN ETABS.

DATA-

• Beam Size= (300 X 400) mm.
• Column Size= (800 X 800) mm.
• Slab Thickness= 150 mm.
• Height of storey= 3m.
• Height of plinth= 1.5m.

STEPS-

STEP-1

• Open ETABS 2019.
• Go to file menu and select new model, a pop up window of model initialization will be opening.
• Select use built in settings.
• Select display units as Metric SI, Steel section data base as Indian, Steel design code as IS 800:2007, concrete design code as IS 456:2000.
• Select OK.

STEP-2

• A new window of new model quick templates will be appearing.
• Select the grids and customise grids.
• Set X grid data at spacing of 4m, and number of grids is 5.
• Set Y grid data at spacing of 4m, and number of grids is 4.
• Click OK

STEP-3

• Now select the option custom story data and select edit storey data.
• Select plinth height as 1.5m, and height of storey as 3m.
• Add storey and make total number of story as 25.
• Keep master storey 1 as yes.
• Click OK.

STEP-4

• Defining the properties of elements.
• Go to define and select material properties.
• Select grade of concrete as M30.
• Select steel as HYSD 500and HYSD 415 steel.

PROPERTY OF CONCRETE.

CONCRETE MATERIAL PROPERTY DATA-

PROPERTY OF STEEL-

STEP-5

• Defining beam column properties.
• Go to define tab, section properties and frame sections.

FRAME PROPERTY TAB.

BEAM DETAILS-

BEAM REINFORCEMENT DETAILS-

COLUMN PROPERTES-

COLUMN REINFORCEMENT DETAILS-

STEP-6

• Defining slab properties.
• Go to define tab, section properties and slab sections.

SLAB PROPERTY DATA

STEP-7

• Drawing of beams and columns.
• In the left side of the draw panel select the option quick draw column.
• Place columns on the grids
• For drawing of beams select the option quick draw beams in the draw panel and place the beams.

DRAWING OF BEAM AND COLUMN.

STEP-8

• Drawing of slab.
• In the left side of the draw panel select the option quick draw floor.
• Place slabs between the grids.

STEP-9

• Change the base connections.
• Go to the base view in the plan.
• Select the base view.
• Select assign tab, joints, restraints and select pinned connection.

JOIN ASSESSMENT DETAIL.

STEP-10

• Assigning loads on the structure.
• Select define, load patterns and enter the load patterns as shown in the image.

DEFINING LOAD PATTERNS

STEP-11

• Assigning live loads.
• Go to assign tab and select shell loads , uniform and assign load of 3KN/M^2.

STEP-12

• Assigning load on beam as brick wall load.
• Apply load of 10KN/M.

BRICK WALL LOAD PATTERN TYPE-

BRICK WALL LOAD APPLIED ON BEAMS-

STEP-13

• Assigning mass source to model.
• Go to define tab select mass source and enter the details as shown in the image.

MASS SOURCE DATA-

STEP-14

• Generating load combinations.
• Select define tab- load combinations- add default- concrete frame- convert to editable.

LOAD COMBINATION DATA-

STEP-15

• Assigning diaphragms to the model.
• Go to assign tab select shell, select diaphragms and select D1.
• Apply the diaphragms.

STEP-16

• Creating modal analysis.
• Go to define tab-modal cases- modify.
• Enter the data as shown in the image.

STEP- 17

• Checking the model.
• Go to the analyse tab and select option check model.

STEP-18

• Running the analysis.

AFTER RUNNING THE ANALYSIS-

STEP-19

• Modal results.
• Select display- show tables- structure output- modal information- modal participation mass ratios.
• A table will be appearing on the screen.