Design of a Multi Storied Building Using ETABS CSI

 • Number of Storey: G+4 including stair cover 

 • Building Type: Residential Building 

 • Building Height: 20.5m {(4 × 4) + (4.5 × 1)}

 • Column → 400 × 400mm 

                       450 × 450mm

                       500 × 500mm 

 •  Beam  →    350 × 400 mm 

                       300 × 350 mm    

                       400 × 450 mm 

 • Slab Thickness: 150 mm

 • Staircase Thickness: 175 mm 

 • Wall Thickness: 250 mm

 • Load → Dead Load – 2 Kn/m2 Live Load – 5 Kn/m2

                                                 STEPS

STEP 1: Open ETABS→ Select New Model

 

STEP 2: Select → User setting from a modal file→ Already set data for Built in Setting with INTRO.

 

STEP 3: Spacing Of Grids in X direction-7m and in Y direction=7m.

 

 

STEP 4: Right click anywhere between the grids. A popup will appear select add or modify grids.

 

STEP 5: Select modify/show storey data.

 

We can alter the height and storey data here. We will also be able to change the number of storeys and other data.

 

 

STEP 6: Now, go to DEFINE select material properties.

 

STEP 7: Then go to ADDNEW MATERIAL. Add concrete and rebar using the standard is code. Here specify the data for the required concrete.

 

 

STEP 8: Similarly, you can insert your rebar data as per IS CODE.

 

 

 

 

 

Now, the material selection has been completed.

 

STEP 9: Now go to DEFINE→ select SECTION PROPERTIES → select CONCRETE RECTANGULAR SECTION.

STEP 10: Now specify the concrete details required for your column.

 

STEP 11: Similarly specify the data as per IS CODE → go to modify/show modifier.

 

STEP 12: Now, go to show modifier and specify data as per IS CODE

 

 

STEP 13: Now, change other data here as per IS CODE.

 

STEP 14: On this popup, we are specifying a beam. So, we select beam from this table and fill the rest of data as shown.

 

 

 

STEP 15: Similarly, here we fill the data as per the IS CODE recommendations for beam.

 

STEP 16: Now go to DEFINE→ select SECTION PROPERTIES → select Wall Sections.

 

Define the wall data as per requirements.

 

STEP 17: Now go to DEFINE→ select SECTION PROPERTIES → select Wall Sections and define staircase details.

 

Now, all the details and materials has been specified along with beams, columns, slabs and stairs. So, now one can start placing beams and columns on the grids.

STEP 18: Now, click on the shortcut button for QUICK DRAW COLUMNS and drag and draw the columns.

 

 

STEP 19: Then similarly, select the shortcut for QUICKDRAW BEAMS and drag and draw the beam on the plan grid.

 

 

STEP 20: Follow the same procedure for all storeys.

 

STEP 21: Add slabs to the building using the shortcut buttons for quickdraw slab.

STEP 22: Draw walls to the building using the quick draw walls button from the left shortcut menu.

STEP 23: Put openings on either side of the plan for staircases. 

STEP 24: Now go to draw → select draw joint objects and define joint objects.

 

After the opening is provided, the plan will look like this:

 

 

STEP 25: Select the desired area for staircase and select → SHOW SELECTED OBJECTS ONLY.

 

STEP 26: Then go to DRAW select → DRAW USING SNAP. 

 

STEP 27: Then draw a beam at the midpoint of column for landing.

 

STEP 28: Draw slabs at the landing spots. 

 

STEP 29: Then draw stairs using tools from the left shortcut menu.

 

 

After the staircase is completed, the building looks like this:

 

 STEP 30: Now go to Assign → Shell Loads → Uniform→ Dead=2 → Live =5 → Click Ok.

 

STEP 31: Now click on Analyse /F5 to run Analysis→ Run Analysis→ Save File→ Output Result Shown.

 

STEP 32: Click on Display Frame→ For showing BM, SF and Stress Diagrams. Select Moment 33→Show Values→ Click Apply→ Shows the Bending Moment Diagram.

 

 

STEP 33: Click on Display Shell Stresses→ Select M22→Click on Apply→ It Shows the stress.

 

STEP 34: Click Display Shell Stresses→ Select M Max→ Click on Apply→ OK → It shows the Maximum Bending Moment.