Projefct 1_Comparative study of different storey buildings for Seismic forces
Please find attached copy of answer sheet
Comparative study of different story buildings for Seismic force
Comparative-1
Building – AA
Modal 10 story Building
Ground to Plinth height = 1.5m
Story Floor to Floor = 3m
Total Story = 10
In X direction grid to grid distance = 4000mm (5Number Grid)
In Y direction grid to grid distance = 4000mm (4Number Grid)
Structural Element sizes
Beams size: 300mm x 400mm
Columns Size : 600mm x 600mm for bottom 5 story and 400mm x 400mm for above 5 story to 10th story
Slab : 150mm Thick
Material Properties:
Grade of concrete : M30
Grade of steel (Longitudinal bar ): Fe 500 and Grade of steel ( Confinement bar) : Fe 415
Loadings
Dead load on Beams From infill wall : 10KN/m
Live load on floor : 3KN/m2
Live load on roof slab : 1.5KN/m2
Building are to be assumed pinned at the base
Checked
The translational fundamental natural period vibration in both the x and y direction is as following
Tx1 = 0.71s
Ty1 = o.82s
Soil type – III
Procedure:
1) Open the ETABS software click on new Modal and select the units, data base, steel design code IS 800 and concrete design code IS 456.
2) In new model quick templates Click Custom grid spacing - Grid system data give grid spacing in X and Y direction 4000mm. In X direction 5nos of grid and Y direction 4nos of grid
3) Click quick start rectangular grid i,e Story data enter the story up to 10 and height 3m and plinth 1.5m. all story will be same as story1.
4) Define material properties -Add new material property – Indian – concrete and Grade M30 same way for steel property.
5) Define Section property for beam - size and grade and cover to be specify same way for columns and slab.
6) Define Load Patterns – dead load live load brick wall load and seismic load in Eqx + & - ve and Eqy + & - ve
7) Fixe the columns by clicking Quick draw column by selecting C400x400 at grid junction by clicking
8) Fixe the Beams by clicking Quick draw beam by selecting B300x400 from grid to grid clicking
9) Fixe the slab by clicking Quick draw floor/ wall by selecting Slab150 clicking center of four beams
10) Assign the Floor load – live load on slabs 3KN/m2 and roof slab 1.5KN/m2 separately
11) Assign the brick wall load 10KN/m on beams by selecting beams
12) Define the mass source
13) Define the Load Combination – Add default design combs
14) Define diaphragms
15) Analysis -Check Modal by selecting all – click OK
16) Run analysis
17) Display Show table
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Building – BB
Modal 10 story Building
Ground to Plinth height = 1.5m
Story Floor to Floor = 3m
Total Story = 10
In X direction grid to grid distance = 4000mm (5Number Grid)
In Y direction grid to grid distance = 4000mm (4Number Grid)
Structural Element sizes
Beams size: 300mm x 400mm
Columns Size : 600mm x 600mm for all story
Slab : 150mm Thick
Material Properties:
Grade of concrete : M30
Grade of steel (Longitudinal bar ): Fe 500 and Grade of steel ( Confinement bar) : Fe 415
Loadings
Dead load on Beams From infill wall : 10KN/m
Live load on floor : 3KN/m2
Live load on roof slab : 1.5KN/m2
Building are to be assumed pinned at the base
Checked
The translational fundamental natural period vibration in both the x and y direction is as following
Tx1 = 0.71s
Ty1 = o.82s
Soil type – III
15) Analysis -Check Modal by selecting all – click OK
16) Run analysis
17) Display Show table
********************************************************************************************************
Building – CC
Modal 10 story Building
Ground to Plinth height = 1.5m
Story Floor to Floor = 3m
Total Story = 10
In X direction grid to grid distance = 4000mm (5Number Grid)
In Y direction grid to grid distance = 4000mm (4Number Grid)
Structural Element sizes
Beams size: 300mm x 400mm
Columns Size : 800mm x 800mm for bottom for 10 story and 600mm x 600mm for above 10 story to 20th story and 400mm x 400mm for above 20 story to 25th story
Slab : 150mm Thick
Material Properties:
Grade of concrete : M30
Grade of steel (Longitudinal bar ): Fe 500 and Grade of steel ( Confinement bar) : Fe 415
Loadings
Dead load on Beams From infill wall : 10KN/m
Live load on floor : 3KN/m2
Live load on roof slab : 1.5KN/m2
Building are to be assumed pinned at the base
Checked
The translational fundamental natural period vibration in both the x and y direction is as following
Tx1 = 1.72s
Ty1 = 1.99s
Soil type – III
15) Analysis -Check Modal by selecting all – click OK
16) Run analysis
17) Display Show table
********************************************************************************************************
Building – DD
Modal 10 story Building
Ground to Plinth height = 1.5m
Story Floor to Floor = 3m
Total Story = 25
In X direction grid to grid distance = 4000mm (5Number Grid)
In Y direction grid to grid distance = 4000mm (4Number Grid)
Structural Element sizes
Beams size: 300mm x 400mm
Columns Size : 600mm x 600mm for all story
Slab : 150mm Thick
Material Properties:
Grade of concrete : M30
Grade of steel (Longitudinal bar ): Fe 500 and Grade of steel ( Confinement bar) : Fe 415
Loadings
Dead load on Beams From infill wall : 10KN/m
Live load on floor : 3KN/m2
Live load on roof slab : 1.5KN/m2
Building are to be assumed pinned at the base
Checked
The translational fundamental natural period vibration in both the x and y direction is as following
Tx1 = 1.72s
Ty1 = 1.99s
Soil type – III
15) Analysis -Check Modal by selecting all – click OK
16) Run analysis
17) Display Show table
**********************************************************************************************************************************************************************************************
Conclusion
Comparing all four type of building section of columns and Time period with respect to height of building
For building AA Time period sec ( different columns section – 10 story)
Modal 1 1.283
Modal 2 1.243
For building BB Time period sec ( same columns section – 10 story)
Modal 1 1.304
Modal 2 1.261
For building CC Time period sec ( different columns section – 25 story)
Modal 1 3.427
Modal 2 3.27
For building DD Time period sec ( same columns section – 25 story)
Modal 1 3.359
Modal 2 3.189
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Comparative-2
Building – CC
Modal 10 story Building
Ground to Plinth height = 1.5m
Story Floor to Floor = 3m
Total Story = 10
In X direction grid to grid distance = 4000mm (5Number Grid)
In Y direction grid to grid distance = 4000mm (4Number Grid)
Structural Element sizes
Beams size: 300mm x 400mm
Columns Size : 800mm x 800mm for bottom for 10 story and 600mm x 600mm for above 10 story to 20th story and 400mm x 400mm for above 20 story to 25th story
Slab : 150mm Thick
Material Properties:
Grade of concrete : M30
Grade of steel (Longitudinal bar ): Fe 500 and Grade of steel ( Confinement bar) : Fe 415
Loadings
Dead load on Beams From infill wall : 10KN/m
Live load on floor : 3KN/m2
Live load on roof slab : 1.5KN/m2
Building are to be assumed pinned at the base
Checked
The translational fundamental natural period vibration in both the x and y direction is as following
Tx1 = 1.72s
Ty1 = 1.99s
Soil type – III
15) Analysis -Check Modal by selecting all – click OK
16) Run analysis
17) Display Show table
********************************************************************************************************
Building – EE
Modal 10 story Building
Ground to Plinth height = 1.5m
Story Floor to Floor = 3m
Total Story = 10
In X direction grid to grid distance = 4000mm (5Number Grid)
In Y direction grid to grid distance = 4000mm (4Number Grid)
Structural Element sizes
Beams size: 300mm x 400mm
Columns Size : 800mm x 800mm for bottom for 10 story and 600mm x 600mm for above 10 story to 20th story and 400mm x 400mm for above 20 story to 25th story
Slab : 150mm Thick
Material Properties:
Grade of concrete : M30
Grade of steel (Longitudinal bar ): Fe 500 and Grade of steel ( Confinement bar) : Fe 415
Loadings
Dead load on Beams From infill wall : 10KN/m
Live load on floor : 3.3KN/m2
Live load on roof slab : 1.5KN/m2
Building are to be assumed pinned at the base
Checked
The translational fundamental natural period vibration in both the x and y direction is as following
Tx1 = 1.72s
Ty1 = 1.99s
Soil type – III
15) Analysis -Check Modal by selecting all – click OK
16) Run analysis
17) Display Show table
*******************************************************************************************************
Building – FF
Modal 10 story Building
Ground to Plinth height = 1.5m
Story Floor to Floor = 3m
Total Story = 10
In X direction grid to grid distance = 4000mm (5Number Grid)
In Y direction grid to grid distance = 4000mm (4Number Grid)
Structural Element sizes
Beams size: 300mm x 400mm
Columns Size : 800mm x 800mm for bottom for 10 story and 600mm x 600mm for above 10 story to 20th story and 400mm x 400mm for above 20 story to 25th story
Slab : 150mm Thick
Material Properties:
Grade of concrete : M30
Grade of steel (Longitudinal bar ): Fe 500 and Grade of steel ( Confinement bar) : Fe 415
Loadings
Dead load on Beams From infill wall : 10KN/m
Live load on floor : 3.6KN/m2
Live load on roof slab : 1.5KN/m2
Building are to be assumed pinned at the base
Checked
The translational fundamental natural period vibration in both the x and y direction is as following
Tx1 = 1.72s
Ty1 = 1.99s
Soil type – III
15) Analysis -Check Modal by selecting all – click OK
16) Run analysis
17) Display Show table
********************************************************************************************************
**********************************************************************************************************************************************************************************************
Conclusion
Comparing all four type of building section of columns and Time period with respect to height of building
For building CC Time period sec ( same columns section & Live Load = 3.0kKN/m2 2 story)
Modal 1 1.283
Modal 2 1.243
For building EE Time period sec ( same columns section & Live Load = 3.0kKN/m2 5 story)
Modal 1 3.501
Modal 2 3.348
For building FF Time period sec ( same columns section & Live Load = 3.0kKN/m2 10 story)
Modal 1 3.512
Modal 2 3.359
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Comparative-3
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Building – GG
Modal 2 story Building
Ground to Plinth height = 1.5m
Story Floor to Floor = 3m
Total Story = 2
In X direction grid to grid distance = 4000mm (5Number Grid)
In Y direction grid to grid distance = 4000mm (4Number Grid)
Structural Element sizes
Beams size: 300mm x 400mm
Columns Size : 400mm x 400mm
Slab : 150mm Thick
Material Properties:
Grade of concrete : M30
Grade of steel (Longitudinal bar ): Fe 500 and Grade of steel ( Confinement bar) : Fe 415
Loadings
Dead load on Beams From infill wall : 10KN/m
Live load on floor : 3.0KN/m2
Live load on roof slab : 1.5KN/m2
Building are to be assumed pinned at the base
Checked
The translational fundamental natural period vibration in both the x and y direction is as following
Tx1 = 0.17s
Ty1 = 0.2s
Soil type – III
15) Analysis -Check Modal by selecting all – click OK
16) Run analysis
17) Display Show table
********************************************************************************************************
Building – HH
Modal 5 story Building
Ground to Plinth height = 1.5m
Story Floor to Floor = 3m
Total Story = 5
In X direction grid to grid distance = 4000mm (5Number Grid)
In Y direction grid to grid distance = 4000mm (4Number Grid)
Structural Element sizes
Beams size: 300mm x 400mm
Columns Size : 400mm x 400mm
Slab : 150mm Thick
Material Properties:
Grade of concrete : M30
Grade of steel (Longitudinal bar ): Fe 500 and Grade of steel ( Confinement bar) : Fe 415
Loadings
Dead load on Beams From infill wall : 10KN/m
Live load on floor : 3.0KN/m2
Live load on roof slab : 1.5KN/m2
Building are to be assumed pinned at the base
Checked
The translational fundamental natural period vibration in both the x and y direction is as following
Tx1 = 0.37s
Ty1 = 0.43s
Soil type – III
15) Analysis -Check Modal by selecting all – click OK
16) Run analysis
17) Display Show table
********************************************************************************************************
Building – BB
Modal 10 story Building
Ground to Plinth height = 1.5m
Story Floor to Floor = 3m
Total Story = 10
In X direction grid to grid distance = 4000mm (5Number Grid)
In Y direction grid to grid distance = 4000mm (4Number Grid)
Structural Element sizes
Beams size: 300mm x 400mm
Columns Size : 600mm x 600mm for all story
Slab : 150mm Thick
Material Properties:
Grade of concrete : M30
Grade of steel (Longitudinal bar ): Fe 500 and Grade of steel ( Confinement bar) : Fe 415
Loadings
Dead load on Beams From infill wall : 10KN/m
Live load on floor : 3KN/m2
Live load on roof slab : 1.5KN/m2
Building are to be assumed pinned at the base
Checked
The translational fundamental natural period vibration in both the x and y direction is as following
Tx1 = 0.71s
Ty1 = o.82s
Soil type – III
15) Analysis -Check Modal by selecting all – click OK
16) Run analysis
17) Display Show table
********************************************************************************************************
Building – CC
Modal 10 story Building
Ground to Plinth height = 1.5m
Story Floor to Floor = 3m
Total Story = 10
In X direction grid to grid distance = 4000mm (5Number Grid)
In Y direction grid to grid distance = 4000mm (4Number Grid)
Structural Element sizes
Beams size: 300mm x 400mm
Columns Size : 800mm x 800mm for bottom for 10 story and 600mm x 600mm for above 10 story to 20th story and 400mm x 400mm for above 20 story to 25th story
Slab : 150mm Thick
Material Properties:
Grade of concrete : M30
Grade of steel (Longitudinal bar ): Fe 500 and Grade of steel ( Confinement bar) : Fe 415
Loadings
Dead load on Beams From infill wall : 10KN/m
Live load on floor : 3KN/m2
Live load on roof slab : 1.5KN/m2
Building are to be assumed pinned at the base
Checked
The translational fundamental natural period vibration in both the x and y direction is as following
Tx1 = 1.72s
Ty1 = 1.99s
Soil type – III
15) Analysis -Check Modal by selecting all – click OK
16) Run analysis
17) Display Show table
********************************************************************************************************
**********************************************************************************************************************************************************************************************
Conclusion
Comparing all four type of building section of columns and Time period with respect to height of building
For building GG Time period sec (columns section400x400 – 10 story)
Modal 1 0.353
Modal 2 0.345
For building HH Time period sec ( columns section 400x400– 10 story)
Modal 1 0.747
Modal 2 0.728
For building BB Time period sec ( columns section 600x600– 25 story)
Modal 1 1.304
Modal 2 1.261
For building CC Time period sec ( columns section 800x800– 25 story)
Modal 1 3.427
Modal 2 3.27
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Comparative-4
Building – HH
Modal 5 story Building
Ground to Plinth height = 1.5m
Story Floor to Floor = 3m
Total Story = 5
In X direction grid to grid distance = 4000mm (5Number Grid)
In Y direction grid to grid distance = 4000mm (4Number Grid)
Structural Element sizes
Beams size: 300mm x 400mm
Columns Size : 400mm x 400mm
Slab : 150mm Thick
Material Properties:
Grade of concrete : M30
Grade of steel (Longitudinal bar ): Fe 500 and Grade of steel ( Confinement bar) : Fe 415
Loadings
Dead load on Beams From infill wall : 10KN/m
Live load on floor : 3.0KN/m2
Live load on roof slab : 1.5KN/m2
Building are to be assumed pinned at the base
Checked
The translational fundamental natural period vibration in both the x and y direction is as following
Tx1 = 0.37s
Ty1 = 0.43s
Soil type – III
15) Analysis -Check Modal by selecting all – click OK
16) Run analysis
17) Display Show table
********************************************************************************************************
Building – JJ
Modal 5 story Building
Ground to Plinth height = 1.5m
Story Floor to Floor = 3m
Total Story = 5
In X direction grid to grid distance = 4000mm (5Number Grid)
In Y direction grid to grid distance = 4000mm (4Number Grid)
Structural Element sizes
Beams size: 300mm x 400mm
Columns Size : 300mm x 500mm
Slab : 150mm Thick
Material Properties:
Grade of concrete : M30
Grade of steel (Longitudinal bar ): Fe 500 and Grade of steel ( Confinement bar) : Fe 415
Loadings
Dead load on Beams From infill wall : 10KN/m
Live load on floor : 3.0KN/m2
Live load on roof slab : 1.5KN/m2
Building are to be assumed pinned at the base
Checked
The translational fundamental natural period vibration in both the x and y direction is as following
Tx1 = 0.37s
Ty1 = 0.43s
Soil type – III
15) Analysis -Check Modal by selecting all – click OK
16) Run analysis
17) Display Show table
******************************************************************************************************
Building – KK
Modal 5 story Building
Ground to Plinth height = 1.5m
Story Floor to Floor = 3m
Total Story = 5
In X direction grid to grid distance = 4000mm (5Number Grid)
In Y direction grid to grid distance = 4000mm (4Number Grid)
Structural Element sizes
Beams size: 300mm x 400mm
Columns Size : 300mm x 600mm
Slab : 150mm Thick
Material Properties:
Grade of concrete : M30
Grade of steel (Longitudinal bar ): Fe 500 and Grade of steel ( Confinement bar) : Fe 415
Loadings
Dead load on Beams From infill wall : 10KN/m
Live load on floor : 3.0KN/m2
Live load on roof slab : 1.5KN/m2
Building are to be assumed pinned at the base
Checked
The translational fundamental natural period vibration in both the x and y direction is as following
Tx1 = 0.37s
Ty1 = 0.43s
Soil type – III
15) Analysis -Check Modal by selecting all – click OK
16) Run analysis
17) Display Show table
*****************************************************************************************************
********************************************************************************************************
**********************************************************************************************************************************************************************************************
Conclusion
Comparing all four type of building section of columns and Time period with respect to height of building
For building HH Time period sec ( columns section 300x400– 5 story)
Modal 1 0.747
Modal 2 0.728
For building JJ Time period sec ( columns section 300x500– 5 story)
Modal 1 0.839
Modal 2 0.687
For building KK Time period sec (columns section300x600 – 5story)
Modal 1 0.815
Modal 2 0.655
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Please find attached copy of answer sheet