Project 2_Design & Analysis of a Hostel building at Guwahati, Assam

AIM:-

The structural model needs to be created and analysed using the specified building in ETABS 2018 in line with IS 1893 and IS 13920. To create the ground floor frame plan and beam detailing, as well as the pile cap and pile reinforcement details, tie beam linking the pile caps, and column reinforcement sketches.

INTRODUCTIONS:-

1. The programme used to produce a structural model of a given structure is called Etabs.
2. First, take note of the grid spacing values from the included structural designs.
3. Next Run the Structural Model after creating it.
4. Analyse the outcome and write down the ETABS result values.
5. The model is then sent to SAFE 2016 software to design the foundations.

Procedure:

1. Open the etabs software, then select File > New Model from the menu.
2. A window for initialising the model will emerge.
3. Select the Indian codes by clicking the utilize built-in setting, then click "OK."
4. Select the custom grid data, then select OK.
5. As soon as the values specified in the plans are inserted, our model will be complete.
6. The next stage is to define the substance. Go to define, select material properties, and then specify the concrete and rebar materials.
7. Properties need to be defined in the subsequent step section. Add the beam and column specification by going to define and selecting section characteristics.

8. For each beam, a 450 mm x 600 mm beam size is offered.

9. For the beams at the periphery, 450 mm x 600 mm beams are provided to strengthen the building's torsional resistance.

10. Reduce the moment of inertia of the columns and beams by 0.4% and 0.35 percent, respectively.

11. Define the slab properties by entering the define and slab sections in the following step.

12. Substitute the slab property as The slab for the Staircase should be defined as One Way.

13. Describe the staircase slab and specify that it is 175 mm thick (ranges from 175-225 mm).

14. Using the beam command, draw every beam.

15. Use the column command to draw every column.

16. The slabs command is used to draw slabs in the subsequent phase.

17. We now need to decide where the shear walls will be placed and how long they should be.

18. According to Indian norms, the wall's length should be 5-2% in each direction.

19. It is believed that the shear wall is 250 mm thick.

20. Go ahead and define the loads now.

21. The loads are then added after choosing the beams and floors.

22. AAC load of 3.5 kN/m due to the utilization of aac blocks.

23. The live load values for residential buildings are taken from IS 1875 Part 2.

25. Living Rooms,Bedrooms and dormitories	2 kN/m^2
    Kitchen and Laundries	3 kN/m^2
    Billiards and public lounges	3 kN/m^2
    Store rooms	5 kN/m^2
    Dining rooms,cafeterias and restaurant	4 kN/m^2
    Office rooms	2.5 kN/m^2
    Bath and toilets	2 kN/m^2
    Corridors, passages, staircase	3 kN/m^2
    Balconies	4 kN/m^2

26. Part 2 reduction factor should be applied to the imposed loads in accordance with clause number 875.
    It is necessary to lower the live load at the roof floor, hence 2 kN/m is used.
    On each floor, 2 kN/m of floor finish is applied.
    According to IS 1893 Table No. 8, seismic loads should be defined with an importance factor of 1.2 considering the building.
    Time is determined in accordance with IS 1893 clause 7.6.2, T=0.09h/sqrt.

    Tx = (0.09 * 16.85) / (67.7) 0.5 = 0.184 seconds. Alternatively, Ty=0.09*16.85/(13.3)0.5 =0.415 sec

27. Identify the load combinations now.

28. The next step is to define the mass source. To do this, go to define, click on mass source, add a new one, select specified load data, select include lateral mass and lump lateral mass at story levels from the mass options, and then add multipliers of 0.25 for LL and 1 for all dead and super dead loads to the load pattern.

29. Additionally, choose every floor, then use D1's diaphragm.

30. The following step is to define the modal cases. To do this, go to define and select modal cases. to add new model cases, click.

31. The needed number of modes should be entered after choosing eigen.

32. To add a new function in accordance with IS 1893-2016, go to define a function, click on response spectrum, and then double-check all the settings. Press "OK."

33. Identify the function as the IS function and the response spectrum. There will be an IS function IS 1893-2016 tab. Verify all the values. soil type, significance factor, and seismic zone factor select linear x and linear y, then select okay.

34. now navigate to define Load cases, select Add a new case, and then add RSX and Rsy.

35. choose the response range select the function as IS function, U1 for Rx, U2 for Rsy, and click Add

36. go to definition Click on load combinations, choose the default design combo, select the frame design to be converted to a design combo, and then click "OK."
37. Check the model once more, make any necessary corrections, and then run it.
38. Observations and conclusions

Importing the Safe 2016 software

1. Select the safe v12.fk under export in the file menu.
2. Once a tab has shown, select the narrative as the base, then click on the loads and loads from above, then click on the combination, then click OK.
3. Next, go to SAFE 2016 and select the file, then click Import, then save the file as FDB.
4. Visit Display and click the show to load When you choose love or the dead above, the values will emerge.

5. Given data:-

   Column of size:- 450mm *600 mm & 600mm*450m m

   pile has a load carrying capacity of 280kN

   Pile length-16 m and dia of pile -500 mm

   SBC-150kN/m^2

6. 1. Number of piles=Total Axial load/pile capacity=(1.5DL+1.5LL)/280= numbers
   2. Piles in the springs are defined as spring so for that the spring constant

   K=EA/L

   E=5000(fck)^0.5=5000(25)^0.5=25000 N/mm^2

   Area of pile =22/7*d^2=3.142*(500)^2/4=196375m^2

   L-10000m

   K=25000*0.7855/16=306835.9N/mm==419.

   3. Spacing of the piles as per clause number 6.6.2 of IS 2911 the spacing between the piles =2.5dia of the piles =2.5*500=1250mm
7. Now, in the following stage, we must define the material properties for concrete and reinforcement properties Fe500 & Fe415 in order to proceed.
8. Choose the values.
9. specify the pile caps, the pile diameter, and the column under specify section attributes.
10. Add a new, defined pile cap using 500 as a Mat and a Stiff Column.
11. When you select "Quick Draw Around the Plots," a new window will open where you can add the columns' sizes and places.
12. A stiff substance should be used to describe columns.

13. The following stage requires drawing pile caps; to do this, use the Quick Draw Slab command to select the pile caps and add them. Pile cap and piles should both be referred to as stiff materials.

14. Changed the rebar's material to Fe 500 after selecting the pile caps.

15. Next, select Draw and Draw Point. A window will appear; mark the locations of the piles there.

16. Select the quick dfaw again, this time around the pints, and then choose the property circular slab add piles dia in this instance 0.5m and add to the points.

17. Pick out these heaps and look again for the rebar components.

18. Currently, we must define each pile as a spring pile. To do this, go to define choose soil spring properties add new property, click on compression only, and then enter the K=EA?L calculation value.
19. Select all of the piles, then select Assign, Support Data, Spring Properties, and Assign.
20. Enter define, choose the define beam, and define the tie beams whose thickness should be equal to the thickness of the pile caps.
21. Check the design preferences to see if the rebar material is Fe 500.
22. Go to define and define the sls and uls load combinations.
23. visit the design and design preferences page.
24. Run the Analysis after saving the model.
25. Shapes with deformations demonstrated how minimal they are.
26. Add the design strips to the task
27. Conduct the analysis.
28. Shape deformation: all values are less than 25 mm; this is acceptable.
29. Now select "display" and then "punching shear"; the values we have are less than 1, thus everything is fine.
30. Now select slab design under show.
31. Every aspect of the strengthening will be disclosed.
32. For X DIRECTION MIDDLE STRIP

33. maximum Reinforcement was

    For Top:- 29834 mm^2/m=29834/3.3=9041 mm^2=28 nos. 20 mm dia are provided

    For Bottom-13326mm^2/m=4038 mm^2=13 nos. 20 mm dia are provided

34. maximum Reinforcement was

    For Top:- 19926= 3831mm^2/m=12 nos of 20 mm dia are provided

    For Bottom-22784mm^2/m=4398 mm^2=14 nos 20 mm dia are provided

1. Number of piles=Total Axial load/pile capacity=(1.5DL+1.5LL)/280= numbers
2. Piles in the springs are defined as spring so for that the spring constant

K=EA/L

E=5000(fck)^0.5=5000(25)^0.5=25000 N/mm^2

Area of pile =22/7*d^2=3.142*(500)^2/4=196375m^2

L-10000m

K=25000*0.7855/16=306835.9N/mm==419.

3. Spacing of the piles as per clause number 6.6.2 of IS 2911 the spacing between the piles =2.5dia of the piles =2.5*500=1250mm
4. Now in the next step we have to define the material properties for go to define and define the material properties of Concrete and Reinforcement properties Fe500 & Fe 415.
5. Select the values .
6. Go to define section properties and define pile caps ,pile Dia , and column
7. Add new , defined pile cap pile 500 as Mat , and Column as Stiff.
8. Click on the quick draw around the plots a window will open there insert the columns sizes and these columns to their specified positions. Columns should be stated as stiff material.
9. In the next step pile caps needs to be drawn for that go to Quick draw slab command select pile caps and add it. Piles and pile cap should be stated as stiff material.
10. Select the pile caps and changed the rebar material as Fe 500 .
11. Select the values .Go to define section properties and define pile caps ,pile Dia , and column
12. Add new , defined pile cap pile 500 as Mat , and Column as Stiff.
13. Click on the quick draw around the plots a window will open there insert the columns sizes and these columns to their specified positions. Columns should be stated as stiff material.
14. In the next step pile caps needs to be drawn for that go to Quick draw slab command select pile caps and add it. Piles and pile cap should be stated as stiff material.
15. Select the pile caps and changed the rebar material as Fe 500 .
16. Next, select Draw and Draw Point. A window will appear; mark the locations of the piles there.
17. Select the quick dfaw again, this time around the pints, and then choose the property circular slab add piles dia in this instance 0.5m and add to the points.
18. Pick out these heaps and look again for the rebar components.
19. Currently, we must define each pile as a spring pile.
20. To do this, go to define choose soil spring properties add new property, click on compression only, and then enter the K=EA?L calculation value.
21. Select all of the piles, then select Assign, Support Data, Spring Properties, and Assign.
22. Select the values .
23. Go to define section properties and define pile caps ,pile Dia , and column
24. Add new , defined pile cap pile 500 as Mat , and Column as Stiff.
25. Click on the quick draw around the plots a window will open there insert the columns sizes and these columns to their specified positions. Columns should be stated as stiff material.
26. In the next step pile caps needs to be drawn for that go to Quick draw slab command select pile caps and add it. Piles and pile cap should be stated as stiff material.
27. Select the pile caps and changed the rebar material as Fe 500 .
28. Enter define, choose the define beam, and define the tie beams whose thickness should be equal to the thickness of the pile caps.
29. Check the design preferences to see if the rebar material is Fe 500.
30. Continually define the load combinations by going to define. uls and sls
31. visit the design and design preferences page.
32. Run the Analysis after saving the model.
33. Shapes with deformations demonstrated how minimal they are.
34. Add the design strips to the task