Project 1

1. Design a multi-storey Residential Building located in Bangalore using STAAD Pro Connect Edition. The specification must be as follows: 

Building floors	G + 6 + R
Plan dimension	B = 25m ,  L = 16m
Storey Height	h = 3.5m
Soil	Hard soil
Use	Residential Purpose
Safe Bearing Capacity	180 kN/m2
Maximum slab thickness	150mm

Assume suitable sections for structural elements. Follow IS456, IS1893 and IS 875

1. Prepare a Design Basis Report for the project
2. Create structural model using STAAD Pro Connect Edition
3. Prepare DL, LL, WL and EQL load calculations as per IS 875 standards
4. Design slab element using MS – Excel
5. Design beam and column element using STAAD RCDC. Attach the design calculation report.
6. Design Foundations using STAAD Foundation.
7. Prepare bar bending schedule for beam and column using STAAD RCDC
8. Attach necessary sketches and drawings wherever required.
9. All stipulations, assumptions and design parameter must adhere to Indian Standards.

AIM: To design a multi-storey Residential building which is located in Banglore using the STAAD Pro Software.

PROCEDURE:

DBR-Design Basis Report:

GIVEN DATA:

Building Floors : G+6+R

Plan Dimension : B = 25m,L = 16m.

Story Height : h = 3.5m.

Soil : Hard Soil.

Use : Residential Purpose.

Safe Bearing Capacity : 180 Kn/sq.m.

Maximum Slab thickness : 150 mm.

Material Specification:

Assume the size of the beams : 0.30 X 0.45 m.

Assume the size of the column : 0.6 X 0.6 m.

Loads Calculations:

Dead Load(IS 875 Part-l):

Dead Load on Floor:

Dead weight due to slab = 0.15 X 25 = 3.75 KN/sq.m

Partitions : 1.5 KN/sq.m

Floor finish : 2.5 KN/sq.m

Miscellaneous : 1 KN/sq.m

Total Floor Load = 8.75 KN/sq.m.

Dead Load on Roof (IS 875 Part-l):

Dead Load on roof slab = 3.75 KN/sq.m.

Insulation and Water proofing = 0.5 KN/sq.m.

MEP Services = 0.5 KN/sq.m.

Miscellaneous = 0.5 KN/sq.m.

Total Roof Load = 5.25 KN/sq.m

Live Load (IS 875 Part ll):

For Residential Building Live Load = 3 KN/sq.m.

For Roof Lie Load = 1.5 KN/sq.m.

Wind Load Calculation (IS 875 Part-lll):

	Calculation of Wind Load (IS 875 - Part 3)
	Design Wind Speed				Vz	=	Vb k1 k2 k3 k4   m/s
	Basic Wind Speed				Vb	=	33	m/s
	Probability factor				k1	=	1
	Terrain factor , Category				for k2	=	Category 4, Class B
	Topography factor				k3	=	1
	Design Wind Pressure				Pz	=	0.6 Vz2
			Height	k2	Vz	Pz	Pz in kN/m2
			3.5	0.76	25	377.40	0.38
			7.0	0.76	25	377.40	0.38
			10.5	0.76	25	377.40	0.38
			14.0	0.76	25	377.40	0.38
			17.5	0.76	25	377.40	0.38
			21.0	0.77	25	387.40	0.39
			24.5	0.83	28	454.48	0.45
			26.0	0.86	28	483.25	0.48

Seismic Load:

Calculation of Seismic Load (IS 1893 - Part 1)
	Design Base Shear				VB	=	Ah W	kN
	Design Horizontal Acceleration Coefficient
					Ah	=
	Zone factor				Z	=	0.1
	Soil Condition factor , Sa / g
					T	=
	Height of building				h	=	26	m
	Base dimension of building				Along X	=	16	m
					Along Z	=	25	m
					T along X	=	0.59	s
					T along Z	=	0.47	s
					Sa / g	=	2.325	2.906
	Response Reduction Factor				R	=	5
	Importance Factor				I	=	1
	Horizontal Acceleration Coefficient				Ah	=	0.0232		0.02906
					Ah	=	2.3248	%	2.905983
	Seismic Weight
	Area of Each floor				A	=	400	m2
	Due to Dead Loads  , Typical Floor				DL	=	8.75	kN/m2
					W DL	=	3500	kN
	Due to Dead Loads  ,Roof				DL roof	=	5.25	kN/m2
					`	=	2100	kN
	Due to Live Loads , Typical Floor				LL	=	3	kN/m2
					W LL	=	600	kN
	Due to Live Loads , Roof				LL	=	1.5	kN/m2
					W LL	=	0	kN
	Total Seismic Weight				W	=	30800	kN
	Design Base Shear				VB	=	716.03	kN
	Lateral Force at Different Levels
	Storey level	Wi	hi	Wihi2	ki	Lateral Force
		(kN)	(m)			Qx	Qz
	Roof	2100	26	1419600	0.17	120.28	120.28
	7th	4100	24.5	2461025	0.29	208.51	208.51
	6th	4100	21	1808100	0.21	153.19	153.19
	5th	4100	17.5	1255625	0.15	106.39	106.39
	4th	4100	14	803600	0.10	68.09	68.09
	3rd	4100	10.5	452025	0.05	38.30	38.30
	2nd	4100	7	200900	0.02	17.02	17.02
	1st	4100	3.5	50225	0.01	4.26	4.26
			∑	8451100	1.00	716.0342	716.0342

Design slab element using MS – Excel:

Design of Slab (IS 456)
	Span Shorter Direction (Clear)			ly	=	5.00	m
	Span Longer Direction (Clear)			lx	=	4.00	m
	Live Load on the Slab			LL	=	3.00	kN / m2
	Compressive stength of concrete			fck	=	30	N / mm2
	Yield strength of steel			fy	=	415	N / mm2
	Unit weight of concrete			Ƴc	=	25.00	kN / m3
	Unit weight of floor finish 100 mm			Ƴ	=	22.00	kN / m3
	Clear concrete cover				=	25.00	mm
	Bearing of slab			B	=	250.00	mm
Cl 24.1	Span to effective depth ratio			l/d	=	32
	Given Overall depth			D	=	150.00	mm
	Therefore Provide Overall depth			D	=	150.00	mm
	Dia of bars for short direction			Φ	=	12	mm
	Dia of bars for long direction			Φ	=	12	mm
	Effective Depth			d	=	119.00	mm
	Loading on the slab
	Dead Load of the slab (DL)					3.75	kN / m2
	Super Dead Load					4.00	kN / m2
	Live Load on the slab					3.00	kN / m2
	Total Load on the slab (TL)					10.75	kN / m2
	Design Load = (Total Load x Load Factor i.e. 1.5)					16.13	kN / m2
	Effective Span			lx	=	5.12	m
				ly	=	4.12	m
	Ratio			ly/lx	=	0.805	Two Way
T26/27
			1.0	ax	1.10	ay
For negative moments (at top)			0.047	0.035279	0.053	0.047
For positive moments (at bottom)			0.035	0.025232	0.04	0.035
BM per unit width of slab				Mx = ax w lx2		My = ay w lx2
	For negative moments (at top)			14.91		19.86	KN-m/m
	For positive moments (at bottom)			10.66		14.79	KN-m/m
	Shear force , V		0.5wlx	41.27			kN/m
To check the effective depth of slab
				Mu,lim	=	0.138fckbd2
				d	=	60.01	mm
Depth of slab for shear force
T20				τc,max	=	3.5	N/mm2
				τc	=	0.29
Cl 40.2.1				k	=	1.3	D=150mm
				τc	=	0.377	N/mm2
				τv	=	Vu / bd
					=	0.35	N/mm2
				τv	<      τc	<  τc,max
				0.35	0.38	3.5
					SAFE
Determination of areas of steel
				Mu =	0.87fyAstd(1-Astfy/fckbd)
For Negative moments				Mu Top	=	14.91
				Ast	=	434.56	mm2/m
For Positive moments				Mu Bot	=	10.66
				Ast	=	310.81	mm2/m
Determination of distribution steel
				Astmin	=	0.12bd
						142.8	mm2
Selection of reinforcing bars
		Area of bars (Top steel)			=	113.04	mm2
			Spacing		=	260
					=	240	mm
			Provide 12mm bars at a spacing 240mm
		Area of bars (Bottom steel)			=	113.04	mm2
			Spacing		=	364
					=	300	mm
			Provide 12mm bars at a spacing 300mm

Create structural model using STAAD Pro Connect Edition

- First we need to model the building frame according to the Architectural layout and the data given above.

- So in order to model the building frame first we need to open the STAAD Pro software. Create a new file and then open the file after that there will be an option called structure wizard just click on that option in order to create the model frame just as shown in the below given image

- After clicking on the structure wizard then there will be another dialouge box in that dialouge box there will be another option called default.stp - StWizard in that dialouge box there will be an option called Model type in that select Frame models and in that select the Bay frame option and change the desired units just as shown in the below given image:

- After that just drag the bay frame int the space and then there will be another dialouge box named as the select parameters in that dialouge box fill out the all necessary data just as shown in the below given image:

- After that click on the option apply after clicking on the apply option the model frame has been created just as shown in the below given image:

- After this merge this model into the model just as shown in the below given image:

- Frame will be generated automatically after merging the model into the STAAD Pro model just as shown in the below given image:

- After generating the model frame now we will be assigning the material and the section properties which is going to be used in the model.

- So on order to create the materials go to the material option add the and then select the material here i am selectiong concrete as the material which is going to be used in the given model.And then specify the compressive strength 

- Now after that go to the properties option just go to the add define option then there will be another dialouge box named as the property in that dialouge box fill out the necessary option for the beams and click on the add option just as shown in the below given image:

- Now do the same procedure for the columns and fill out the necessary details just as shown in the below given image:

 

- Now do the same procedure for the plates and fill out the necessary details just as shown in the below given image:

                           

- And then assign it to the columns and the beams. In order to assign it to the column just select the parallel to the Y and then assign it to the column to the selected sections just as shown in the below given image:

- The columns have been assigned to the selected columns just as shown in the below given image:

- And now in order to assign the beams select parallel to X and Z and assign it to the beams to the selected sections just as shown in the below given image:

                       

- And now assign it to the selected beams just as shown in the below given image:

- And now in order to assign the plate, so to front view click on ground floor, create a view as the height of 7m floor is 3.5, whereas the height of roof is 1.5m. Go to geometry and click on add plate option, using node cursor drag on four corners. Use translational repeat in order to transfer the plate to rest floor. As view created for floors with equal spacing. Click on whole structure option to view the whole structure.

-Use translational repeat in order to transfer the plate to terrac floor

-And now assign it to the selected beams just as shown in the above image.

- After this now we will be adding the supports to the model frame so in order to assign the support we need to go to the elevation view select all the nodes of the base level and then assingn the fixed support after adding it to the support pannel.

- Just go to the supports option select the fixed support and then click on the option assign to the selected view just as shown in the below given image:

- And after that check the model in the 3D rendered view in order to check any errors just as shown in the below given image:

                

- And now we will be adding the seismic loadings to the frame,in order to do that click on the option load case detail and then click on the add option and add the seismic load.

 - In order to add the siesmic load first we need to go to the seismic defination option click on that option after that there will be another dialouge box named as the Add New:Seismic Definitions,in that dialouge box there is an option type in that box choose the IS code as IS 1893:2016 and there will be another option called Generate click on that option just as shown in the below given image: 

- After clicking on the option Generate there will be another dialouge box named as the IS:1893 Seismic Parameters, in that dialouge box fill out the information just as shown in the below given image:

 - And now after this we will be adding the seismic self weight of the building just as shown in the below given image:

 - And after this we will be adding the floor weight just as shown in the below given image as per calculations, the dead load load on typical floors is 8.75KN/m^2

 

- And after this we will be adding the floor weight just as shown in the below given image as per calculations, the dead load on Roof is 5.25KN/m^2

 

- And after this we will be adding the floor weight just as shown in the below given image as per calculations, the live load on typicals is 5.25KN/m^2 and live load roof is neglected.

 

- After that we will be defining he wind load in order to define and assign the wind load go to the load case detail option click on the add option and add a new load named as the Wind Load.

- Now add the wind load according to the Calculation in accordance with the IS 875(Part-III) just as shown in the below given image:

 

- Add Wind exposures

- Now add the earthquake load in the X and -X direction just as shown in the below given image and do the same for -X by defining the factor as -1.

- Now add the earthquake load in the Z and -Z direction just as shown in the above given image and do the same for -Z by defining the factor as -1.

- Now add the wind case in the X-direction,add the wind factor in the both direction i.e,winndward and leeward direction just as shown in the below given image:

X-Windward:

-X-Leeward:

Z-Windward:

-Z-Leeward:

- In order to define and assign the dead load case for self weight,go to the loads tab in that tab there will be an option called Load case details click on that option and thn click on the Add option,after clicking on that option there will be another dialouge box named as the Add New:Load Cases in that dialouge box add the Load case as Dead Load and give the tittle as Dead Load  and then click on the option Add and then close.

- Self weight is added as shown

- And after adding the self weight now assigned it to the view

- And now define and assign the superimposed brickwall load for the typical floors,in order to do that first we need to go to the Load case detail here click on the add option then there will be another dialouge box named as the Add Loads:Load Items in that dialouge box go to the option member load and then go to the option Uniform force and put all the necessary details just as shown in the below given image:

- For Typical floor, the outer wall uniform force is 0.23*20*3.5 = 16.1KN/m

- For Typical floor, the inner wall uniform force is 0.12*20*3.5 = 8.75KN/m

- For Roof floor, the inner wall uniform force is 0.12*20*1.5 = 3.75KN/m

- And now we will be adding the Plate load, as plate created in order to do that go to the load case detail and click on the add option and then there will be another dialouge box named as the Add New:Load Items and fill all the necessary details just as shown in the below given image:

- Plate load on typical floors

- Note, inorder to add plate load, first assign mesh and then work on it.

- Plate load on roof

- All the dead loads have been defined and assigned now we have to assign and define the Live Load,so in that case first we need to go to the Load Case detail just click on that option after that click on the option Add and then there will be another dialouge box named as the Add New:Load Cases and give the loading type as Live and tittle as the Live Load and then click on the option add and close just as shown in the below given image:

- Now give the live load to the typical floors according to the IS code 875. So in order to do that first go to the option Live Load and then click on the option add and then there will be another dialouge box named as the Add New:Load Items in that there is an option floor load just click on that option and then fill out the necessary information and then click on the add option and then close just as shown in the below given image:

 

- And now we will be adding the roof load just as shown in the below given image:

 - Image of all the Load definitions and Load cases

- And now that all the loads have been applied here successfully to the building and now add the analysis command and run the analysis just as shown in the below given image:

 

- In Post processing, Go to Shear Force

- Bending Moment

- Plate Results, Change the load cases to dead load and stress type to max absolute.

- Plate strees contour image is shown below:

 - Go to design tab, click on define paramters and select the paramter required.

 

 - Double click on column, to view the properties 

- Double click on column, to view the properties 

Design beam and column element using STAAD RCDC. Attach the design calculation report:

- So in order to design the beams using the RCDC,go to the designing tab there will be an option called RCDC just click on that option and then there will be a new window of RCDC opens in that window fill out the necessary information and click on the Create New Project opion just as shown in the below given image:

- Fill the New Project data

- After clicking on the Create New Project it will take some time to analyse all the structural elements after analysing the elements there will be another window of the new project that we just created it shows the beams details just as shown in the below given image:

 

- After this go to the Setting tab then there will be a drop down list in that list there will be an option called General and Reinforcement just click on that option,after clicking that option there will be another dialouge box named as the General and Reinforcement Settings in that dialouge box fill the data just as shown in the below given image:

- Now again go to the Setting tab click on that again there will be a drop-down list in that list there will be another option called Rebar Curtailment,after clicking on that option there will be another dialouge box named as the Curtailment settings,in that dialouge box fill out the necessary data and click on the OK option just as shown in the below given image:

- After the curtailment settings now acquire all the loads and the load combinations,just as shown in the below given image:

- Now import the load combinations also just as shown in the below given image:

- Now Run the automated design,in order to do that go to the Design option then there will be a drop-down list in that list there will be an option called Auto-design just click on that option and then wait for few minutes the auto generated report is shown below:

- Failure Diagnostics, None of the beams have failed.

- And now we will be generating the reinforcement detailing of the beam,so in order to do that just go to the report option then there will be a drop-down list in that list there will be an option called Elevation just click on that option after that there will be another dialouge box named as the Select Beam in that dialouge box select the desired beam in which we want to see the reinforcement detailing,select the beam and click on the OK option just as shown in the below given image:

- Beam design calculations, The report file will attach below in browse tab. 

- And now we are going to design the column in the same manner as the beam designing.

- Create the project and wait for few seconds just as shown in the below given image:

-  After clicking on the Create New Project it will take some time to analyse all the structural elements after analysing the elements there will be another window of the new project that we just created it shows the columns details just as shown in the below given image:

- After this go to the Setting tab then there will be a drop down list in that list there will be an option called General and Reinforcement just click on that option,after clicking that option there will be another dialouge box named as the General and Reinforcement Settings in that dialouge box fill the data just as shown in the below given image:

- After the curtailment settings now acquire all the loads and the load combinations,just as shown in the below given image:

- Now import the load combinations also just as shown in the below given image:

- Now Run the automated design,in order to do that go to the Design option then there will be a drop-down list in that list there will be an option called Auto-design just click on that option and then wait for few minutes the auto generated report is shown below:

- Failure Diagnostics, None of the beams have failed.

- And now we will be generating the reinforcement detailing of the beam,so in order to do that just go to the report option then there will be a drop-down list in that list there will be an option called Elevation just click on that option after that there will be another dialouge box named as the Select Beam in that dialouge box select the desired beam in which we want to see the reinforcement detailing,select the beam and click on the OK option just as shown in the below given image:

- Column design calculations, The report file will attach below in browse tab. 

 

Design Foundations using STAAD Foundation:

- First of all import the file into the STAAD Pro Foundation and then define the basic information like the general information,scale things etc which is related to the foundation.

-Now after setting the basic information regarding the foundation,now we need to go to the loading and factors options,in that option we will be able to find the basic laodings and the load combinations. 

Design Output :

Prepare bar bending schedule for beam and column using STAAD RCDC:

Bar Bending Schedule for Beam:

Bar Bending Schedule for Column:

                             

Result:

Hence, all task performs in staad, RCDC and foundation design and Necessary files are attached.

_____________________________________***THE END***_______________________________