Design of multistorey building
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Transcript of Design of multistorey building
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By :D.J.P.K.SIVAJI (11AP1A0107)
P.S.S.VIJAYA VARMA (11AP1A0122)
P.S.PAVAN KUMAR (11AP1A0115)
B.ADITYA (11AP1A0104)
G.NAGA SRINIVASULU (11AP1A0109)
P.PRUDVI RAJU (11AP1A0124)
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CONTENTS
1. INTRODUCTION
2. CODES
3. STATEMENT OF THE PROJECT
4. LOADS ON THE STRUCTURE
5. OBJECTIVE OF STRUCTURAL DESIGN
6. DESIGN AND ANALYSIS
7. REFERENCES
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INTRODUCTION
Our project is based on the design and analysisof the multi-storied building.
Live loads and dead loads are taken into consideration and analysis is done manually.
Notation adopted through out the project issame as in IS-456-2000.
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STATEMENT OF THE PROJECT :
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1.Utility of building : Residential building
2.Shape of the building: Rectangular
3.Type of walls : Brick wall
4. No . of flats for each floor : G+14
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Geometric details :
Floor Height : 3.0 M
Height of Plinth : 0.6 M above G.L
Depth of Foundation : 6 ft below G.L
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Material details : Concrete Grade : M15, M20
Grade of steel : HYSD
REINFORCEMENT of Grade Fe415
Bearing Capacity of Soil : 400 KN/M2
Type Of Construction : R.C.C
framed structure
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DIFFERENT TYPES OF LOADS ON
STRUCTURE
Dead loads
Imposed loads
Wind loads
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Dead loads
Involves self weight of
RCC slab
Beams & columns
Plinth
Walls
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Imposed loads
Imposed also known live loads
Load over the floor i.e. load of persons it
is calculated as 0.5 kN/m2
This load is applied over the length
of structure
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Wind loads
Wind is air in motion
Intensity of wind and exposure are applied
in the directions as required
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TYPES OF LOADS IMAGE VIEW
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Load combinations
The structure should be analysed forcombination of loads as in practicewe have number of loads in variousdirections act
Some of the combinations to bechecked are
DD + LL = 1.5
DD + LL + WL = 1.2
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Density of materials used
MATERIAL DENSITY
i) Plain concrete 24.0 KN/m3
ii) Reinforced 25.0 KN/m3
iii) Flooring material 20.0KN/m3
iv) Brick masonry 19.0KN/m3
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OBJECTIVES OF STRUCURAL DEIGN
Structure designed should satisfy the
criteration of ultimate strength.
Structure should satisfy the serviceability
It should satisfy the stability against
overturning , sliding , and buckling.
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The main objective of the design are
Foundation design
Column design
Beam design
Slab design
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Structural design
For slabs , Depth is 120 mm provided
Factored Load on slab is 9KN/m
For beams, after calculations are done. the
Dimensions of beam is 230*420mm
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Shape of column is Rectangular
For columns, the dimension of column is230*350mm & 230*450mm
For footings, the bearing capacity of soil is
400Kn/m2
To provide the dimension of footing is
2000*2000mm
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DESIGN OF THE SLAB
If Lx/Ly < 2 two way slab.
> 2 one way slab.
LOADS ON SLABS :
Dead load = thickness * unit weight of concrete.
Live Load for slab = 2.5
CALCULATION OF B.M:
M x = α x W Lx2
M y = α y W LY2
Check for depth d = √ ( Mu/2.7*b)
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REINFORCEMENT :
Mu = 0.87 f y A s t d [1- Ast*fy/bd*fck]
• Max Dia of the bars = 10mm
• Spacing of the bars 300 mm c/c
• CHECK FOR DEVELOPMENT LENGTH :-
Id = (Øσs)/(4Ʈbd)
• CHECK FOR SHEAR
Vu / b d
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DESIGN OF BEAMS
Max Dimensions of the beam
230*420mm
230*520mm
Max Dia of the beam = 12mm HYSD
bars.
Clear cover of the beams = 25mm.
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DESIGN OF COLUMNS
• Max dimensions of the columns
230*350mm
230*450mm
• Max diameter of the bar = 16mm
• Clear cover = 40mm
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FOOTINGS
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STAIR CASE
Type : Open – newel stair case
No. of flights = 3
No. of steps for flight = 7
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ANALYSIS
Analysis of frames is done by using KANIS Method.
The KANIS Method to be simple for multi storeyed building.
Analysis is done for RCC structure
M ab=MF ab +2M’ab +M ’ba
M ba=MF ba +2M’ba +M’ ab
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DESIGN OF WATER TANK
Capacity required 32000 lit
wall thickness 200 mm
Area of the tank 2.6 x 3.6 m2
Total Height of the water tank 3.96 m
Total load 4 KN/M2
Reinforcement provided 8 mm Ø bars at
240 mm c/c
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RCC analysis
Code is assigned as IS:456-2000
The parameters are assigned to the structure
Commands to be given are
concrete design
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Conclusions
It is Manual design.
we can do this analysis within no time but
the basic thing is to know the concept
behind it.
The same result can be achieved using
the software like “Staad-Pro”.
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REFERENCES
Structural analysis by THANDAVA MURTY
IS456-2000 CODE
Design of RCC structures by N.KRISHNAM RAJU
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Thank you..!
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Any Queries …?