REPORT ON G+4 RCC HOSTEL BUILDING ANALYSIS AND DESIGN USING STAAD PRO SOFTWARE

GIRIJANANDA CHOWDHURY INSTITUTE OF MANAGEMENT AND
TECHNOLOGY
DESIGN OF STRUCTURES –IV LAB (CE131811) REPORT
ANALYSIS AND DESIGN OF A MULTISTOREY (G+4) BUILDING USING STAAD PRO
Submitted in partial fulfilment of the requirement for the Degree of Bachelor of Technology In
DEPARTMENT
OF
CIVIL ENGINEERING
ASSAM SCIENCE AND TECHNOLOGY UNIVERSITY,
GUWAHATI
SUBMITTED BY
NAME ROLL NO.
1. ABHINANDAN NEOG 180350001002
2. BOBY RAMDEYPI 180350001010
3. HIMADRI BARUAH 180350001015
4. RAKESH DAS 180350001035

DECLARATION
We hereby declare that the entitled “Analysis and Design of a Multi-storey (G+4) Building
using Staad pro” is genuine Design of structures- IV lab (CE31811) work carried out by us,
Department of Civil Engineering, Girijananda Chowdhury Institute of Management and
Technology. This Staad pro work is submitted to The Department of Civil Engineering during
the session 2020-2021 and has not been submitted to any other courses or University for award
of any degree.
NAME ROLL NO. SIGNATURE
8. RAKESH DAS 180350001035

GIRIJANANDA CHOWDHURY INSTITUTE OF MANAGEMENT
AND TECHNOLOGY
DEPARTMENT OF CIVIL ENGINEERING
CERTIFICATE
This is to certify that the entitled “Analysis and Design of a Multi-storey (G+4) Building using
Staad pro” is genuine Design of structures- IV lab (CE31811) report has been submitted to the
Department of Civil Engineering, Girijananda Chowdhury Institute of Management and
Technology, Guwahati-17 during the academic session 2019-2020 under my guidance and
supervision.
I approve the project for submission as required for partial fulfilment for completion of the
Bachelor of Technology Degree by following student of 8th
semester B.Tech.
NAME OF STUDENT ROLL NO.
4. RAKESH DAS 180350001035
Subject Teacher
Dr. Snehal Kaushik
Assistant Professor
Civil Engineering Department
GIMT, Guwahati
Dr. Krishnanga Gohain Prof. Thuleswar Nath
HOD, Civil Engineering Department Principal
GIMT, Guwahati GIMT, Guwahati

ABSTRACT
Analysis of a structure deals with the determination of behaviour of structures in order to
predict the responses of real structures such as buildings, bridges, trusses etc. Under the
influences of expected loading and external loading during the service life of a structure. The
results of the analysis are then used for structural health monitoring. Computer software are
also used for the calculation of forces, bending moments for a complex structural system. The
principle objective of this project is to analyse and design a multi-storeyed building [G +4 (3
dimensional frame)] using STAAD Pro. The design involves load calculations manually and
analysing the whole structure by STAAD Pro. From model generation, analysis, and design to
visualization and result.
STAAD or (STAAD.Pro) is a structural analysis and design computer program originally
developed by Research Engineers International in Yorba Linda, CA. In late 2005, Research
Engineer International was bought by Bentley Systems.
The collected data is analysed and a 3-D model is generated using STAAD Pro. The various
loads acting on the structure is calculated and the structure is analysed for the various load
combinations. Design of the building is done. The obtained results are analysed. Manual
calculation and design of slabs, beams, s and columns are done. In the post-processing mode,
after completion of the design, we can work on the structure and study the bending moment
and shear force values with the generated diagrams. We may also check the deflection of
various members under the given loading combinations. The design of the building is
dependent upon the minimum requirements as prescribed in the Indian Standard Codes. The
minimum requirements pertaining to the structural safety of buildings are being covered by
way of laying down minimum design loads which have to be assumed for dead loads, imposed
loads, and other external loads, the structure would be required to bear. Strict conformity to
loading standards recommended in this code, it is hoped, will ensure the structural safety of
the buildings which are being designed. The whole structure designed by LIMIT STATE
method.

CONTENT
DECLARATION i
CERTIFICATE ii
ABSTRACT iii
CHAPTER 1 INTRODUCTION WITH STAAD. Pro 1
1.1 AIM AND SCOPE OF WORK
1.2 DESIGN PHILOSOPHIES
1.3 DESIGN CODES
1.4 METHODOLOGY
1.5 REPORT STATEMENT
1.6 BUILDING PLAN AND STRUCTURAL PLAN
1.7 SECTION TYPES FOR CONCRETE DESIGN
1.8 MODELLING OF STRUCTURE
1.9 ELEMENTS PROPERTIES AND SIZE
1.10 RESTRAINT BY FIXED SUPPORT
1.11 APPLICATION OF LOADS
1.12 GUI ANALYISING WINDOW
1.13 POST PROCESSING FACILITIES
CHAPTER 2 ANALYSIS OF G+4 RCC FRAMED BUILDING 18
USING STAAD. Pro
CHAPTER 3 DESIGN OF G+4 RCC FRAMED BUILDING 24
U USING STAAD.Pro
CHAPTER 4 ISOLATED FOUNDATION DESIGN 33
USING STAAD foundation 5.3
CHAPTER 5 CONCLUSION 55
REFERENCE 56
ATTACHED: STAAD.Pro COMMAND FILE.

CHAPTER 1: INTRODUCTION
AIM AND SCOPE OF WORK
Human life is affected due to nature’s forces like floods, hurricanes, tornadoes,
earthquakes etc. The structural design for a building must ensure that the building is able
to stand safely, to function without excessive deflections or movements which may cause
fatigue of structural elements, cracking or failure of fixtures, fittings or partitions, or
discomfort for occupants. It must account for movements and forces due to temperature,
creep, cracking and imposed loads. It must also ensure that the design is practically
buildable within acceptable manufacturing tolerances of the materials. It must allow the
architecture to work, and the building services to fit within the building such that it is
functionable (air conditioning, ventilation, lighting etc.).
The aim of this project work is to analyze a 4-storeyed hostel building for different load
combinations using STAAD Pro software. Based on the analysis, design of the structure
is done mainly in accordance with IS specifications.
DESIGN PHILOSOPHIES
The limit state method is adopted for the analysis and design of the structure. IS codes,
SP-16 and SP-32 charts are also used as an aid for detailing and design purpose.
The major requirements of a properly designed building are:
(a) GOOD STRUCTURAL CONFIGURATION: Its size, shape and structural
system carrying loads are such that they ensure a direct and smooth flow of inertia forces
to the ground.
(b) LATERAL STRENGTH: The maximum lateral (horizontal) force that it can
resist is such that the damage induced in it does not result in collapse.
(c) ADEQUATE STIFFNESS: Its lateral load resisting system is such that the
earthquake induced deformations in it do not damage its contents under low-to moderate
shaking.
(d) GOOD DUCTILITY: Its capacity to undergo large deformations under severe
earthquake shaking even after yielding is improved by favourable design and detailing
strategies.
Page 1

METHODOLOGY
The stress analysis on the fields of civil, mechanical and aerospace engineering is
invariably complex and for many of the problems, it is extremely difficult to obtain
analytical solutions. For most of the practical problems, the engineer resorts to numerical
methods that provide approximate but acceptable solutions. With the advent of computers,
software’s were developed for the analysis of structures of complex shapes and
complicated boundary conditions. A number of packages are hostilely available for wide
range of applications. STAAD is one among them.
The major features are:
(i) Element library
(ii) Analysis capabilities and range of library
- linear static analysis
- heat transfer analysis
- non- linear static analysis
- stability analysis
- dynamic analysis
- coupled field analysis
(iii) Types of loading
(iv) Boundary conditions
(v) Material properties and models
(vi) Pre and Post processing
STAAD Pro is widely used software for structural analysis and design from research
engineers international. It is capable of analysing and designing structures consisting of
frame, plate bar-shell and solid elements. It consists of GUI and analysis and design
engine. The STAAD analysis and design engine is a general purpose calculation engine
Page 2

for structural analysis and integrated steel concrete, timber and aluminium design. Fig.
1 shows a typical STAAD Pro Window.
Fig. 1 STAAD.Pro Window
STAAD Pro 2004 is an effective software tool for the analysis and design of structural
members. Hence this software could be used to design a structure against earthquake. The
software follows the matrix stiffness principle in analysing the structure. The steps for
analysing a structure using STAAD Pro 2004 are given below.
• Generation of Nodes
• Modelling of the Structure
• Assigning of the structural members
• Restraints
• Application of loads
• Run analysis
Page 3

REPORT STATEMENT
To design the following structural elements for a proposed 4 storey building (G+4) to be
constructed in Guwahati.
Following data given:
a) Height of Building
1. Plinth Height= 50 cm
2. Bottom Storey= 4.5 m
3. Second Storey= 3.5 m
4. Other Stories= 3.2 m
5. Parapet= 60 cm
b) Live Load
1. First Floor= 4 KN/m²
2. Second Floor= 3 KN/m²
3. Other Floors= 2.5 KN/m²
c) Specifications
1. Roof Covering-Tarfelt= 0.5 KN/m²
2. External wall= 250 mm Brickwork with 12mm Thick Plaster on Both Sides
3. Thickness of ceiling plaster =20mm
4. Internal wall =Exerts a load of 1 KN/m² .thickness assume same as external wall.
5. Grade of concrete = M20 & Grade of steel = Fe 415
6. Allowable Bearing Pressure on Foundation Soil= 150 KN/m² at 1.5m depth
Given dimensions –
Floor Column Size (mm) Size of Primary Beam
(mm)
Size of Secondary
Beam (mm)
1st 400 × 600 400 × 600 300 × 400
2nd 400 × 550 400 × 600 300 × 400
3rd 400 × 500 400 × 550 300 × 400
4th 350 × 450 300 × 450 300 × 400
ROOF 350 × 400 300 × 450 300 × 400
Slab thickness: 120mm
Page 4

5000
2000
4000
Fig 1: Building Plan
(All dimensions are in mm)
3000
3000
3000
3000
3000
3000
Page 5

Fig 2: Structural Plan
5000
2000
4000
3000
3000
3000
3000
3000
3000
1500
1500
x
Page 6

MODELLING OF THE STRUCTURE
After the nodes are created they are joined with line elements (Fig. 2). Based on the
dimension of the building the nodes are joined. Unwanted nodes could be deleted.
Page 7

Fig. 2 modelling of the structure
Page 8

ASSIGNING OF THE STRUCTURAL ELEMENTS
The software has the facility to assign the structural elements. The line elements have to
be assigned as beams and columns and appropriate dimensions are given.
RESTRAINTS
After the structure has been modeled the restraints has to be given. Usually fixed supports
are given (Fig. 3)
Fig. 3 Restraints
Page 9

APPLICATION OF LOADS
There are various loads acting on a structure. Our project study constitutes the analysis of
the following loads
• Self-Weight
• Gravity Load
• Wind Load
• Seismic Load
The loads are applied on the structure as gravity loads (Dead and live loads), Joint loads
(Seismic loads). After the application of different loads, combination of loads has to be
specified as mentioned in IS 456:2000.
RUN ANALYSIS
When the last step, run analysis is executed it shows “Analysis complete”, which indicates
the termination of analysis process (Fig. 4).
Based on the analysis results, the building is designed in accordance with the provisions
mentioned in the Indian Standard Codes.
Page 10

Fig 6 : defining wind load intensities
Fig 5 : seismic load definition
Page 12

Fig 7 : input window of floor load generator
Page 13

Fig8 EQ load on x and z direction
Page 14

As per IS CODE if the building height is more than 10m must to apply
wind load about x and z direction here is the figure shown of wind load
on structure. Page 15

Live load consider at
first floor 4 kn/m2
as
shown in blue colour
second floor 3
kn/m2
as shown in
blue colour
third,forth and
rooffloor 2.5 kn/m2
as
shown in blue colour
Fig9 Live load
Page 16

Fig 11: GUI showing the analysing window
CLICK
Fig 10 dead load
Page 17

CHAPTER 2 ANALYSIS OF G+4 RCC FRAMED BUILDING
USING STAAD. Pro
Page 18

Software licensed to
Job Title
Client
Job No Sheet No Rev
Part
Ref
By Date Chd
File Date/Time
1
24-Jul-21
24-Jul-2021 22:11
DOS LAB REPORT G+4 RESIDENTIAL R.C. BUILDING AT GUWA
Print Time/Date: 24/07/2021 22:33 Print Run 1 of 5
STAAD.Pro V8i (SELECTseries 6) 20.07.11.33
Job Information
Engineer Checked Approved
Name:
Date: 24-Jul-21
Structure Type SPACE FRAME
Number of Nodes 300 Highest Node 300
Number of Elements 537 Highest Beam 556
Number of Plates 91 Highest Plate 629
Number of Basic Load Cases -2
Number of Combination Load Cases 21
Included in this printout are data for:
All The Whole Structure
Included in this printout are results for load cases:
Type L/C Name
Primary 1 EQ X DIRECTION
Primary 2 EQ Z DIRECTION
Primary 3 WIND X DIRECTION
Primary 4 WIND Z DIRECTION
Primary 5 DEAD LOAD
Primary 6 LIVE LOAD
Combination 7 Generated Indian Code Genral_Structures 1
Page 19

Job Title
Client
Job No Sheet No Rev
Part
Ref
By Date Chd
File Date/Time
2
24-Jul-21
24-Jul-2021 22:11
Shear Y
Load 7 :
X
Y
Z
Whole Structure Fy EE60kN:1m 7 Generated Indian Code Genral_Structures 1
Bending Z
Load 7 :
X
Y
Z
Whole Structure Mz 30kNm:1m 7 Generated Indian Code Genral_Structures 1
Page 20

Job Title
Client
Job No Sheet No Rev
Part
Ref
By Date Chd
File Date/Time
3
24-Jul-21
24-Jul-2021 22:11
Load 1
X
Y
Z
Max Absolute
N/mm2
<= 0.001
0.015
0.029
0.044
0.058
0.072
0.086
0.100
0.114
0.129
0.143
0.157
0.171
0.185
0.199
0.214
>= 0.228
Whole Structure
Load 2
X
Y
Z
Max Absolute
N/mm2
<= 0.001
0.008
0.015
0.022
0.028
0.035
0.042
0.049
0.055
0.062
0.069
0.075
0.082
0.089
0.096
0.102
>= 0.109
Whole Structure
Page 21

Job Title
Client
Job No Sheet No Rev
Part
Ref
By Date Chd
File Date/Time
4
24-Jul-21
24-Jul-2021 22:11
Load 3
X
Y
Z
Max Absolute
N/mm2
<= 0
0.003
0.006
0.010
0.013
0.016
0.019
0.022
0.025
0.028
0.031
0.035
0.038
0.041
0.044
0.047
>= 0.050
WIND X
Load 4
X
Y
Z
Max Absolute
N/mm2
<= 0
0.002
0.003
0.005
0.006
0.008
0.009
0.011
0.012
0.014
0.015
0.017
0.018
0.020
0.021
0.023
>= 0.024
WIND Z
Page 22

Job Title
Client
Job No Sheet No Rev
Part
Ref
By Date Chd
File Date/Time
5
24-Jul-21
24-Jul-2021 22:11
Load 5
X
Y
Z
Max Absolute
N/mm2
<= 0.012
0.023
0.033
0.044
0.054
0.065
0.075
0.086
0.096
0.107
0.117
0.128
0.138
0.149
0.159
0.170
>= 0.181
DL
Load 6
X
Y
Z
Max Absolute
N/mm2
<= 0.024
0.032
0.041
0.049
0.058
0.066
0.075
0.084
0.092
0.101
0.109
0.118
0.126
0.135
0.143
0.152
>= 0.160
LL
Page 23

CHAPTER 3 DESIGN OF G+4 RCC FRAMED
BUILDING USING STAAD.Pro
 Go to commands- design- concrete design- changing current code to IS 456
FIG 13: Defining parameter in the structure
Page 24

Job Title
Client
Job No Sheet No Rev
Part
Ref
By Date Chd
File Date/Time
1
24-Jul-21
24-Jul-2021 22:48
Bending Y
Shear Y :
Load 1 :
X
Y
Z
Whole Structure My 65kNm:1m Fy 25kN:1m 1 EQ X DIRECTION
Bending Z
Load 1 :
X
Y
Z
Whole Structure Mz 30kNm:1m 1 EQ X DIRECTION
Page 26

DESIGN OF SECONDARY BEAM
SECONDARY BEAM SIZE 300mm x 400mm FOR ALL FLOOR
Page 27

DESIGN OF PRIMARY BEAM
for 1st
floor primary beam size 600mm x 400mm
for 2nd
Page 28

For 3rd
for 4th
and roof floor primary beam size 450mm x 300mm
Page 29

DESIGN OF COLUMN
For ground floor column size 600mm x 400mm
For 1st
floor column size 550mm x 400mm
Page 30

For 2nd
For 3rd
Page 31

For 4th
floor column size 400mm x350mm
Page 32

CHAPTER 4
ISOLATED SQUARE FOUNDATION DESIGN
Design parameters
ISOLATED SQUARE FOUNDATION
Page 33

FIG- plan and c/s of foundation no. 1
1m
1m
1m
Page 34

Input Values
Footing Geomtery
Design Type : Calculate Dimension
Footing Thickness (Ft) : 305.000 mm
Footing Length - X (Fl) : 1000.000 mm
Footing Width - Z (Fw) : 1000.000 mm
Eccentricity along X (Oxd) : 0.000 mm
Eccentricity along Z (Ozd) : 0.000 mm
Column Dimensions
Column Shape : Rectangular
Column Length - X
(Pl) :
0.600 m
Column Width - Z
(Pw) :
0.400 m
Pedestal
Include Pedestal? No
Pedestal Shape : N/A
Pedestal Height (Ph) : N/A
Pedestal Length - X (Pl)
:
N/A
Page 36

Design Parameters
Concrete and Rebar Properties
Unit Weight of Concrete : 25.000 kN/m3
Strength of Concrete : 20.000 N/mm2
Yield Strength of Steel : 415.000 N/mm2
Minimum Bar Size : Ø16
Maximum Bar Size : Ø20
Minimum Bar Spacing : 50.000 mm
Maximum Bar Spacing : 300.000 mm
Pedestal Clear Cover (P, CL) : 50.000 mm
Footing Clear Cover (F, CL) : 50.000 mm
Soil Properties
Soil Type : Drained
Unit Weight : 22.000 kN/m3
Soil Bearing Capacity : 100.000 kN/m2
Soil Surcharge : 0.000 kN/m2
Depth of Soil above Footing : 0.000 mm
Cohesion : 0.000 kN/m2
Page 37

Min Percentage of Slab : 0.000
Sliding and Overturning
Coefficient of Friction : 0.500
Factor of Safety Against Sliding : 1.500
Factor of Safety Against Overturning : 1.500
------------------------------------------------------
Load Combination/s- Service Stress Level
Load Combination
Number
Load Combination Title
101 1.000 x DL+1.000 x DL+1.000 x DL+1.000 x DL+1.000 x DL+1.000 x DL
Load Combination/s- Strength Level
Load Combination
Number
Load Combination Title
Applied Loads - Service Stress Level
LC
Axial
(kN)
Shear X
(kN)
Shear Z
(kN)
Moment X
(kNm)
Moment Z
(kNm)
101 113.895 16.453 13.963 39.716 -54.436
102 91.116 13.162 11.170 31.773 -43.549
Applied Loads - Strength Level
Page 38

LC
Axial
(kN)
Shear X
(kN)
Shear Z
(kN)
Moment X
(kNm)
Moment Z
(kNm)
201 170.842 24.679 20.944 59.575 -81.654
202 109.339 15.794 13.404 38.128 -52.258
203 136.673 19.743 16.755 47.660 -65.323
204 102.505 14.807 12.566 35.745 -48.992
------------------------------------------------------
Design Calculations
Footing Size
Initial Length (Lo) = 1.000 m
Initial Width (Wo) = 1.000 m
Uplift force due to buoyancy = 0.000 kN
Effect due to adhesion = 0.000 kN
Area from initial length and width, Ao =Lo X Wo = 1.000 m2
Min. area required from bearing pressure, Amin =P / qmax = 1.215 m2
Note: Amin is an initial estimation.
P = Critical Factored Axial Load(without self weight/buoyancy/soil).
qmax = Respective Factored Bearing Capacity.
Final Footing Size
Length (L2) = 2.200 m Governing Load Case : # 101
Page 39

Width (W2) = 2.200 m Governing Load Case : # 101
Depth (D2) = 0.305 m Governing Load Case : # 101
Area (A2) = 4.840 m2
------------------------------------------------------
Pressures at Four Corner
Load Case
Pressure at
corner 1 (q1)
(kN/m2)
Pressure at
corner 2 (q2)
(kN/m2)
Pressure at
corner 3 (q3)
(kN/m2)
Pressure at
corner 4 (q4)
(kN/m2)
Area of
footing in
uplift (Au)
(m2
)
101 -27.1248 39.8792 89.4387 22.4346 0.542
101 -27.1248 39.8792 89.4387 22.4346 0.542
101 -27.1248 39.8792 89.4387 22.4346 0.542
101 -27.1248 39.8792 89.4387 22.4346 0.542
Page 40

If Au is zero, there is no uplift and no pressure adjustment is necessary. Otherwise, to account for uplift, areas of negative pressure will be set to zero and
the pressure will be redistributed to remaining corners.
Summary of adjusted Pressures at Four Corner
Load Case
Pressure at
corner 1 (q1)
(kN/m2)
Pressure at
corner 2 (q2)
(kN/m2)
Pressure at
corner 3 (q3)
(kN/m2)
Pressure at
corner 4 (q4)
(kN/m2)
101 0.0000 38.5250 96.2129 20.1325
101 0.0000 38.5250 96.2129 20.1325
101 0.0000 38.5250 96.2129 20.1325
101 0.0000 38.5250 96.2129 20.1325
Details of Out-of-Contact Area
(If Any)
Governing load case = 101
Plan area of footing = 4.840 sq.m
Area not in contact with soil = 0.542 sq.m
% of total area not in contact = 11.200%
------------------------------------------------------
Check For Stability Against Overturning And Sliding
- Factor of safety against sliding Factor of safety against overturning
Load Case
No.
Along X-Direction Along Z-Direction About X-Direction About Z-Direction
101 4.583 5.400 3.772 2.790
102 4.863 5.730 4.003 2.961
Page 41

Critical Load Case And The Governing Factor Of Safety For Overturning and Sliding X Direction
Critical Load Case for Sliding along X-Direction : 101
Governing Disturbing Force : 16.453 kN
Governing Restoring Force : 75.400 kN
Minimum Sliding Ratio for the Critical Load Case : 4.583
Critical Load Case for Overturning about X-Direction : 101
Governing Overturning Moment : 43.975 kNm
Governing Resisting Moment : 165.877 kNm
Minimum Overturning Ratio for the Critical Load Case : 3.772
Critical Load Case And The Governing Factor Of Safety For Overturning and Sliding Z Direction
Critical Load Case for Sliding along Z-Direction : 101
Governing Disturbing Force : 13.963 kN
Governing Restoring Force : 75.400 kN
Minimum Sliding Ratio for the Critical Load Case : 5.400
Critical Load Case for Overturning about Z-Direction : 101
Governing Overturning Moment : -59.454 kNm
Governing Resisting Moment : 165.877 kNm
Minimum Overturning Ratio for the Critical Load Case : 2.790
------------------------------------------------------
Moment Calculation
Page 42

Check Trial Depth against moment (w.r.t. X Axis)
Critical Load Case = #201
Effective Depth = = 0.247 m
Governing moment (Mu) = 69.520 kNm
As Per IS 456 2000 ANNEX G G-1.1C
Limiting Factor1 (Kumax) =
= 0.479107
Limiting Factor2 (Rumax) = = 2755.432917 kN/m2
Limit Moment Of Resistance (Mumax) = = 369.826901 kNm
Mu <= Mumax hence, safe
Check Trial Depth against moment (w.r.t. Z Axis)
Effective Depth = = 0.247 m
Governing moment (Mu) = 68.703 kNm
As Per IS 456 2000 ANNEX G G-1.1C
Limiting Factor1 (Kumax) =
= 0.479107
Limiting Factor2 (Rumax) = = 2755.432917 kN/m2
Limit Moment Of Resistance (Mumax) = = 369.826901 kNm
Page 43

Mu <= Mumax hence, safe
------------------------------------------------------
Shear Calculation
Check Trial Depth for one way shear (Along X Axis)
(Shear Plane Parallel to X Axis)
DX = 0.247 m
Shear Force(S) = 72.996 kN
Shear Stress(Tv) = 134.332092 kN/m2
Page 44

Percentage Of Steel(Pt) = 0.1482
As Per IS 456 2000 Clause 40 Table 19
Shear Strength Of Concrete(Tc) = 285.954 kN/m2
Tv< Tc hence, safe
Check Trial Depth for one way shear (Along Z Axis)
(Shear Plane Parallel to Z Axis)
DZ = 0.247 m
Page 45

Percentage Of Steel(Pt) = 0.1482
As Per IS 456 2000 Clause 40 Table 19
Shear Strength Of Concrete(Tc) = 285.954 kN/m2
Tv< Tc hence, safe
Check Trial Depth for two way shear
As Per IS 456 2000 Clause 31.6.3.1
Ks = = 1.000
Page 46

Shear Strength(Tc)= = 1118.0340 kN/m2
Ks x Tc = 1118.0340 kN/m2
Tv<= Ks x Tc hence, safe
------------------------------------------------------
Reinforcement Calculation
Calculation of Maximum Bar Size
Along X Axis
Bar diameter corresponding to max bar size (db) = 16 mm
As Per IS 456 2000 Clause 26.2.1
Development Length(ld) = = 0.721 m
Allowable Length(ldb) = = 0.750 m
ldb >=ld hence, safe
Along Z Axis
Bar diameter corresponding to max bar size(db) = 16 mm
As Per IS 456 2000 Clause 26.2.1
Development Length(ld) = = 0.721 m
Page 47

Allowable Length(ldb) = = 0.850 m
ldb >=ld hence, safe
Bottom Reinforcement Design
Along Z Axis
For moment w.r.t. X Axis (Mx)
As Per IS 456 2000 Clause 26.5.2.1
Page 48

Minimum Area of Steel (Astmin) = 805.200 mm2
Calculated Area of Steel (Ast) = 804.265 mm2
Provided Area of Steel (Ast,Provided) = 805.200 mm2
Astmin<= Ast,Provided Steel area is accepted
Selected bar Size (db) = Ø16
Minimum spacing allowed (Smin) = 56.000 mm
Selected spacing (S) = 300.000 mm
Smin <= S <= Smax and selected bar size < selected maximum bar size...
The reinforcement is accepted.
Based on spacing reinforcement increment; provided reinforcement is
Ø16 @ 300.000 mm o.c.
Along X Axis
Page 49

For moment w.r.t. Z Axis (Mz)
As Per IS 456 2000 Clause 26.5.2.1
Page 50

Minimum spacing allowed (Smin) = = 50.000 mm
Ø16 @ 300.000 mm o.c.
Top Reinforcement Design
Along Z Axis
Page 51

Governing Moment = 7.549 kNm
Minimum spacing allowed (Smin) = 50.000 mm
Page 52

Ø16 @ 300 mm o.c.
Along X Axis
Page 53

Governing Moment = 5.964 kNm
Minimum spacing allowed (Smin) = = 50.000 mm
Ø16 @ 300 mm o.c.
------------------------------------------------------
Page 54

CONCLUSION
The aim of our work was planning, analysis and design of a multi-storeyed, earthquake
resistant residential building. We were able to complete the project in a successful and
efficient manner by considering all the relevant features given as nine chapters.
Planning of this building has been done based on the space requirements suggested by the
prevailing rules stipulated in bye-laws – Guwahati Metropolitan Development Authority,
Govt. of Assam. The design is completely based on relevant Indian Standard Codes. The
analysis has been done with the help of STAAD Pro and the drawings have been made
with the help of AutoCAD. We have completed this Design of structures–IV lab
(CE131811) report to the best of our knowledge and ability.
Page 55

BOOKS
Design of RCC Structures by B. C. Punmia
The concepts and principles of design of various structural members including beams,
columns, stairs, slabs, footings etc. are explained in detail.
Limit State Design of Reinforced Concrete by P. C. Varghese
Reinforced Concrete Limit State Design by Ashok K Jain
Basic & Applied Soil Mechanics by Gopal Ranjan & A. S. R. Rao
Design of R.C.C. Buildings using STAAD PRO V8i with Indian examples by T.S. Sarma.
Page 56

DESIGN CODES
The various IS codes used for the project includes:
IS 456:2000 Indian Standard plain and reinforced concrete code of practice.
IS 456:2000, which is the key code for the design of all reinforced concrete (RC) structures
has added new dimensions to the present scenario and its relevance in designing earthquake-
resistant structures is to be seen in true perspective. IS 456:2000 recommends the use of IS
13920: 1993 and IS 4326: 1993 for detailing of earthquake resistant constructions
IS 1893 (Part I):2002 Indian Standard Criteria for Earthquake Resistant Design of
Structures (5th Revision)
This standard contains provisions that are general in nature and applicable to all structures.
Also, it contains provisions that are specific to buildings only. It covers general principles
and design criteria, combinations, design spectrum, main attributes of buildings, dynamic
analysis, apart from seismic zoning map and seismic coefficients of important towns, map
showing epicenters, map showing tectonic features and lithological map of India.
It is not intended in this standard to lay down regulation so that no structure shall suffer any
damage during earthquake of all magnitudes. It has been endeavored to ensure that as far as,
possible structures are able to respond, without structural damage to shocks of moderate
intensities and without total collapse to shocks of heavy intensities.
IS 875 (Part 2):1987 R 1197 Code of practice for design loads (other than earthquake) for
buildings and structures - Imposed loads
IS 875 (Part 2) deals with various live loads to be considered for design of buildings.
IS 875 (Part3):1987 R 1197Code of practice for design loads (other than earthquake) for
buildings and structures - Wind Loads
IS 875 (Part 3) deals with wind loads to be considered when designing buildings, structures
and components.
USE OF SPECIAL PUBLICATIONS
IS 456 has structural practice handbook SP:16-1980, Design Aids for Reinforced Concrete to
IS:456-1978 has tables and charts that helps in rapidly design simple sections. Even though
the design aid is based on the 1978 code, it continues to be used without revision as there
have been no major changes to Structural Design (Limit State Method), on which the design
aid is based.
Page 57

REPORT ON G+4 RCC HOSTEL BUILDING ANALYSIS AND DESIGN USING STAAD PRO SOFTWARE

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