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NOTATION

ANALYSIS AND DESIGN OF COMMERCIAL BUILDING WITH FLAT SLAB BATCHLOR OF TECHNOLOGY

IN

CIVIL ENGINEERING

By

RAHIL ABRAR (12D95A0117 ) SAYED ZAHED (11D91A01A5 )

MOHD FARHAN (11D91A0164 )

DEPARTMENT OF CIVIL ENGINEERING

AURORAS SCIENTIFIC, TECHOLOGICAL & RESEARCH ACADEMYBandlaguda, near Chandrayanagutta, Hyderabad.

APRIL-2015ANALYSIS AND DESIGN OF COMMERCIAL BUILDING WITH FLAT SLAB A MAIN PROJECT REPORT

IN PARTIAL FULFILLMENT OF

THE REQUIREMENTS FOR THE AWARD OF DEGREE FOR

BACHLOR OF TECHNOLOGY

IN

CIVIL ENGINEERING

By

RAHIL ABRAR (12D95A0117 )

DEPARTMENT OF CIVIL ENGINEERING

AURORAS SCIENTIFIC, TECHOLOGICAL & RESEARCH ACADEMYBandlaguda, near Chandrayanagutta, Hyderabad.

APRIL-2015AURORAS SCIENTIFIC, TECHOLOGICAL & RESEARCH ACADEMYBandlaguda, near Chandrayanagutta, Hyderabad.

Department of Civil Engineering

CERTIFICATECertified that the project work entitled ANALYSIS AND DESIGN OF COMMERCIAL BUILDING WITH FLAT SLAB carried out by Mr. RAHIL ABRAR, HT. No 12D95A0117, a bonafide student of IV year in partial fulfillment for the award ofBachelor of TechnologyinCivil Engineeringof the AURORAS SCIENTIFIC, TECHOLOGICAL & RESEARCH ACADEMY during the year Academic year 2014-15. The project report has been approved as it satisfies the academic requirements in respect of Project work prescribed for the said Degree.

Name & Signature of the internal Guide Name & Signature of the HOD

G.VenkataRatnam (M.E)

External Viva:

Name and Signature of the examinerswith date

AURORAS SCIENTIFIC, TECHOLOGICAL & RESEARCH ACADEMYBandlaguda, near Chandrayanagutta, Hyderabad.

Department of Civil Engineering

DECLARATION BY THE STUDENT

I, RAHIL ABRAR bearing Hall Ticket No.12D95A0117, hereby declare that the project report entitled ANALYSIS AND DESIGN OF COMMERCIAL BUILDING WITH FLAT SLAB under the guidance of Mr. G.VenkataRatnam, Department of Civil Engineering, Auroras Scientific, Technological and Research Academy, Bandlaguda is submitted in partial fulfillment of the requirements for the award of the degree of B.Tech in Civil Engineering.This is a record of bonafide work carried out by me and the results embodied in this project have not been reproduced or copied from any source. The results embodied in this project report have not been submitted to any other university or institute for the award of any other degree or diploma.

Name: RAHIL ABRAR, H.T.No.: 12D95A0117.

INDEXiACKNOWLEDGMENT

iiABSTRACT

vNOTATIONS

viiLIST OF FIGURES

ixLIST OF TABLES

1CHAPTER 1

2INTRODUCTION

21.1 General

21.2 Flat Slab

31.2.1 Basic Definition of Flat Slab

31.3 Components of Flat Slabs

51.4 Advantages & Disadvantages

51.4.1 Advantages

61.4.2 Disadvantages:

71.5 Key Messages:

71.6 Proprietary Punching Shear Reinforcement Systems:

81.7 Objective

81.8 Scope of Work

9CHAPTER 2

10MODELLING AND ANALYSIS

102.1 Materials and Properties:

102.1.1 Building Materials:

102.2 Loads:

102.2.1 Dead loads & Live loads:

112.3 Load Combination:

16CHAPTER-3

17DESIGN PHILOSOPHIES

173.1 Methods of Design:

173.1.1 Working Stress Method:

183.1.2 Ultimate Load Method:

183.1.3 Limit State Design:

20CHAPTER - 4

21STRUCTURAL PLANNING

214.1 Structural Planning Of Reinforced Concrete Framed Building:

214.1.1 Column Positions

214.1.2 Orientation of columns:

234.1.3 Beam Locations

244.2 My Project Plans

34CHAPTER - 5

35LOADINGS

355.1 Load Conditions and Structural System Response:

355.1.1 Building Loads Categorized by Orientation:

355.1.2 Horizontal (Lateral) Loads:

375.2 LOAD CALCULATIONS

375.2.1 INTRODUCTION

425.3 Assumptions

43Table 1 : Density of Materials Used

43Table 2 : Design Constants

435.4 Assumptions Regarding Design:

445.4.1 Assumptions on design:

445.5 Data Collection

45CHAPTER-6

46DESIGNING

466.1 Flat Slab

536.2 Design of Beams

576.2.1 Members - B31, B32 & B39 (from ETABS)

666.3 Column

746.5 Footing

776.6 Stair Case

84CHAPTER-7

85CONCLUSIONS

86REFERENCES

ACKNOWLEDGMENT

I am very pleased to present this main project work. This period of my student life has been truly rewarding a number of people were of immense help to me during the course of my project work and preparation of this book.

First, I wish to thank God Almighty who created heavens and earth, who helped me in completing this project.

I thank my parents, encouraged me all along to complete this big task and to my friends who has given good support along the way.

I would like to thank all my departments lecturers, Auroras Scientific, Technological and Research Academy, Bandlaguda, my project internal guide, for his guidance and help. His insight during the course of my research and regular guidance were invaluable to me.

And also I thank Sri G.Venkata Ratnam, Head of the Department, Civil Engineering, Auroras Scientific, Technological and Research Academy, Bandlaguda, for his encouragement and cooperation throughout the project.

I would also thank Smt. Ch.Srilatha, Principal of our college, for extending his help.

Rahil AbrarABSTRACT

With the increase in population and development of civilization, the demand for HOUSING is increasing at a peak rate. Especially in towns due to rapid industrialization, the demand is very high. Adapting the construction of Multi-storied Building not only matches with demand but also decreases the price of the single house.

Hence an Engineer to be knowledgeable about the planning and designing of such Multi-storied Buildings. Advancements of computer packages have given many tools to the designer towards achieving the best and accuracy in their work.

The aim of our project is to design a G+13 building with flat slabs instead of conventional slab. It is designed by using M25 grade concrete and Fe415 steel. The dead load, live load and seismic load are applied and the design for beams, columns, footing is obtained. Analysis & Design of the building with flat slab is done by using ETABS software.

PLANNINGPlanning is the first step of project management philosophy of planning, organizing and controlling the execution of the projects. Project planning and project scheduling is two separate and distinct function of the project management.

At its inception a building normally begins as an inspiration or an idea in someones mind. Once the person or the client has a clear concept of what he/she wants, in order for that thought to be a reality, the idea must then be converted into a Construction Project. All Construction Projects have 4 major phases: Initiation, Planning & Design, Implementation and Completion.

TYPES:

There are several types of project planning. The three major types ofconstruction project planning are:

1.Strategic planning:This involves the high-level selection of the project objectives and it is done by the owners corporate planners,

2.Operational planning:This involves the detailed planning required to meet the strategic objectives and it is done by construction teams. They ask certain questions before making operational plan for the project,

3.Scheduling:This puts the detailed operational plan on a time scale set by the strategic objectives.DESIGN

Designis the creation of a plan or convention for the construction of an object or a system so designing can be done manually or by software such as Etabs and Staadpro.The components to design are foundation, plinth beam, columns, beams, slab and staircases.

COMMERCIAL BUILDING

Acommercial buildingis abuildingthat is used for commercialuse. Such as officebuildings, banks, hotels, super market, shopping mall, restaurant, warehouses, or retail

In our project, a G+13 Structure with flat slab is analyzed and designed individually for Gravity loads Lateral loads. The complete process of Modeling, Analysis of whole structure is carried by using ETABS Packages and the designs of typical structural elements (beam, column, and slab) are done by manually.

Punching shear reinforcement is an efficient method to increase not only the strength but also the deformation capacity of flat slabs supported by columns. Especially, the increase in deformation capacity is desired so that the load can be distributed to other supports preventing a total collapse of the structure in the case of the occurrence of a local failure

NOTATIONS

Aarea

bbreadth of beam ,shorter dimension of a rectangular column

bef effective width of slab

br effective width of flange

bw breadth of web or rib

Doverall depth of beam or slab or diameter of column, dimension of rectangular column in the direction under consideration

Df thickness of flange/slab in flanged beam

d effective depth of beam or slab

d1 depth of compression reinforcement from the highly compressed face

DL dead load

e eccent