comparative analysis for economy between steel slab base and gusseted base

66 Pages·2017·4.84 MB·English

Project Part -B Report
On
COMPARATIVE ANALYSIS FOR ECONOMY
BETWEEN STEEL SLAB BASE AND GUSSETED
BASE

Submitted in partial fulfillment of the requirements
for the degree of

BACHELOR OF ENGINEERING
in
CIVIL ENGINEERING
By
Mr. Abdul Mobin Abdul Khalik Ansari (13CE04)
Mr. Asjad Fazal Balbale (13CE11)
Mr. Shubham Santosh Ghadigaonkar (13CE14)
Mr. Vaishnav Anant Goregaonkar (13CE15)

Under the guidance of Prof. Hawelikar S. C.

Department of Civil engineering
Anjuman-I-Islam’s Kalsekar Technical Campus
Thana Naka, Khandagaon,New Mumbai 410206,
2016-2017
University Of Mumbai
CERTIFICATE

This is to certify that Mr. Abdul Mobin Abdul Khalik Ansari (13CE04), Mr.
Asjad Fazal Balbale (13CE11), Mr. Shubham Santosh Ghadigaonkar (13CE14) and Mr.
Vaishnav Anant Goregaonkar (13CE15) has satisfactorily completed and delivered a
Project-B seminar report entitled, “Comparative Analysis for Economy Between Steel
Slab Base and Gusseted Base” in partial fulfillment for the completion of the B.E. in Civil
Engineering Course conducted by the University of Mumbai in Anjuman-I-Islam’s Kalsekar
Technical Campus, New Panvel, Navi Mumbai, during the academic year 2016-17.

Prof. Hawelikar S. C.
(Guide)

Dr. R. B. Magar Dr. Abdul Razak Honnutagi
(Head of Department) (Director)

i
Approval for B. E. Project Part-B

This B. E. Project Part-B entitled “Comparative Analysis for Economy Between
Steel Slab Base and Gusseted Base” by Mr. Abdul Mobin Abdul Khalik Ansari (13CE04),
Mr.Asjad Fazal Balbale (13CE11), Mr. Shubham Santosh Ghadigaonkar (13CE14) and Mr.
Vaishnav Anant Goregaonkar (13CE15) is approved for the degree of Bachelor of
Engineering in Civil Engineering.

Examiners

1. ____________________

2. ____________________

Date:
Place: New Panvel

ii
Declaration

We hereby declare that this written submission entitled “Comparative Analysis for
Economy Between Steel Slab Base and Gusseted Base” represents my ideas in my own
words and where other ideas or words have been included, I have adequately cited and
referenced the original sources. I also declare that I have adhered to all principles of academic
honesty and integrity and have not misrepresented or fabricated or falsified any data/fact in
my submission. I understand that any violation of the above will be cause for disciplinary
action by the Institute and can also evoke penal action from the sources which have thus not
been properly cited or from whom proper permission has not been taken when needed

Place: New Panvel Mr. Abdul Mobin Abdul Khalik Ansari
Date Mr. Asjad Fazal Balbale
Mr. Shubham Santosh Ghadigaonkar
Mr. Vaishnav Anant Goregaonkar

iii
Acknowledgment

It is our privilege to express our sincerest regards to our project Guide, Prof.
Hawelikar S. C., for their valuable inputs, able guidance, encouragement, whole-hearted
cooperation and constructive criticism throughout the duration of our project.
We deeply express our sincere thanks to our Head of Department Dr. R. B. Magar and
our Director Dr. Abdul Razak Honnutagi for encouraging and allowing us to present the
project on the topic „Comparative Analysis for Economy Between Steel Slab Base and
Gusseted Base‟ in partial fulfillment of the requirements leading to the award of Bachelor of
Engineering degree.
We take this opportunity to thank all our Professors and non-teaching staff who have
directly or indirectly helped our project, we pay our respects and love to our parents and all
other family members for their love and encouragement throughout our career. Last but not
the least we express our thanks to our friends for their cooperation and support.
Mr. Abdul Mobin Abdul Khalik Ansari
Mr. Asjad Fazal Balbale
Mr. Shubham Santosh Ghadigaonkar
Mr. Vaishnav Anant Goregaonkar

(Semester-VIII, B.E. Civil)
AIKTC – New Panvel,
Navi Mumbai.

iv
Abstract

Steel Column Bases are widely used in steel construction for relatively all columns.
Column bases are often used in steel buildings and providing economical solutions in cases of
large and heavy loads or in other words steel column bases varies in its thickness under
various loading conditions. Depending upon the loading conditions, the steel column bases
are classified as slab base and gusseted slab base. Since these sections often provide
sufficient flexural stiffness to resist bending of base plate and settlement of the column
without any extra provision. However, both the column bases are proved to be economical
based on the loading conditions which is included in this study. The ultimate capacity of
column bases mainly depends on the local behavior of the components, the global behavior of
the column as well as the internal forces in the connecting elements. Mainly while
considering designing of both column bases the designing procedure is same and it’s
observed that the selection of the column base plate depends upon the intensity of load,
thickness of the base plate and economy.
As per structure requirement as engineer we have to select any one of these two i.e.
either gusseted base or slab base. So our aim was narrowed towards the study of behavior of
these two column bases on various combinations of loading and thickness and accordingly
the cost of the bases on stability criterion as per IS800:2007. Also we have predicted the
thickness of bases on the basis of amount of loading. From the results and conclusions thus
obtained, we have tried to derive the suitability of the bases from economic point of view.

v
Table of contents

Sr. Page
Content
No. No.
* Front Page
* Certificate
* Approval for B. E. Project Part-B
* Declaration
* Acknowledgment
* Abstract
1. Introduction 1
1.1 General 1
1.2 Slab base 2
1.3 Gusseted base 4
2. Literature review 6
3. Objective of the study 15
4. Methodology 16
4.1 Approach 16
4.2 MS Office Microsoft Excel 16
4.2.1 What is Microsoft excel? 16
4.2.2 Why it is being used? 17
4.2.3 What are its advantages? 17
4.3 Assumption for design 17
4.4 Design procedure 18
4.5 Sequence of Project Completion 18
4.6 Design steps 19
5. Results and Discussion 24
5.1 Square Slab Base 25
vi
5.2 Rectangle Slab Base 28
5.3 H-Shaped Slab Base 31
5.4 Gusseted Base 34
5.5 Comparison for thickness for base and gusset plates for ISHB 37
5.6 Comparison for thickness for base and gusset plates for ISSC 39
5.7 Comparison for thickness for base and gusset plates for ISWB 41
5.8 Snapshot of excel sheet 43
6 Conclusion 44
Future Scope 46
References 47
Publications 50

vii
List of Illustrations

Sr. Page
Content
No. No.
1.1 Slab Bases 2
1.2 Types of Slab Bases 3
1.3 Bending of bases 3
1.4 Gusset base 4
5.1 Load vs. thickness for Square base 27
5.2 Load vs. thickness for Rectangle base 30
5.3 Load vs. thickness for H-shaped base 33
5.4 Load vs. thickness for Gusseted base 36
5.5 Comparison for thickness for base and gusset plates for ISHB 37
5.6 Comparison for thickness for base and gusset plates for ISSC 39
5.7 Comparison for thickness for base and gusset plates for ISWB 41
5.8 Snapshot of Excel sheet 43

viii
Chapter 1

Introduction

1.1 General

Column bases are structural elements used in the design of steel structures to transfer
the column load to the footings. Steel columns are normally supported over concrete blocks.
However, when the loads supported by these columns, are large and the bearing pressure of
concrete from below is insufficient to resist the loads, they may fail. Therefore, it is a normal
practice to distribute the column loads to steel base plates which are placed over these
concrete blocks.
In addition to transferring safely the column loads to the concrete foundation blocks, a
base plate also maintains the alignment of column in plan, verticality of the column and
controls the column and frame deflections. The column load is spread over large area on
concrete blocks. The intensity of bearing pressure on concrete is kept within the maximum
permissible bearing pressure.
In the column bases, intensity of pressure on concrete block is assumed to be uniform.
The column bases shall be of adequate strength, stiffness and area to spread the load upon the
concrete, masonry, other foundation or other supports without exceeding the allowable stress
on such foundation under any combination of the load and bending moments.
1