PRAFACE
Based the fact, for humans
quest to belted and secure things he uses and have them arranged in place
without being transfer, like the files tea books, important to man for future
wage and academic excel.
To this end, in which this
written articles need to be presented, we embarked on the consultation and
research to being out a fornicated type of modern lockable bookshelf with which
documents can be preserved and packed.
We involved
ourselves in the necessary tedinealities for the project to the a reality buy
sketching, drawing to scale, selection of a particular drawn design, fabrication and finally joint the component
parts to what is called modern lockable bookshelf.
DEDICATION
Thanks be to God Almighty the
father of heaven and Earth for his divine favour and grace wheat is sufficient
to us.
To our dearly beloved parents /
guidance for their love and perseverance to have us being educated.
ACKNOWLEDGEMENT
Our acknowledgement goes to all
the people who from the onset helped us in being this project to a reality.
Right from the workshop to the people who gave their advice, even the typist.
But with special regards to our supervisor Engr. Muo.
ABSTRACT
The purpose of this project
which is the design and fabrication of lockable metal shelf is to keep the
files, text books, documents etc. in a safe place for future we by the
institution and also it will render a maximum service to any office where it
will be kept. The primary and second any delta used for the construction of
this project were given to us by our supervisor. Engr. Mrs. Muo. This idea
helped a lot in making this project a reality.
TABLE OF CONTENT
Little page
Letter of
transmittal
Letter of
release
Approval page
Signature page
Preface
Acknowledgement
Abstract
Table of
content
CHAPTER ONE
1.1
Introduction
1.2
Material selection
1.3
Description of the metal shelf
1.4
The base /base top.
1.5
The sides
1.6
The back
1.7
Partitions for locks
1.8
Rollers
1.9
The doors
1.10
The stopper
CHAPTER TWO
2.1
Constructional choice and method
2.2
Fabrication procedure
2.3
Material selection
CHAPTER THREE
3.1
Design analysis
3.2
Assemble
3.3
Pakiting.
CHAPTER FOUR
4.1
Sequence of operational,
CHAPTER FIVE
5.1
Cost evaluation
5.2
Material cost
5.3
Labour cost
5.4
Cost project report
5.5
Guidelines on usage /precaution
5.6
Conclusion
Reference:
CHAPTER ONE
1.1
INRODUCTION
A metallic lockable bookshelf is a rectangular
piece metal device and fabricated for the main purpose of artery keeping of
book, files audio and vides cassette in homes, offices and libraries etc. as well
as retrieval and consultation when needed.
On starting of
this project a lot of consideration was done based on the workability of such
project, the consideration of material available as well as they choice of the
advantages of the material later stetted including research on the regimen
properties of the material with at most carefulness if such material chosed is
combustible, environmental finally or Harvard an resistance to insects attack
like metals instead f wood. Strenuous become the consideration to make the
project quite affordable, this in the area of cost of production which was over
comer by adopting certain amendment with the need to achieving the shelf in
such a way that it become a modern lockable bookshelf which can contain quite
number of books and files. It was felted with rollers stands and stoppers for
stability at any kept point and easy movement and solidity welded
1.2 DESCRIPTION LOCKABLE
BOOKSHELF OF THE MODERN
The modern
lockable bookshelf as shown in fig 1.1
Was constructed using 20mm
square pipe and gauge 15mm mild steel street/plate and comprises of the totting
parts /components:
i.
Base
ii.
Side
iii.
Partitions or rocks.
iv.
Roller Stands
v.
The doors
vi.
Locks
vii.
Stopper
viii.
Book
MATERAL SELECTION
In everyday
work, an engineer comes across certain material like steel grides. Angle non
circular bars, wrought iron, Aluminum etc. which are to be used in fabrication of projects. While selecting a
suite as ability t resist stress (tensile stress and comprehensive stress),
strewn, elastic limit etc under the external force. It has been observed that
under the influence these forces, the material is first deterred and made an
the forces and their sheet along with some suitable precutting measures to
determine the strength of material and to have a better quality product. As the
case may be, this knowledge is very essential for an engineer to enable him
design and fabricate his project.
This table below shows the
value of elasticity of material under a tensile force.
S/No
Materials
Moderns of (E) in gaine gae/mm2
& km/ mm2
1
Steel
200 to 220
2
Wrought iron
190 to 200
3
Cast iron
100 to 160
4
Copper
90 to 110
5
brass
80 to 90
6
Aluminum
60 to 80
7
Limber
w
With this
table above, the wrought iron is been selected in fabrication of our project,
because it can with sand up to 190 to 200 kn /mm2 of tensile forces.
CONVERSION
I Ich =25.4mm
12inhces =304.8mm
12 inches =304.8 =1 foot
1.2.1 THE BASE / BASE TOP.
The base is
made up of that sheet properly reinforced with 20mm square pope at all four
rectangular sides of the rollers and stopper. The quality of this enforcement
was bultress by good welding job and tilling eared out. He width is 70mm. The
base top has no roller tiller (. Fig 1B)
1.2.2.
THE SIDES
The
side as shown in fig is of a mild steel plate sheet of gauge 20, having a
height and width dimensions of 10mm and 370mm it was properly reinforced with a
for (20mm) square pope after framing and bending of the sheet at an angle of go
which serve a propose of safety handling. The welding of this side was done
with guage 12 mild steed. Doctored to show more stability or solidity knowing
fully well that it will help in carrying the locks / partitions.(fig 1 A)
PACH OR PARTITIONS. (Fig 1E)
BASE.
(Fig 1B)
1.2.3 THE BACK
The back of
the modern lockable bookshelf was of gauge 15mm mild steel which was formed as
was bent at an angle 90o with the correct exact marking out of 910mm
as length, 770mm as width. The essential of the back being to serve a cover and
support to carry the locks, based on this the back was reinforced and welded in
place/position see fig ld.
1.2.4 PARTITIONS OR LOCKS.
The locks (partition) used were of metal
sheet of the gauge 15mm. Being the place where the books will be kept the
folding of by an angle 900 was done and welded in the square pope with
at most aim of smoothness and easy handing of the book in place. The shape is
rectangular length 765mm, 300mm width positioned at a distance of 300mm from
one lock to another. The lock was welded inside the shelf properly in other to
gain and maintain rigidity see fig. I.e.
1808mm
BACK
1.2.5
ROLLERS
The roller
fitted to the modern lockable shelf is oracular in shape. The important of the
rollers is to enable easy movement and it carries the shelf and also its entire
load based in this the rollers was fitted in the shelf by welding to enable
strong grip and avoid slip paring of the roller (fig 1f).
1.2.6. THE DOOR
The
door of the shelf is of 370mm width and 850mm length made from metal sheets
into shape by an angle of 900 and the welding reinforcement and
rigidity of the door by the used of square pope the door was in two joined to
the shelf by 2 inches hinges to the shelf (i.e. 25mm inches) (see fig ig)
ROLLER
LOCK AND KEY
1.2.7 LOCK
The lock wed
was bought in the market, it was sea red to the doors by welding and positioned
to the doors to achieve locking easily and security when closed.
1.2.8 STOPPER
The stopper is
a mutable constructed vice placed at the base to ensure not dritking or
movement of the shelf when kept at a place as shown on fig.
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