ABSTRACT
In
our society today reading and writing has taken its roll as a way of measuring
human knowledge. Knowledge could only be
obtain successively by the use of books for research but unfortunately because
of hard time, books have because very expensive.
This
has called for preservation of books already purchased, whether in the public
library school or in the house hold so that it can use for future
reference. These could only be done by
stocking books systematically in a bookshelf where by it can be free from rat,
insects and other thing that could destroy books.
Our
own contribution towards this development is the design and manufacture of a
bookshelf that will be economically cheap and at the same time meet up its
demands.
Bookshelf
could be made with metals or wood and they could be attached against the wall
or they could be made standing on the floor.
Our bookshelf shall be of the metal type standing on the floor.
TABLE
OF CONTENT
Title page
Transmittal
Release
Signature
Approval page
Dedication
Acknowledgement
Abstract
Table of content
CHAPTER ONE
1.1
Introduction
1.2
Description
of the metal bookshelf
CHAPTER TWO
2.1
Design
analysis
2.2
Design
analysis
2.3
Capacity
of bookshelf
CHAPTER THREE
3.1
Material
selection
3.2
Tools/Equipment
3.3
Construction
3.4
Sequences
of operation
CHAPTER FOUR
4.1
Cost
analysis
CHAPTER FIVE
5.1
Conclusion
5.2
Guidelines
on usage
5.3
Recommendation
REFERENCE
CHAPTER
ONE
1.1
INTRODUCTION
A
bookshelf is a device with partitions use for the purpose of self-guarding
books and files in offices, libraries and at homes.
A
bookshelf can be wooden, metal or glass.
They could also be design in such a way that they could be dismountable
or undismountable. In our project, we
decided to design and fabricate on undismountable metallic bookshelf.
Amoung
they bookshelves, the undismountable metallic bookshelf has the longest lift
span because of its rigidity, quantity of material and it ability to with stand
heavy loads. In other words, the constant
loosening and coupling of the component parts which lead to the weakness of the
bolt and nut, thus subject the shelf to vibration.
Our
project being the undismountable bookshelf was fabricated with variety of
material. The types of materials involved
are mild steel square pipes (25mm x 25mm) mild steel sheet metal, metals nets
(wire gauze) etc. in this, the square
pipes were used in the fabrication of the frame work while the mild steel
sheets were use to cover the partitions and outside bodies of the shelf and the
metal nets (wire gauze) where used in the creating of the two doors.
The
essence of creating steel fame work with pipes is for it to withstand the
stress that will be develop due to the weight of they material and loads or
each partition.
In
fabrication, the frame was first erected before covering with the mild steel
sheet. The mass and volume of the book
to be contained by each partition were considered before they were erected, so
certain experiment were carried out which will be discusses in detail in this
report.
1.2
DESCRIPTION OF THE METAL BOOK SHELF
The
metal bookshelf as shown in fig.1.1 is made up of the following parts and
components.
(i)
The
frame work
(ii)
The
side
(iii)
The
back
(iv)
The
door
(v)
The
top
(vi)
The
stand
(vii)
The
partitions
THE FRAME
The
frame shown in fig.1.2 is the skeleton of the whole shelf, it is made of 25mm
square pipe and 25mm (1) by 50mm (2) rectangle pipe. The frame was first erected together by mean
of welding before the sheet was covered at the back, side, top and the
partitions.
The
frame was design to withstand the stress that will be develop on it due to the
weight of sheet metal and load on each partition.
THE SIDE
The
side as shown in fig 1.3 is made up of a mild steel of 1.0mm thick with height
1473mm and length 501mm. It was welded
to the frame (at an angle 900).
THE DOOR
The
metal bookshelf has two doors, the left an d right doors which are covered with
metal net or wire gauze respectively shown in fig 1.5. the doors was constructed with 25mm (1)
square pipe and covered with wire gauze to allows the user to view inside the
shelf, to know if the particular book or file he/she is searching for is in
that particular bookshelf.
THE BACK
The
back as shown in fig 1.4 is made or mild steel sheet of thickness 1.0mm, 1473mm
by height and 122nmm in length and was also welded diagonally to the frame (at
an angle 90). 
THE TOP OR PLANE
The
top as shown in fig 1.6 is made up of a mild steel sheet of thickness 1.0mm and
1224mm length by 501mm width and it is also welded diagonally to the frame.
(i.e. at angle 900)
THE STAND
The
stand were made from a rectangle pipe and a square pipe, that is, the two back
stand were made from square pipe while the two front stands were made from the
rectangular pipe. This stand were
extended from the frame work to enable stronger gripe, avoid bending, breaking
and also to avoid slip.
The
stand add to the height of the metal bookshelf to total of 1525mm in height and
there are four stands under the bookshelf.
THE PARTRITIONS
The
partitions were design to be able to contain large number of books.
They
are measured 355mm by height, 1222mm by length and 470mm by breath. The material used for the partitions was mild
steel plate of 1.2mm thick was welded to the frame work of the partitions.
The
volume of the partition
= l x b x h
= 1222 x 470 x 355
= 203, 890, 700mm
AREA
OF PARTITION
= 2(lb + bh + lh)
= 2(1222 x 470) + (470 x 355) +
(1222 x 355)
=
1,749, 340mm.
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