CONSTRUCTION OF STEEL SHELF
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ABSTRACT
In the construction of steel shelves, it could be made with metal or wood but one is fabricated with mild steel.
The undismountable steel shelf which has compartment and partitions under went many processes namely the drawing and the dimensioning of the proposed steel shelf, market surveying and buying of the needed materials, the marketing out and cutting of the materials, welding, smoothing and filling of the work then finally the painting.
Actually, the purpose is to produce fabricated steel shelf that will be economically cheep and at the same time meet up with standard in the market.
CHAPTER ONE
Introduction 1
Description of metal shelf 2
CHAPTER TWO
Literature Review 8
Analysis 18
Determine use of support 23
CHAPTER THREE
Construction methodology 24
CHAPTER FOUR
Calculation and cost evaluation 27
CHAPTER FIVE
Discussion material selection 30
CHAPTER SIX
Conclusion 35
Recommendation
Reference 38
CHAPTER ONE
- INTRODUCTION
Steel shelf is an invention with compartments and partitions where files and books are packed in offices, libraries and even homes. Shelf could be made with different types of material such as steel, wood, and some kinds of metals and could also be dismountable and undismountable. In our project, we decided to design and fabricate an undismountable metallic steel shelf considering certain factors were considered.
An undismountable metallic steel shelf, have a longer life span and serves is purposes better than a wooden shelf. Also, a metallic steel shelf cannot be attacked by termites or insects and as such protects books and documents kept in it better than the wooden shelf would have donhe.
Nevertheless, the need for preservation of books to enhance researches and studies purpose has brought about the construction of steel shelf and also to enhance systematic arrangement of books for easy reference. In the fabrication, the frame was first erected before making the sides and the partitions with the mild steel material. The mass and volume of the books to be contained by the partitions were considered before they were erected. So, certain experiments were carried out which will be further discussed.
- DESCRIPTION OF THE METALLIC SHELF
This description of the metallic shelf is as shown in fig. 1. It is made up of the following parts.
The sides
The back
The partitions
The framework
The sides
The sides of the steel shelf are as shown in fig 1a. It is made up of the square pipe frame and the mild steel plate material welded to it. Each part is specially designed to act as the support in carrying the load under any stree. The load displayed on the system. The sides are tacked at 900 to each other, giving the system a more rigid framework. The sides measure 1.67m by 30.6m and 0.001m thick. They are welded to frame at an angle of 900 to each other. This creates a more flat and straight cover.
The back
The back of the steel case is shown in fig 1b. It is made up of the same mild steel plates as in the sides. It is welded to the square pipe frame and the sides at an angle of 900. Its measurement is 1.679m high by 1.0709m widths and a thickness of 0.001m.
Since the back serves as a sort of cover, a metallic sheet with a higher thickness was chosen for it so that it can withstand rust and corrosion of any intensity.
The petitions
Our metallic shelf was designed to have four compartments so as to be able to contain larger number of books (see fig 1c). It measures 1.0709m x 0.3009m. The material used for the compartment is a 0.001m thick mild steel plate. This is so be each compartment is designed to carry a maximum load of 50kg at a time (experimental procedure/ calculations to be shown later). This compartment is welded to the square bar frame side and back of the metallic shelf making a more rigid framework out of the system. The volume of partition and the area is calculated below.