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CONSTRUCTION
OF OFFICE TABLE AND CHAIRS
ABSTRACT
Office table and
chairs usually come in set of three, and are designed to fit one into another
for convenient storage. Furniture of this soot should be of the highest
quality, attractive in design and capable of standing up to many years in use.
The cost of the wood and the amount of time spent on this project may restrict
you to making one table only and the chairs. The design chiefly makes use of
curved lines for the legs, the base and the lower back rails. The object is to
produce stability with a high proportion of the tables weight gathered near the
base and narrower lines at the level of the tabletop.
Each table and chair is made in four stages, firstly the two identical side
sections are built, these are the fitted with two crosspieces at the top
and one at the bottom. Next, the table and chairs surface ground work is cut
from plywood which fits into groves cut in all four top rails. Finally the top
surface is made up of the wooden block to tiles arranged in a pattern and
fitted into the recess between the plywood and the tops of the table and
chairs.
The table and chairs
frame are assembled with mortise and tern joints. The plywood groundwork is
fitted to the frame using housing joints. The woodblocks are butted together
and guide down into the groundwork. The table and chairs differ mainly in
respect of their size and both the medium and small table and chairs are
constructed to fit in sequence into the image table and chairs with the minimum
of clearance. The only other difference is that the large and medium
table and chairs have narrow front top rails to allow for this clearance, the
smallest table and chairs having the full rails in making one table and chair only,
a full rail is used and one more lower cured crosspiece is added to close of
the opening at the front.
A good quality wood should be used to bring about the best result , such as
afromosia or Burmese teaks, but these hardwoods can be expensive. As an
alternative, agba or Brazilian mahogany can be used. Old oak or mahogany maybe
salvaged from discarded furniture such as old solid wardrobes and bed boards.
This can be an excellent source of cheap tough quality wood but one has to be
persistent in one’s search, schools sometimes get ride of old oak desks and
classroom fittings and woods for construction can be chosen from there.
TABLE
OF CONTENT
CHAPTER
ONE
1.0
INTRODUCTION
CHAPTER
TWO
2.0
LITERATURE
REVIEW
2.1
TYPES OF TABLES AND
CHAIRS
2.2
MATERIAL OF
CONSTRUCTION
2.3
PREVENTIONS
CHAPTER
THREE
3.0
HAND
TOOLS
3.1
MACHINE
TOOLS
CHAPTER
FOUR
4.0
CONSTRUCTIONAL PROCEDURE
CHAPTER
FIVE
5.0
DISCUSSION/
CONCLUSION
5.1
REFERENCE
CHAPTER
ONE
1.0
INTRODUCTION
Construction of
office table chairs is meant to suit the office in which the demand is made.
The project demands that we construct office table, semi executive chairs and
visitors chairs. The materials of construction should be a strong one since it
is a product of wood. It means that strong wood like mahogany or afromasia
should be used for the construction to ensure long lasting of the items
being made.
The working of
wood was practiced in prehistoric times through more recent countries, it has
been on important occupation in its many branches and man skilled in using his
hands to make things from wood has been an honoured way of providing fittings
that ensure confortability even in our hand and offices. With modern
methods of transport timber may be brought from almost any part of the world.
This means that we can now use woods that were unknown to carpenters even only
a few years ago. Many of the traditional and well known woods are still
available, but other have been added to them and it is sometimes difficult to
know the characteristic and suitability of the woods we are being offered. It
was sometimes difficult to identify even the comparatively few woods in general
use up to a few years ago, new it is increasingly difficult, particularly if
you want to use a common name for instance, there are some widely different
species that are all called mahogany. Even prefix in front of it may not be
sufficiently specific. A name like Brazilian mahogany can be used to embrace a
group rather refer to one type. There are scientific names which are essential
if you need to state exactly which wood you mean. But if you use them when
buying wood it is unlikely that the average timber yard man will know what you
are talking about- fortunately, the woods on offer are usually sufficiently
limited in range for each type to be identified by a common name, and the
seller will probably know enough about the characteristic to tell you have a
new wood compares with another you know already- there are many thousands of
different species of tree yielding timber suitable for varies branches of
woodworking, but these available at any particular time or place will be
comparatively few.
Anyone with a little experience can identify some woods by their appearance if
only in very general terms. But even amongst the common woods there are
varieties that show subtle differences when you work them. The only true way to
identify woods is by microscopic examination, and as most of us do not have
facility to do this, we have to take the world of the suppliers.
Trees can be broadly
divided into hardwoods and softwoods. In most cases that is a fair description
of relative hardness, but there are a few softwood harder than some hardness.
Most softwoods come from coniferous, needle leaved trees that keep their leaves
during the writer. Hardwoods have broad leaves and in more severe climates
these tend to be shed during the winter softwood trees are commonest.
In the cooler parts of the world, while many hard woods grow in the tropics,
but there is a considerable range of both varieties in all sorts of climate.
Softwoods grow quickly, maturing in 20 to 50 years. Some of them are
grown to be pulped and made into newsprints. Hardwood may take handreds of
years to grow large enough for conversion to timber. The relative density
of hardwood are so dense that they will not float in water, building or
similar work. In most of air construction works hardwoods are preferred to
softwoods for durability and toughness.
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