Author: haroonkhan
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INTRODUCTION
Essential elements for the human beings to live in a house with a minimum comfort are water supply, drainage arrangements and electrical power supply. Biologically, water is required for the human beings for the satisfactory performance of physiological organisms, as a circulatory fluid, as a carrier of nourishing food and for the removal of products…
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DISTEMPERING
Distempers are available both in powder (dry distempers) or paste forms (oil bound distempers). Dry distempers consist of 90–95% of whiting and 5–10% of glue. Oil bound distempers are made by grinding pigments with a medium composed of an emulsion of a drying oil in water. Linseed or tung oil is used. Vehicle for distempers…
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WHITE/COLOUR WASHING
The building units other than wood, aluminium and iron, other structurally finished surfaces are given a final finish to improve the appearance by using white/colour washing or distempering. Pure lime or fat lime is slaked first and the required quantity of water is added to make the solution. The solution should have a milky consistency…
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Application of Coats
The surface of wood work is then stopped, that is done using hot weak glue size. This fill enables the pores get filled. After the surface is dried it is once again be rubbed and smoothened by sand paper. Over this smoothened surface varnish is applied in thin coats. Additional required coats are given once…
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Preparation of Surfaces
The roughness of wooden surfaces is removed using sand paper of suitable grades. Then fine grained sand paper is used to smoothen the surface. The smoothened surface is cleared thoroughly before the application of varnish. Process of treating knots is done as done in painting.
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VARNISHING
Varnish is primarily used only for wood work. For decoration purposes it is also used on stone facings.
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Application of Coats
In wood work a primary coating is applied to the entire surface to be treated. This gives a hard and opaque covering. After drying the surface is smoothened by rubbing with pumice stone or sand paper. Successive coats with the chosen paint is given one after the other, after the previous coat has dried. Generally…
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Preparation of Surfaces
It is the process by which the surface is cleaned to take an optimum paint. In wood work knots should be avoided as there is a possibility of resinous material coming out of them. If knots are inevitable they are property smoothened by paint knoting or lime knoting application or hot read lead. In case…
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PAINTING
Paints are applied as a final finish to all surfaces such as walls, ceilings, wood work, metal work, etc. Paints are classified based on different norms, viz., based on media, based on utilization, etc. Some of the common paints in use are: oil paints, cement paints, synthetic rubber paints and emulsion paints.
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Methods of Pointing
Following procedure is followed to perform the pointing work: 26.3.3 Types of Pointing Different types of pointing are in use. The choice of a particular type of pointing depends on the type of masonry and the effect required. Usual types of pointing are explained below. 1. Flush Pointing This type of pointing is formed by…