Business Management

Author: Haroon Khalil

  • Uses of Asbestos

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    Haroon Khalil
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    Following are some of the uses of asbestos:

  • Properties of Asbestos

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    Haroon Khalil
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    Following are the properties of asbestos:

  • Types of Asbestos

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    Haroon Khalil
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    Natural fibre of asbestos belongs to two groups, viz., those which are readily active with acid (i.e., non-acid-resistant) and others that are acid-resistant. The first group primarily consists of chrysolite asbestos which is used for industrial purposes. The second group comprises of amonite and crocidolite asbestos. The second group is not recommended for commercial use…

  • ASBESTOS

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    Haroon Khalil
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    Asbestos is a naturally occurring fibrous material. It is a silicate of calcium and magnesium and contains a small amount of iron oxide and alumina. The original source of asbestos was the mineral fibrous mineral actinolite.

  • INTRODUCTION

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    Haroon Khalil
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    Apart from the main building materials such as stone, brick, lime, cement, mortar, concrete, wood, etc., there are different other materials which are used fully or partly as a building construction material. The other materials which may be of concern for building construction are asbestos, fly ash, gypsum plaster, bituminous materials, glass, plastics and other…

  • Wood Oiling

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    Haroon Khalil
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    Woodwork not exposed to weather is generally provided with wood oiling as it is cheaper. Further, oiling of woodwork is done to increase the durability and also to improve the appearance of the surface. Linseed oil or sweet oil is used. Linseed oiling consists of a mixture obtained by heating three parts of double-boiled linseed…

  • Waxing or Wax Polishing

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    Haroon Khalil
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    To improve the elegance and at the same time to protect undercoats, wax polishing is done on varnished surfaces. Wax polishing presents a highly pleasing lustre. Wax polish is prepared by mixing bees-wax with linseed oil, turpentine and varnish in the ratio 2:1½:1:½, respectively, by weight. For preparing this, bees-wax is first melted or dissolved…

  • Coal Tarring

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    Haroon Khalil
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    For preservative purposes, coal tar is applied to wood work or iron work. The tarred surfaces can further be treated by varnishing or painting. The mixture is prepared by adding about 200 gm of unslaked lime for every litre of tar and then heated till it starts boiling. The hot mixture is thinned by adding…

  • Wall Tiling

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    Haroon Khalil
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    Wall tiling is the process of lining or finishing the walls with special tiles up to a certain height. In general, the height varies from 60 to 120 cm above the floor level or in some cases up to the ceiling. Particularly, wall tiling is done in kitchen, bathrooms, W.Cs, passages, fire places, staircase walls,…

  • Wallpapering

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    Haroon Khalil
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    Wallpapers of a certain design are used for developing the aesthetic values of interior walls and ceilings. They may be exclusively of paper or combined with other materials. The papers used for papering are: pulp paper, satin paper or flock paper. Pulp paper is the most commonly used type. Satin paper is easily maintained by…