Seasoning of Timber Revised by A. LAMOND and J. HARTLEY "Free" and "Bound" moisture Expressed as a formula: Fibre saturation point As the free moisture leaves the cell cavity, it will eventually become empty, leaving the cell wall still saturated. Manufacturing of Artificial Stone. The popular method of artificial seasoning is kiln seasoning. Natural / Air Seasoning Artificial/ Kiln seasoning 3. Natural Seasoning; Artificial Seasoning; Lets discuss both methods one by one. Also read: What Is Formwork Failure | Causes of Formwork Failure. 1.Boiling. 7. So much so that repeated inquiries for … The timber is thus boiled with water for about three to four hours. No. Natural Seasoning. Moisture content can be reduced as per requirements. A newly fell tree contains water up to 50% of its dry weight. In artificial seasoning, the drying is fast and uniform. By. There are two method of Seasoning as classified below. The different methods of seasoning are: (a) Boiling (b) Kiln seasoning (c) Chemical seasoning (d) Electrical seasoning. Natural Seasoning. Cl. Seasoning of timber can be carried out either naturally or artificially. With this process the timber is roughly sawn to size and stacked using spacers called stickers, with the timber stacked in the open air. It requires about 60 to 90 days for softwood. The process of dying timber or removing moisture or sap, present in a freshly felled tree, is called seasoning of Timber. In this method of artificial seasoning, the timber is immersed in water and water is then boiled. The Seasoning of Timber "Seasoning" is the name given to the methods of drying timber. It may even decay. A manual of the timbers of the world; their characteristics and uses, to which is appended an account by S. Fitzgerald of the artificial seasoning of timber by Howard, Alexander Liddon, 1863-1946 34/1 [51] Int. In this method wood is dried usually by the keeping the wood exposed to air, so that the moisture evaporates and wood is seasoned. Book Material. Well seasoned in a short span of time. Timber is seasoned under controlled temperature and humidity conditions with proper air circulation and ventilation system. This method of seasoning timber is cheap and simple. Care must be taken not to dry out timber too quickly otherwise the timber may split and crack or have severe stresses induced into it. Therefore, defects in timber such as shrinkage, cracks and wrapping are minimum. Seasoning isn’t always uniform in all the section of timber. Advantages Of Kiln Seasoning. A manual of the timbers of the world; their characteristics and uses, to which is appended an account by S. Fitzgerald of the artificial seasoning of timber. To resist the attack of insects, fungi. The timber contains free moisture and bound moisture. Natural Seasoning of Timber: Artificial Kiln Seasoning of Wood: Natural Seasoning is the most traditional way of seasoning wood or timber. Publication info. Why we need Seasoning Of Timber. Timber seasoning types. Artificial seasoning. Natural or Air seasoning: T his method of seasoning the wood is simple and cheap, but it very slow. Seasoning is necessary because it reduces the risk of decay or attack by fungi on green or unseasoned timber. If this sap is not removed the timber is likely to warp, crack and shrink. (ii) Artificial Seasoning: In this method timber is seasoned in a chamber with regulated heat, controlled humidity and proper air circulation. It is difficult to boil for large quantities of wood, so hot steam is sometimes passed through wooden logs in enclosed rooms. In natural seasoning, timber … To give strength, hardness and to make electrically resistant. After artificial seasoning the wood becomes harder, whereas in natural seasoning the wood becomes soft. Seasoning is done for the following reasons: When wood utilised as fuel, to make it burn quickly seasoning is done. Seasoning of Timber. Water Seasoning . The process of boiling or steaming develops the strength and elasticity of the wood but is economical of the enormous cost. There are Two Methods of Seasoning of Timber. The seasoning of timber using natural elements like water, the air is known as NATURAL SEASONING The natural seasoning could even be water seasoning or air seasoning. Newly felled tree contains a considerable quantity of sap. Artificial Seasoning: In this technique timber is seasoned in a chamber with, controlled humidity, regulated heat and correct air circulation. Artificial Seasoning. The kiln avoids the heat transmission loss as it discontinues the flow of steam and heated oil. Artificial Seasoning To make the drying more uniform and even, by controlled conditions artificial seasoning is adopted. This is such an important stage in the drying that it is given a special name, and the term is "fibre saturation point". There are different methods of artificial seasoning. Kiln Seasoning or Conditioning (aka Artificial Seasoning) is the method now most commonly used, especially for Softwood, because it is quicker and more economic. • Seasoning of timber should be protected from rain and humidity. 2) Artificial seasoning:-Artificial seasoning are the quick process of seasoning and moisture content can be controlled. 2) Kiln Seasoning Advantages: Insects are killed during this process, Require little stacking space, Moisture content of the timber may be brought to any desired level LondonMacmillan1920 Subjects 2. Time required for natural seasoning of timber is around 120 to 180 days. Moisture content in wood can be reduced to the desired level due to the artificial seasoning. Well -seasoning timber is ready to use. Natural Seasoning ; Artificial Seasoning; 1. Timber Seasoning Kiln comprises of chambers, made out of the best quality material like MS steel sections with great resistance against corrosion. SEASONING OF TIMBER. Seasoning may be completed in 4 to 5 days only. Artificial stone can be moulded into most intricate forms easily and so it is most economical when it is substituted for the carvings and ornamentations in natural stone. This is a very quick method. It reduces the time for seasoning. The wood with desired moisture content may be obtained by the artificial seasoning. Shrinkage, cracking and warping are minimized in artificial seasoning. In comparison to conventional pressurized steam heated kiln with boiler, our seasoning kilns require less maintenance. Kiln-seasoning thus began to assume an important position, where timber was in question, in commercial centres. It also gives good results. A meter is attached to the kiln which shows the reading of the moisture contained in the timber. Seasoning increase the strength of timber; To make concrete durable; To increase dimensional stability ; Seasoning reduces the weight of timber; Seasoning Methods. seasoning of Timber: Method of Seasoning:-The following two methods are commonly used for the seasoning of Timber. To make it suitable … For practical use, it is formed into a mortar or is used as concrete. To minimise the cost of handling, transport by decreasing the weight of wood. MC Neills Seasoning. United States Patent 1191 Pless ARTIFICIAL SEASONING OF TIMBER [76] Inventor: John Henry Pless, 48 Kinnerton St., London, S.W.l, England [22] Filed: Sept. 8, 1969 [21] Appl. When the drying is done in a kiln, the product is known as kiln-dried timber or lumber, whereas air drying is the more traditional method.. 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