With the increased use of several secondary species that possesses higher shrinkage than teak, deodar, rosewood etc. Diagram of essential features of good lumber stacking for proper seasoning. Let us discuss the objectives, advantages, types, and methods of seasoning of timber. It may be further classified into the following: a. Seasoning of timber or simply Timber seasoning is the process of drying timber or removing moisture or sap, present in a freshly felled timber, under more or less controlled conditions Reasons for Timber Seasoning Freshly felled timber contains moisture 100 to 200% of its dry weight. Such end racking promotes good air circulation and consequent rapid drying which eliminates the staining problem but often causes end surface checking and warping of the material. Seasoning of timber should be regarded as an integral part of timber utilization. 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 How does it Work? An adequate supply of wooden sticks (spacers) will be needed to separate each layer (Figures 1 and 2). Most air seasoned material is dried in flat piles with stickers placed between layers, but when it is essential to have rapid drying to prevent sap stain, end piling may be used. Of the methods available for seasoning wood, air drying is the oldest and simplest. Seasoning is done for the following reasons: When wood utilised as fuel, to make it burn quickly seasoning is done. The wood can be used immediately as and when required. Care should be taken not to expose the freshly converted timber stacked for seasoning to severe winds or to sun. Your lumber probably will be cut in random lengths and widths. Generally, air seasoning is a slow process. Warping board which is tangentially sawn may invariably warp. The example of highly refractory woods are heavy structural timbers, i.e. There are multiple advantages to having wood artificially seasoned that relate to the quality, strength and cost of the wood. Material cut from the oaks, sycamore, beech, maple, and other woods which have large rays will surface check readily and consequently thick material cut from these trees is given special treatment. Reference [5-7] explained that seasoning involves the evaporation of excess moisture. It requires the following: The details depend on the size, quantity and species of the timber. To minimise the cost of handling, transport by decreasing the weight of wood. 1.4. The first consideration is to prepare a strong foundation, 1 to 2 feet above the ground, on which to pile the lumber. Improve the resisting power of timber so that it becomes less prone to fungal and insect attacks. Care is taken to see that there is proper air circulation around each timber balk. Often the ends are wrapped or painted to slow the moisture loss from the end grain. 2. Seasoning of timber does not only mean extracting of moisture but also plays an important role in providing strength and durability to the timber. It is very important that the sticks be uniform in thickness. Water seasoning is done to reduce the sap . The 25 mm thick timber may take three to four months to dry in a moderate climate. A well-seasoned piece of wood should have 10% to 12% of moisture equal to atmospheric humidity of a … Natural Seasoning has two methods (I) Water Method (II) Air Method. When the drying is done in a kiln, the product is known as kiln-dried timber or lumber, whereas air drying is the more … Sthapati Designers & Consultants Pvt. Faulty method of seasoning causes serious defects in woods. Called seasoning timber either naturally durable or non-durable, need proper seasoning a layer. 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