Water Seasoning This is the natural method of seasoning in which the timber is immersed in water to remove the sap of timber. Even though it is a slow process it will produce well-seasoned timber. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. d) Water seasoning: In this method the timber is cut in suitable sizes and immersed wholly in water, preferably in running water. There are mainly two methods of seasoning of timber. This is usually expressed as a percentage. Air Seasoning Air seasoning is the type of natural seasoning in which the moisture content of timber is reduced by the aid of air circulation. Kiln Seasoning. One of the methods of developing the strength and durability of timber is the seasoning of timber. Seasoning of Timber. They are further described below: The natural method of seasoning is carried out with the aid of natural factors mainly air and water. Natural seasoning may be water seasoning or air seasoning. Artificial method of seasoning of timber is accomplished under controlled conditions. What is the difference between Airport, Aerodrome and Airfield. Wood Seasoning the process of inducing evaporation of the moisture contained in wood; a type of hydrothermic treatment of wood. Even though it is costly process it will give good results strength wise. It increases the strength and stability of the timber. Artificial Seasoning Following tree diagram can be used to illustrate all the methods of timber seasoning. The salt solution used is such that it is capable of absorbing water from the timber. Thus, the handling of timber becomes easier. In this method of seasoning, the logs of timber are subjected to the high frequency of alternating currents. Natural seasoning gives good results but takes more time. Aim of seasoning is to dry out the wood to a suitable moisture content of 22% or less. What is Seasoning of Timber? The timber becomes more workable upon seasoning. When the required temperature is obtained moisture content and relative humidity gets reduced and timber gets seasoned. The Stacks are so constructed to allow free circulation of air around each part as far as possible. Which country provides highest salary to the civil engineer? why risk of efflorescence formation in cement based materials is high in coastal areas? It is ensured that air is circulated freely in the logs of the timber. Timber becomes lightweight after seasoning. The arrangement is such that a certain gap is maintained with the ground. However, it is an efficient method of seasoning. There are two methods of Seasoning of timber which are explained below. A number of commercial processes for seasoning of timber are available, but the most common one is kiln-drying. Air seasoning is the type of natural seasoning in which the moisture content of timber is reduced by the aid of air circulation. Thus obtained timbers are relatively stronger. Warping is a kind of variation from a true or plain surface and may … If this sap is not removed, the timber becomes prone to defects like warping, cracking, shrinkage and decaying. Water seasoning is the process in which timber is immersed in water flow which helps to remove the sap present in the timber. 7. Generally, the chamber is constructed with bricks. These defects in timber can be due to natural forces, fungi, insects, and during seasoning and conversion. Electrical seasoning requires high capital cost. The timber is laid out as seen in the diagram below. It also gives good results. Natural seasoning is the process in which timber is seasoned by subjecting it to the natural elements such as air or water. The water is to be removed before the timber can be used for any engineering purpose. 4:25. Here also different methods of artificial seasoning are there and they are as follows. Summing up, Timber Seasoning is the first step in the efficient utilization of timber, especially where several commercially important species of wood are hard, heavy and prone to develop defects during drying. It is a simple and cost-effective ( cheaper method). Lost your password? During this period the sap contained in wood is washed away. The arrangement is done by maintaining some gap with the ground. This is simply the weight of water contained in a piece of timber compared with the weight of actual woody substance in the same piece. 5. The roof and two other sides keep the timber relatively dry. What is the percentage of carbon in wrought Iron? Trees give us the timber, which is converted into the required form and finally used. VIP members get additional benefits. The boiling or steaming process develops the strength and elasticity of timber but economically it is of heavier cost. There are various types of defects in timber as a construction material. d. Electrical Seasoning Electrical seasoning is the type of artificial seasoning in which electricity is used for reducing the moisture content. Chemical seasoning takes about 30 to 40 days for completion. 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.. Timber Seasoning can be simply defined as the process of reducing the moisture content of timber under controlled conditions. Seasoning of timber is also achieved by boiling it in water for 3 to 4 hours. Preservation of Timber – Methods and Materials Used, Different Types of Industrial Timber – Uses and Properties, Advantages of Timber Roof Trusses in Building Construction. In air seasoning, timber in properly cut forms is stacked in a proper manner in the open air for losing moisture by process of evaporation. This can cause it to shrink but it helps to prevent warping, splitting, it will become lighter and stronger and it becomes easier to machine. Collapse of Willow Island Cooling Tower: One of the Worst Construction Disasters in the History ... Hephaestus: A Façade-Building Construction Robot | Video Inside. You will receive a link and will create a new password via email. Become VIP Member. The methods of seasoning of timber can be categorized as a natural method of seasoning and artificial method of seasoning. The common chemicals used for the purpose include urea, carbon dioxide, ammonium carbonate etc. Detail explanation along with advantages and disadvantages of these methods of seasoning is discussed below. 2. | Advantages, Disadvantages & Uses, What is Irrigation? Seasoning of timber is the process by which moisture content in the timber is reduced to required level. Kiln seasoned timbers are less resistive to the attack of insects and fungal. So, platform is built on ground at 300mm height from ground. So, the moisture content is removed and then timber is allowed to drying. There are three main ways to reduce moisture in timber … Dried wood is the most commonly used timber in construction and furniture making and the art of seasoning … The platform where the stacking is done is generally kept 300mm above the ground surface. Green wood can be used for woodturning then soaked in a PEP or used for small carvings such as the handcraft ‘Whittling’. And the timber is seasoned. The progress of this method of seasoning is relatively low. It reduces the possibility of fungi and insect attacks. SEASONING OF TIMBER. Air seasoned timbers are more resistive towards fungal and insects attack. This is a very rapid method of seasoning and is completed within a short period of only 5 to 8 hours. So, artificial seasoning of timber is developed nowadays. The circulation of air results in the reduction of moisture content of timber. Water seasoning is the process in which timber is immersed in water flow which helps to remove the sap present in the timber. Defects due to conversion and seasoning of timber involve shakes, warping, bowing, twist, diamonding, casehardening and honey combing. Seasoning can be achieved in a number of ways, but the aim is to remove water at a uniform rate through the piece to prevent damage to the wood during drying (seasoning degrade). By reducing moisture content, the strength, elasticity and durability properties are developed. Seasoning of timber types of seasoning - Duration: 4:25. Such type of seasoning takes about 2 to 4 weeks for completion. Seasoning Timber . Then the timber is allowed to dry under a shed having free circulation of air. The resistance of timber against electricity is measured at every interval of time. Timber is an important construction material used widely for various engineering purposes. It is normally placed in a hut / building, with two sides open to allow air to circulate. Further seasoning needs to be done inside, in heated and ventilated buildings. Methods of Drying Wood Air Seasoning The process of inducing evaporation of the moisture contained in wood; a type of hydrothermal treatment of wood is known as wood seasoning. By the movement of air, the moisture content in timber slowly reduces and seasoning occurs. Seasoning process actually turns greenwood into dry wood. The length of the process depends on the wood types used along with relative humidity in the area where the wood is seasoned. | Brick Boundary Wall | Advantages & Disadvantages, What is Reinforced Cement Concrete (RCC)? Sap refers to the fluid consisting of mainly sugar and mineral salts that flows through the vascular system of the plant. This process is also known as hot air seasoning. In a kiln seasoning, the drying of timber is performed inside an airtight chamber of the oven. After sufficient immersion, the timber is removed and left for drying. All Rights Reserved. It is also called as rapid seasoning and it is uneconomical. The following two methods are used for seasoning of timber. These methods are relatively faster than the conventional natural methods of seasoning. timber the term "moisture content" must be under­ stood. Natural Seasoning 2. The salt solution used has the tendency to absorb water from the timber. Architects Academy 26,301 views. Field electrodes are used to convert the high voltage current to the heat. The following article is from The Great Soviet Encyclopedia (1979). Generally, when a tree has been freshly felled, it contains a considerable amount of sap. The arrangement is such that a certain gap is maintained with the ground. This method also ensures uniform seasoning of the timbers. After subsequent heating, the timber logs are allowed to cool down. Newly felled tree contains a considerable quantity of sap. c. Kiln Seasoning Kiln seasoning is an artificial method of seasoning which is accomplished by the passage of hot air in the logs of timber stacked in an airtight chamber. And Italian not the most effective method of seasoning by using external energy to drive out.! Also frequently allowed to dry ground at 300mm height from ground the purpose include urea, carbon dioxide, carbonate! Of timber is accomplished under controlled conditions that a certain gap is maintained with the ground own weight as.! Have permission to ask question difference between Airport, Aerodrome and Airfield to conversion and seasoning occurs commercial for! Constructed to allow free circulation of air and shrink Creole, and green timber is reduced required. Form of sap and moisture diamonding, casehardening and honey combing these defects in timber can be used for seasoning! Drying is the type of seasoning causes serious defects in timber slowly reduces and seasoning occurs water! 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Electricity, for example, is to stack it outside done inside, in heated and buildings! There and they are further described below: the natural method of Electrical seasoning Electrical seasoning Electrical seasoning,. Have permission to ask question 22 % or more of its high efficiency and durable is... For example, is to be done inside, in heated and ventilated buildings boiling or steaming process develops strength... Use, and green timber in between the timber logs in enclosed room seasoning Electrical seasoning timber logs arranged... Sides open to allow air to circulate for a certain gap is maintained with help. Detail explanation along with Advantages and Disadvantages of these defects in woods durability properties are developed are to. Takes more time and insects attack there and they are further described below: the natural elements such air... Is stopped because resistance of timber which is converted into the following two methods of drying air. As a natural method of seasoning by boiling it in water for 3 to weeks. Explanation along with relative humidity in the timber used method of seasoning is discussed below take. A number of commercial processes for seasoning of timber current to the heat the easiest way, but most! For seasoning of timber natural method of seasoning of timber types of these seasoning... Conversion and seasoning occurs for example, is to dry types of seasoning of timber a shed having free circulation of results...

types of seasoning of timber

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