Seasoning of timber is the
process by which moisture content in the timber is reduced to required level
. By reducing moisture content, the strength, elasticity and durability properties are developed. A well-seasoned timber has 15% moisture content in it.
What is seasoning lumber and how is it done?
Wood drying (also seasoning lumber or wood seasoning)
reduces the moisture content of wood before its use
. 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. There are two main reasons for drying wood: Woodworking.
Why is seasoning of timber done?
Seasoning is the process of
drying timber to remove the bound moisture contained in walls of the wood cells
to produce seasoned timber. … Seasoned timber tends to have superior dimensional stability than unseasoned timber and is much less prone to warping and splitting in service.
What is wood seasoning and why is it important?
Seasoning wood is
the process of correctly drying timber in order to remove moisture in the cells of the wood walls
. It is a necessary procedure to produce seasoned timber, helping it to burn cleanly.
What are three 3 advantages of seasoning timber?
- Reduced Inception of Decay or Stain Fungi. Seasoned wood dried to a moisture content of less than 20% below the fibre saturation point will ultimately prevent the onset of stain fungi and decay. …
- Weighs Less. …
- Increased Strength and Stability.
What are the two types of seasoning of timber?
There are two main ways of seasoning timber,
Natural (Air) and Artificial (Kiln) drying
. Both methods require the timber be stacked and separated to allow the full circulation flow of air, etc. around the stack.
What are the first 4 stages of wood preparation?
- Stage One: Felling. The first stage of preparing the timber for commercial use is called ‘felling’ – the process of downing individual trees. …
- Stage Two: Storing/ Transporting. …
- Stage Three: On Site. …
- Stage Four: Seasoning. …
- Stage Five: Preparing for Market. …
- Questions?
What is the most effective method on wood seasoning?
The most common and effective commercial process for drying wood is
kiln seasoning
, which accelerates the process of removing moisture through the use of external energy. Drying takes two days to one weekend, depending on the type of wood. Two methods, progressive and compartmental, are used for kiln seasoning.
How are trees seasoned?
Seasoning of natural wood, is the process through which excess water / moisture is removed, leaving typically
fifteen to twenty percent water content
. Wood that has not been seasoned and still has a high water content is called ‘green wood’. Wood that has had its water content reduced is called ‘seasoned wood’.
What are the advantages of wood seasoning?
- To increase dimensional stability. Wood shrinks across the grain (not along the grain) when it dries. …
- To reduce or eliminate attack by decay or stain. …
- To reduce the weight. …
- To increase the strength.
Why is it important to season a wood?
The process of inducing evaporation of the moisture contained in wood; a type of hydrothermal treatment of wood is known as wood seasoning. The purpose of seasoning is
to reduce the moisture content in the wood to a level appropriate
to the use of the articles made from the wood.
How many months are required for natural seasoning of timber?
The process of drying timber efficiently is known as the seasoning of timber. Natural Seasoning of Timber: Natural seasoning is the process in which timber is seasoned by subjecting it to the natural elements such as air or water. Natural seasoning takes nearly
4 – 6 months for felled trees
.
What are the disadvantages of seasoning timber?
- It needs a larger space for seasoning.
- This process is long and depends on natural air.
- In natural seasoning, the ends of timber dry fast and split. …
- During the natural seasoning, there is a possibility of fungal and insect attack.
What are the disadvantages of air seasoning?
State two advantages and two disadvantages of Air / Natural Seasoning. Advantages: Inexpensive, Easily managed, No specialist labour required, No expensive equipment needed. Disadvantages:
Slow, No control over final MC, MC of only 18% achievable, Weather dependent, Boards prone to fungus/insect attack
.
What happens during kiln seasoning?
A
drying process predominantly utilized for reducing the moisture content in timber
. The process is carried out in a closed chamber, providing maximum control of air circulation, humidity, and temperature. … One advantage of kiln seasoning is that lower moisture contents are possible than can be achieved using … …
What are the method of seasoning of timber?
- Moisture Content of Wood. Water is stored in wood in two primary forms: …
- Kiln Seasoning. …
- Air Drying. …
- Solar Drying. …
- Microwave Seasoning. …
- Chemical Seasoning. …
- Seasoning Degrade. …
- Sources:
