timber cannot be used for carpentry joinery immediately after it converted as there is a lot on moisture present in thr wood. How long does it takes?
Stack it outside under cover for 3 years.
Or buy comercial timber that has been "seasoned" by placing in a vacuum chamber to remove the moisture!
As fresh timber which is obtained from trees contains about 30 to 40 % sap or moisture. This sap is very harmful for the life of a timber. Therefore, it is necessary to remove that sap by applying some special methods. All those methods which are used for removing the sap from timber are collectively termed as seasoning of timber. Types of Timber Seasoning: The main types of timber seasoning are as under. (1)Natural Seasoning, (2)Artificial Seasoning, (a) Kiln Seasoning, (b) Chemical Seasoning, (c) Electric Seasoning, (3) Water Seasoning
Seasoning of timber is the drying of timbers moisture content to a level below 22% by several methods, including Air seasoning, kiln seasoning or a combined of both. Seasoning of timber allows wood to be used for practical purposes whether it be for shaping, constructional purposes, what ever the need for timber, it must be seasoned.
While seasoning, timber can warp, making it unuseful.
because it needs to have increased dimensional stability, increased strength, an reduce weight issues
advantages and disadvantages
what the rar
there are lots of techniques by which we can improve the life of a timber like seasoning of timber,by applying different types preservatives coat before it is used.
If you try to burn wood that was cut down that year, there will be some left over water in the wood that will make it harder to burn. So, the wood is seasoned, by being stored for a few years before being burned, to let the wood dry out.
Its Simply sorting timber into different groups-or stress grades with timber having similar structural properties in one group. Brian Kagezi S.
Equilibrium Moisture Content
1) Air Seasoning Advantages : No expensive equipment needed, Environmentally friendly Disadvantages :Takes longer than Kiln seasoning 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 Disadvantage: It is expensive , It gives a little weaker timber when compared to air seasoning
Timber can be made reasonably fireresistant by a. soaking it in Ammonium Sulphate b. coating with Tar paint c. pumping creosote oil into timber under high pressure d. seasoning process