Preservation and Materials used for Preserving Wood

Explain wood preservation and the materials used for preserving the wood.

Preservation and Materials used for Preserving Wood

Wood preservation is a very important aspect of the study of timber technology for increasing the life of wood. It is always better to keep the wood dry. Timber should be preserved from white ants which are most destructive for wood. Hence the proper preservation of wood should be observed by applying suitable types of oils or chemicals on the wood.

Common Defects of Timber Wood

Describe the common defects of Timber.

Common Defects of Timber Wood

Common defects of timber are as follows.

(i) Knots

(ii) Twist Fibers

(iii) Heart Shake

(iv) Star Shake

(v) Cup and ring Shakes

(vi) Twisting

(vii) Honey Combing

(viii) Rind Galls

(ix) Dead Wood

(x) Druxiness

Wood Seasoning and importance and Methods of Seasoning

What is Seasoning? Write down the importance of seasoning of timber and methods of seasoning.

Wood Seasoning

During the process of wood seasoning, moisture contained in the wood is taken away and thus the timber gets rid of sap. If the sap is not removed, timber is likely to shrink, crack and warp after sometime. decaying may also occur. The object of seasoning are,

(a) To add Ii durability, work ability and strength.

(b) To reduce its weight by taking off the moisture.

(c) To reduce the tendency to shrink, split, warp and rot.