The defects occurring in the timber are grouped into the following five divisions: (1) Defects due to Conversion (2) Defects due to Fungi (3) Defects due to Insects (4) Defects due to Natural Forces (5) Defects due to Seasoning. The various types of defects under each category will now be briefly discussed. (1) Defects due to Conversion: During the process [...]
The timber which is prepared scientifically in a factory is termed as the industrial timber and such timber possesses desired shape, appearance, strength, etc. Following are the varieties od types of industrial timber: (1) Veneers (2) Plywoods (3) Fibre Boards (4) Impreg Timbers(5) Compreg Timbers (6) Block Board and Lamin Board (7) Glulam (8) Flushdoor Shutters (9) Particle Board or [...]
Following are the four steps of timber processing: 1. Felling of Trees 2. Seasoning of Timber 3. Conversion of Timber 4. Preservation of Timber. Step # 1. Felling of Trees: To get timber, the trees are knocked down or cut down or caused to fall to the ground. This is known as the felling of trees. The important facts to [...]
In this article we will discuss about:- 1. Meaning of Timber 2. Trees for Life 3. Fire-Resistance 4. Qualities 5. Factors Affecting the Strength 6. Decay 7. Storage 8. Market Forms 9. Advantages 10. Uses. Meaning of Timber: The word timber is derived from an old English word timbrian which means to build. The timber thus denotes wood which is [...]
There are over 150 species of timber which are produced in India. Following are the chief varieties of timber trees which are used for the engineering purposes in India: (1) Aini: Its colour is yellowish brown. It is elastic, close-grained and strong. Its weight at 12 per cent moisture content is 5950 N/m3. It takes polish. It can be used [...]