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JSS3: BASIC TECHNOLOGY - 1ST TERM

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  1. Materials & Processing - Timber I | Week 1
    5Topics
    |
    1 Quiz
  2. Materials & Processing - Timber II | Week 2
    3Topics
    |
    1 Quiz
  3. Processing of Materials - Metals | Week 3
    5Topics
    |
    1 Quiz
  4. Processing of Clay, Ceramics and Glass | Week 4
    5Topics
    |
    1 Quiz
  5. Methods of Producing Plastics & Rubber | Week 5
    2Topics
    |
    1 Quiz
  6. Drawing Practice - Isometric Drawing | Week 6
    4Topics
    |
    1 Quiz
  7. Oblique Projection | Week 7
    2Topics
    |
    1 Quiz
  8. Orthographic Projection | Week 8
    4Topics
    |
    1 Quiz
  9. Perspective Drawing (One - Point Perspective Drawing) | Week 9
    4Topics
    |
    1 Quiz
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Properties of good timber

A number of factors affect the quality of timber. The following constitutes what to look out for when considering a quality timber:

1. The fibers of quality timber should be straight.

2. Strength: Good quality timber should have the strength to resist heavy structural loads.

3. Durability: It should be able to resist atmospheric effects, and alsoattacks of fungi and worms, for a longer period of time.

4. Elasticity: It should be able to regain its original shape after the removal of heavy loads. This property is important for sports products.

5. Appearance & Clour: Its color should be uniform, for example, dark color indicates strength and durability.

6. A quality timber should smell sweet.

7. It should have a silky bright luster.

8. A timber with good quality should be free of knots, shakes, and other defects.

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