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Wood and Modified Wood

Wood and Modified Wood. Humans have used wood for construction for centuries because of its abundance and ease of use. The trunk is most used in this industry. Two classes of wood: Hardwood - Softwood. Hardwood is characterized as having more resistance and longevity than softwood.

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Wood and Modified Wood

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  1. Wood and Modified Wood

  2. Humans have used wood for construction for centuries because of its abundance and ease of use. • The trunk is most used in this industry.

  3. Two classes of wood: • Hardwood - Softwood Hardwood is characterized as having more resistance and longevity than softwood.

  4. Transforming Timber to Lumber • Cut down a tree.

  5. 2. The branches are removed. 3. The trunk is cut into sections.

  6. 4. The cut sections are transported to a wood mill.

  7. 5. The bark is removed.

  8. 6. The trunk is cut into a beam.

  9. The beam is cut into wood planks for construction. Ex. 2 x 4 1 x 3 4 x 4

  10. 8. The wood planks are dried.

  11. Wood has certain characteristics that dictate its application. Ex. Durability (soft wood or hard wood) Elasticity Mass Colour (white, pink, yellow, brown) Tint (light or dark) Resistance (decomposition) Ease of use and assembly

  12. Unlike other materials (plastic, metal) the life span of wood can be shortened due to insects, mushrooms and mold.

  13. Properties of Different Types of Wood

  14. Modified Wood • Natural wood can be transformed to modified wood to lower costs. • Modified woods are woods where substances are added substances to obtain properties different from natural wood. Ex. Particle Board is made by reducing medium quality wood into particles then gluing it back together.

  15. Characteristics of Modified Wood

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