Raw materials

Raw materials

1. Definition: Producs extracted directly from nature

2. Types

   • Natural (plants,animal..)
   • Processed (Industrial processes are applied to raw material
     • Artificial (made simpler materials)
     • Syntheic (not found in nature

3. Properties

   • Mechanical
     • Hardness
     • Mechanical resistance
     • Toughness
     • Brittless
     • Elasticity
     • Plasticity
   • Thermal
     • Expansion
     • Thermal conductibity
   • Enviroment
     • Toxicity
     • Environmental hazard
     • Recyclability
     • Blodegradability

4. Tools

   • Marking
   • Assembly
   • Support
   • Cutting and levelling
   • Measurement
   • Impact

5. Wood

   • Definition: is the fibrous material that trees made of
   • Types
     • Non-resious
     • Resinous
   • Properties
     • Hardness
     • Thermal and electrical insulator
     • Flexibility
     • Density
     • Hygroscopicity
     • Sound conductivity
     • Spitability
     • Toughness
   • Forms
     • Natural wood (ejemple strips,beams..)
     • Prefabricateed wood(ejempleit doesnt have knots or grains)
     • Commercial forms (ejemple Polywood)