TECHNICAL MATERIALS: WOOD

TECHNICAL MATERIALS: WOOD

1. RAW MATERIALS

   • animals
   • plants
   • minerals
   • NATURAL MATERIALS
     • PROCESSED MATERIALS
       • PRODUCTS
       • technical materials

2. CHOOSING MATERIAL

   • criteria:
     • no toxic
     • strong
     • cheap
     • weighs little
     • attractive
     • nice to touch
     • available
     • easy to build

3. PROPERTIES

   • sensory
   • mechanical
   • physical
   • chemical
   • environmental

4. NEGATIVE PROPERTIES

   • combustion
   • moisture
   • rotting

5. OBTAINING WOOD

   • 1.felling
     • 2.removing
       • 3.transport
         • 4. sawing
           • 5. drying
             • 6. cleaning,sanding
               • 7. finishing treatment