WOOD

WOOD

1. wood

   • paper
   • cardboard
   • cork

2. man-made wood

   • chipboard
   • plywood

3. obtain wood

   • 1. felling
   • 2. deborking
   • 3. transport to the sawmill
   • 4. sowing for end use
   • 5. driying
   • 6. clearing , planing and sanding
   • 7. treatments and finishes

4. problems wood

   • conbustion
   • moisture
   • rotting and insect attack

5. raw materials

   • animal
     • plant
       • mineral

6. tecnhical materials

   • pine
     • iron
       • melomne

7. tipes of properties

   • envairomental properties
   • chermicla properties
   • phyical properties
   • thermal expansion
   • electrical condubity
   • mechanical properties
     • hardness
       • toughness
         • deformability
           • ductility
             • malleability
   • sensory properties
     • tranparent
       • tranluced
         • opaque