Natural And Manufactired Timber Flashcards
Two main groups of wood are..
Softwood and hardwood
Hardwood timber comes from..
Deciduous trees that have broad leaves
Slower growing so more expensive
Closer grain - more dense and hardwearing
variety of colours so good aesthetics
Softwood timber comes from…
Coniferous trees with needle leaves
Faster growing so cheaper
Wider grain
More absorbent
What is MDF?
Medium density fibre board manufactured from bonded wood dust.
Dense and tough
Smooth surface
What is chip board?
Manufactured board made from bonded larger wood chips.
Good compressive strength
Edges chip easily
What is plywood?
Manufactured board made from alternatively rotated bonded veneers.
Available in various forms (eg marine ply is more water. resistant)
What is blockboard?
Manufactured board made from bonded composite of battens and veneers
4 Properties of wood we consider are:
strength
grain structure
surface finish
absorbency
Natural timber comes in 5 forms:
plank board strip square dowel
What 6 properties do we use to identify natural timbers?
weight colour grain texture durability ease of working
Wood selection for building a house
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