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Topic 5) Material Considerations
Timbers
Natural & Manufactured Timbers
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Helena Martins
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What are the characteristics and uses of
hardwoods
?
Hardwoods are found in
tropical climates
.
Deciduous
trees that drop leaves in winter.
Tighter
grain
,
expensive
, tough, and
hardwearing
.
Commonly used for
furniture
and everyday objects.
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What are the characteristics and uses of
softwoods
?
Found in cooler
climates
.
Coniferous
trees that bear needles and cones.
Looser
grain structure
, inexpensive, soft, and easy to work with.
Commonly used for household construction and projects.
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What are the characteristics and uses of
manufactured
boards
?
Made from processed
natural timber
waste products.
Pale brown appearance with no
grain
.
Lightweight, easy to work with, and used in construction.
Often layered with
adhesive
for strength.
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Hardwoods
Hardwoods are found typically in tropical or sub-tropical climates.
Hardwood trees are deciduous trees that drop leaves in winter.
Hardwoods mainly have large broad leaves, which usually produce a seed or fruit.
They have a tighter grain and are expensive.
They are generally quite tough and hardwearing.
Hardwood trees can take up to 100 years to grow fully.
Softwoods
They are found typically in cooler climates.
Softwood trees are
coniferous
trees that usually bear needles and cones.
They are frequently called evergreen trees as most keep their needles all
year
round.
They have a looser grain structure and are inexpensive compared to hardwoods.
They are generally quite soft, easy to work with and used as construction material.
Softwood trees can take up to
25
years to grow fully.
Manufactured boards
Usually sheets of processed natural
timber
waste products.
Made from waste wood, low-grade timber and recycled timber.
Often covered with thin slices of a more expensive wood called a veneer.
They have a pale brown appearance with no
grain
.
They are generally quite lightweight, easy to work with and used as
construction material
.
Often made up of several layers mixed with adhesive to increase their strength.
Ash
Pale cream in appearance.
Flexible, shock resistant and
laminates
well.
Common uses include sport equipment and handles for garden tools.
Beech
Pink in
appearance
with a tight
grain
.
Finishes well and is very durable.
Common uses include furniture and children’s toys.
Mahogany
Deep
reddish
brown in appearance.
Finishes well and is very durable.
Common uses include
high-end
furniture.
Oak
Light brown in appearance with
variable
grain.
Finishes to a
high quality
.
Tough and durable.
Common
uses include flooring and furniture.
Balsa
Pale brown in appearance with open grain.
Very lightweight, soft and thin, prone to snapping.
Common uses include
aircraft
and boat model kits.
Larch
Pale brown with a dark grain.
Tough,
water resistant
, good to work with and
machines
well.
Common uses include furniture, cladding, flooring and joinery.
Pine
Pale
yellow
to brown in appearance.
Lightweight
, easy to work, can split at times.
Common uses include furniture, decking, and interior building material.
Spruce
Cream in
appearance
with an even
grain
.
Easy to work with, stiff and lightweight.
Common uses include musical instruments and furniture.