Presentation 15
WOOD UPON WHICH BUILDING
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Learning Outcomes
By the end of this meeting, student will
expected to be able to :
• Student earn building component in the
form of wood.
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Items 1: Source of Nature.
Items 2: Nature of Wood.
Items 3: Joining.
Items 4: Type Joining.
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WOOD UPON WHICH BUILDING.
• Source of nature.
Indonesia represent state producer of many
wood, goodness sum up and also kinds of its
type ( about 4000 more wood type), so that got
easy wood and cheap relative its price.
Therefore usage of wood for the construction of
building evaluated from economic facet of him
very beneficial. Wood represent natural
construction material, its meaning can be
obtained by nature without having to processed
in factory.
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• Part of a tree used for the construction of
building is from part of bar the core important
able to be formed in so many size measure, can
in the form of log. That is bar in form of is
foursquare or square, or form become flimsy
sheet so-called board. Part of branch and stick
thrown or used as firewood.
• These days wood start processed many factory
to be made free flimsy sheet, which is usually
recognized with : triplek, teakwood, jakarwood,
etc.
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Nature of wood
Nature of profiting :
• Easy to got and cheap relative.
• Easy to done without heavy equipments or
special for example is easy to cut, to be
attenuated, to be made hole, to be carved or
jointed as construction.
• Its for respecting to experience of so that often
its fibers expose as room decoration, for
example teak.
• Hot insulation, so that house which using many
wood materials will felt more cold is / balmy.
• Hold up chemical like salt or acid.
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Electrics insulation.
Light weight ( losing weight it self building), so
that economize foundation size measure.
All purpose its meaning can wear as building
construction, or as room decoration or as a
means of assist activity whereas like for the
bekisting, bouwplank, etc
Its secondhand sometime admit of to be reused, for example unloading easel especially
teak admit of to be weared for furniture.
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Nature of Harming :
• Flammable.
• Strength and durabel very is base on its tree age
and type
• Quickly destroy by natural influence.
• Alterable its for, dwindling or depended big
contained water rate.
• Its strength not uniform, although from same
birch, caused the existence of wood handicap.
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Wood Dimension
In commerce of wood generally have certain size, that is:
• Balk
: in form of is foursquare 6/12, 6/15, 8/12, 8/15,
10/10, 12/12.
• Board : in the form of flimsy sheet : 2/20, 3/20, 3/25.
• Louvre : board to make door leaf : 3/10, 3/12.
• Kaso : small balk size measure 4/6, 5/7.
• Reng : small wood size measure 2/3.
• Plepet : small wood size measure 1/3, 1/5 for klem read
or plafond list.
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• Wood length which met many in
commerce is 4 m, while long 5 m admit of
to be met but its costlier price usually.
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WOOD JOINING
• Continued wood one with other to obtain;get
required length or to form an construction
construct bar.
• Extension at one particular building construction,
good the construction is made from concrete,
steel and or wood represent weak dot at
construction. Therefore in making extension
have to pay attention extension size measure
conditions and laboring styles at extension.
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Styles which must be gave attention to extension
is :
1.
2.
3.
4.
Attractive force : extension have to relating each
other in order not to easy to release.
Urgent style : surface of extension have to [is]
patching each other meeting.
style of Puntir ( torsi ) : extension have to each
other in order not to easy to free terjungkit.
Transversal style and momen : transversal style
will cause extension [is] shifting each other,
momen will cause flexing, hence extension have
to be stiff and strong.
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1
3
2
4
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To get strong and durabel extension, hence
way of extension menerjakan have to pay
attention the followings:
• Wood to be jointed have to represent couple
which snugly, its meaning may not too diffuse (
will easy to escape or shift ) as well as may not
too boisterous ( if forced there will be part of
damage / break )
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Way of doing extension may not destroy its
wood ( may not be beated direct but have to
give pad, wrong drill will happened useless
hole and this hole can represent early decay,
wrong saw will lessen wide surface )
Around extension giving materials anti water
so that water do not easy to step into
extension gap.
Extension labored so that seen from outside,
to facilitate repair and control.
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Kinds Wood Extention
Extension up at length.
• This extension get required length.
• Pillar
Balk
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Corner Extension
• This extension consist of some bar which
its position not one straight line, for
example at construction construct
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Extension breadth ways.
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This extension is weared to joint boards in
width direction to get expanse area, for
example for board dance or insulator wall.
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Extension compile.
This extension consist of some
compiled goods become one
unity, get highly ( h ) and big
inertia. Extension better
compile at the most three
bole. This extension usually
use bolt and dowel.
Launching to fight against
style shift to be bar formation
not shift, bolt to unite bar
formation in order not to
release.
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Extension with
breach-block.
Extension with breachblock made if one
extension dot there is
more than two bole.
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• Extension with breach-block also meant to
obtain;get big inertia and strength to fight
against transversal style and momen.
Extension with breach-block require
continued appliance generally weared bolt.
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Extension with breach-block can be executed as follows:
• Breach-Block to the : When desired side under flattening
or there is other bar come from direction to the.
• Breach-Block under : When desired side to the flattening
or there is other bar come from direction under.
• Breach-Block upper and lower : when desired extension
have big inertia.
• Breach-Block from other side : when used breach-block
from other side, hence breach-block bar have to consist
of two put down bar is right and is left the than bar to be
jointed.
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