1. TIMBER
KUMPULAN 2
IDAYU SHAFINAZ BT ISMAIL
SITI NOR HASYIMAH BT AMRAN
NURUL SYAFIQAH BT ABD MANAS
UMI FAIQAH BT MUHAMAD WAHID
NORZAMIAH BT MUHAMAD NAZAMI

2. Type of timber
( A ) HARD AND HEAVY
Chengal Ship, framework. Sculpture
Balau Bridge, track, floor
T Beam, door framework / window
Y Kekatung
P
E Merbau Parquet, furniture, ornamental work
Resak Pile, floor, ship, framework
Tembusu Heavy construction, furniture

3. Kayu chengal Kayu kekatung
Kayu balau
Kayu resak Kayu tembusu
Kayu merbau

4. B) HARD AND MODERATELY HEAVY
Heavy construction, stringer,
kempas panel, bridge, cerocok
keruing Construction general, post,
track, bridge, carriage
kapur Truss, beam, post
Post, beam, parquet,
tualang
floor, furniture

5. Kayu kempas Kayu kuriung
KAYU KAPUR Kayu tualang

6. C) HARD AND LIGHT
Nyatuh
door, window, beam tiana
Jelutung Pensil, statue, picture frame
Meranti Light construction, floor
Ramin Furniture ornament, panel, wall
Sepetir locker, panel, furniture
furniture, panel, parquet
Kayu getah

7. nyatuh jelutung meranti
ramin sepetir Kayu getah

8. D ) SOFT
Ornament panel
veneer
plywood
Resin oils furniture

9. Resin oils

10. Defective of timber
Cause by:
natural draying
moss prcosessing
insert

11. Type of defect
book Grain kink
Crack fan spin
Star check mengeleding
Round shake curved
Grain angular
breach

13. Dry rot
Beetle drill wood
Wooden slow pest mushroom
Wooden worm Wood changing brown colour
Furniture beetle Soft, crack
lyctus beetle Wood cannot bear
Death watch beetle Easy in break

14. Advantage and disadvantage of
timber
advantage disadvantage
Soft Not homegeneous, there is timber
yard, slanting fibre, inequality as
nature plant result.
Have been worked easily Behave higroskopis namely
impressionable by change humidity
of the air
Cheap prise inflammable
Sufficiently high strength The existence of disabled on wood
when grow timber yard , crack ,
stale
Enough preserve

15. plywood
 A number of thin veneers or plies of softwood or
hardwood glued together.
 The reason the use :
* dimensionally stable,
* less cracked,
* will not warp, shrink, and impartial.
 Advantages of plywood :
* Size standard / standard size (4 feet x 8 feet is
the normal size)
*Low cost for size
*strength
* Stability (warping and shrinkage problems are rare)

16.  Grade of plywood :
* "A" is the highest quality grade available. The surface
is usually smoothed and flatsurfaces can be painted.
* "B "grade quality veneer as the second
best. has a solid surface. Wood surface is usually smoothed.
* "C" is low quality, but still be an option for use
in construction. This panel is usually not smoothed.
* "D" is low quality and usually used for the rear
surface in the construction industry. Grade "D" has never
been repaired or smoothed. not recommended for use as
a permanent weather elements.

17. Medium density fibreboard
(MDF)
 Sources : MDF is a type of hardboard, which is made from
wood fibres glued under heat and pressure.
 Advantages :
*It is dense, flat, stiff, has no knots and is easily machined.
* MDF can be painted to produce a smooth quality surface.
*MDF may be glued together with PVA wood glue. Oil,
water-based paints
and varnishes may be used on MDF.
*Veneers and laminates may also used to finish
MDF

18.  Disadvantages :
*MDF contains a substance called urea formaldehyde, may
cause
irritation to the eyes and lungs.
*facemasks are needed when sanding or cutting MDF .
* MDF contains a great deal of glue the cutting edges of
your tools will
blunt very quickly.
 Uses :
* It may be used to make display cabinets,
*wall-panels and storage units.

19. chipboard/ particle
board
 Sources: -Gluing together wood particles with an adhesive,
under heat and pressure makes chipboard. This creates a
rigid board with a relatively smooth surface.
 Chipboard is available in :
*normal - is fairly soft
*medium - between normal and high density , only suitable
for internal use
*high-density - is solid and hard
 Uses : kitchen tops and fire doors

20.  Disadvantages : All grades of chipboard except the high-
density variety tend to soak up water. Once it is water logged,
chipboard tends to swell and breakdown.
 Uses: -High-density : as the carcass for kitchen units and
worktops and flooring.
* hardwearing, rigid and heavy.
- standard : flame-retardant, flooring, and
moisture-resistant.