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Timber
Museum
The Timber Museum
has exhibits of the best-known and most common
commercial woods. One hundred and twenty six
commercially important species displayed along
the walls of the museum provide the visitors an
idea on the characteristics of these woods. The
lower halves of the planks have been left in the
natural state, while the upper half are oiled
with the linseed oil to enhance the features of
the timber. Hanging above the planks are
photographs of the trees whose planks are
displayed along with small maps indicating their
distribution in India. The transparent
photomicrographs in a separate case show the
structure of common Indian Woods as seen under a
microscope.
One cubic feet of green wood sample contains
about 16 liters of water and it requires
seasoning. After seasoning a significant amount
of water (2.7 litres) still remains in the wood.
If wood is not seasoned, defects like warping,
cracking and twisting occur. A number of models
representing different methods of air seasoning,
steam seasoning and solar kiln seasoning are on
display.
Timber engineering techniques using short
dimensional timbers for large span of trusses
are depicted. Cabinet designing is demonstrated
using different timbers and various patterns.
The center of attraction, however, is a
transverse section of a 704-year-old Deodar (Cedrus
deodara) tree, which was felled in 1919 from
the hills of U.P. The natural and climatic
events can be clearly traced by reading the
annual rings. Depiction of Indian history
starting from the date of construction of Qutub
Minar to Jalianwala Bagh incident made on this
exhibit makes it very interesting. Another
section displayed is that of a 330-year-old teak
(Tectona grandis). Walnut and Padauk burr
(outgrowths on the stem) specimens are also
items of interest.
Popular and
inexpensive use of plywood, laminated wood,
compregnated wood, bamboo boards and diaper are
demonstrated and bamboo and wooden springs for
furniture and other articles are displayed.
Comparative mechanical properties of different
timbers are depicted for various end uses. There
is a gun carriage wheel made of rosewood,
shisham, and Andaman Padauk.
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