The
Shake-table designed by NSET is an award-winning model for technology
transfer and to spread awareness on the effectiveness of earthquake-resistant
construction. The demonstration model won the San Jose Tech Museum Award
under Microsoft Education Award Category in 2004.
The low-tech innovation has been highly effective
in educating people about the structural shifts in buildings during
earthquakes and for raising awareness about safe building construction.
The Shake-table is essentially a building built to a given scale and
mounted on a table which is put through certain force to see the effects
of similar jolts that buildings go through during an earthquake. NSET
demonstrated its first Shake-table in January 1999. It has so far been
demonstrated in many countries of the Asia-Pacific region including
Afghanistan, India, Indonesia, Iran, Pakistan, and Tajikistan. NSET
has also assisted many partner institutions to design their own shake-tables
to spread awareness on safe building construction. NSET also supported
UNCRD in the organization of special sessions on Shake-table demonstration
at the World Conference in Disaster Reduction (WCDR), Kobe, Japan in
January 2005.
The Shake-table essentially has two identical buildings
of the same shape and size scaled to 1:10 of the actual sizes. One of
the buildings is built using earthquake resistant techniques and the
other is done traditionally – or without taking any special measures.
Both the buildings are placed on the same shaking platform (table) and
thus exposed to forces, similar to that buildings have to endure during
earthquakes. Increasing load is applied to the table through which the
force is transferred to the scaled models, and the weaker one made without
earthquake-resistant elements progressively collapses. The tables are
used to demonstrate how risk-reduction techniques in construction can
help buildings withstand the forces during an earthquake and convince
them of the simplicity of integrating earthquake-resistance into the
buildings. NSET has conducted more than 30 such demonstrations in Nepal.
An A3 size (300 x 420mm) shake-table has also been developed for use
with small-scale models for demonstrations at schools.