Achaemenid architects who constructed Pasargadae
some 2500 years ago used an innovative method
called “base isolation” to consolidate their
structures against earthquake.
The Pasargadae structure, in Fars province, is
located in a quake prone area and the architects
who built it used base isolation to prevent
distruction due to earthquakes up to a magnitude
of 7 on Richter scale.
The method which is still used in construction of
major sites specially in earthquake prone areas
such as in Japan, includes the installation of two
bases, one fixed and another, which comes over the
first, movable. In case of an earthquake, the
bases would move and therefore the distructive
force of the tremblances is defeated and the
structures can stand safe and sound in earthquakes
up to a magnitude of 7 on Richter scale.
Construction of Pasargadae with such technique is
an indication of the developed knowledge of
archictecture and climatic conditions, head of the
architectural studies of the historical site,
Abdol Azim Shah Karami, epxlained to CHN.
Studies on the site have shown that the Achaemenid
architects were also aware of the area’s soil
not being able to withstand the heavy structures,
and have therefore laid vast foundations deep down
Pasargadae historical site is the first Achaemenid
capital, built 2500 years ago by order of Cyrus
the Great. Today the complex, located near Shiraz,
in the southern province of Fars, enjoys
inscription on the UNESCO’s World Heritage List.