Zirve Eki - ISTANBUL REstate

Yüksek
Binalarda
Yaflam
Gayrimenkul Zirvesi 10
Jan Dijkema
Chapman Taylor Mimarl›k, Direktör
Katk›lar›yla
So we have done extensive wind tunnel studies in order to control
the structural performance, also for study of what happens with
the façades, the pressure and the suction on the façade of extreme
heights. And thirdly I actually undersized that model and I was
setting the moving trees and putting little canopies to control
the comforts of the people at street level and also very important
at the swimming pool level of the roof, at the roof of the podium.
Talking of this swaying, you can see what happens to a normal
building of these heights. We should try to reduce and a building
like this could move up to extreme meters at the top of the
building. You won't really notice, unless you have an another
building right next to it. And but we have achieved to reduce
this and therefore 15% of concrete less, less reinforcement, less
weight on the foundation because of less concrete and therefore
also 15 or more percent reduction in cost and in also construction
time. This is possible by a system that our engineers have developed,
which is the use of viscous dampers. You can see the lady on
the size on the back of the dampers. These are enormous dampers,
not the car size ones and which of we located at the intermittent
lunch room levels, the level 14, 31, 50 and the top is 69. And
reduce the overall weight as we have seen before into smaller
weights and therefore reduce the lateral movements considerably.
All of this, as I said, reduce the size of all the restraining walls
and the co walls and which is drawn here. The basement plates
of this building is 4.5 meter solid concrete. Being so close to the
sea and this site doesn't have a real solid rock base. So making
a thick platform will keep the building in balance. Then the next
issue different in Panama because of its height is related to surface
engineering, mechanical, electrical engineering and the question
of openable windows and façade design. Right from the beginning
it was decided to have complete central installations. This will
economize the use of energy because one can balance the use
of energy of, for example shopping center, with living in different
hours of the day and use heat from one to cool another parts.
Every flats, every room is fitted out with fan coil units connected
to main hot and cold water system from a central plant. These
96 GYODER
16-17 Haziran 2010
fan coil units are locally adjustable - uh - to control temperature.
The façade is a curtain wall façade because of its lower weight and
concept of design based on the colors in air and sky and in sea,
different sea levels in the local situation. The main design factors
for the façade design are the winds and seismic forces, resistance,
speed of construction, air and water tightness, solar resistance
and of course the inlets. Because of speed of construction a floor
to floor, single panel construction is opted because it can be
constructed floor after floor at the local level, you don't have to
access it from outside continuously. Further there is a clinging
beam system one for every tower from which the clinging cradles
can be hung to clean and to replace glazing panels that might be
broken. The conditions in Panama are quite extreme in the sense
that most of the year, the temperature mid day, is about 30 to
32 degrees at night 21 and the humidity is 80% or higher. So we
have to control the condensation when on the inside typically in
Panama, it is sometimes the coldest country in the world because
they have temperatures of 18 degrees on the inside which makes
you put on a sweater and you get condensation if you don't have
the right design of the façade and sealing the façade completely
from the outside, if a sealed and dehydrated glazing units and
fully thermally broken carpentry. Of course the solar radiation is
an important factor although Panama is almost on the equator
and most time of the year, most part of the day, the sun is right