& Construction Documents
Dietmar Leyk mit Petra Wollenberg, Laura
Climate Engineering, Stuttgart
| Syz Real Estate, Zurich/Jakarta
In Kemang, a neighbourhood in the southern
part of Jakarta, four high-rise buildings form a new residential ensemble.
Their shape and positioning make maximum use of the very narrow plot of land.
The staggered arrangement of the buildings provides the 940 apartments with
optimal daylight and visibility conditions. Landscaped green terraces define
the boundaries of the park and provide privacy from neighbouring buildings.
To ensure good ventilation of the park, the
ground floor remains structurally unoccupied in large parts. The floors of the typical
20 storeys above are organised very compactly around an optimised inner access
core. The apartment floors have a modular layout. The load-bearing walls and
columns allow a flexible and adaptable division into different apartment sizes
and types. All four buildings are equipped with an innovative air-conditioning
concept, so that the usual local decentralised air-conditioning systems per apartment
can be dispensed with. Further air-conditioning measures are expected to result
in significant energy savings compared to conventional high-rise residential
buildings in Indonesia. Due to the geographic location of the building, a
variety of sunlight studies have shown that the solar load on the façades is
evenly distributed throughout the year. Due to the wide cantilevered horizontal
louvres, the solar radiation is reduced to such an extent that only a few
additional climatic measures are necessary. The concave shape and slenderness
of the slats make the buildings appear very light, despite their large mass.