We propose to remodel the whole riverbank with a multifunctional greenbelt. The greenbelt contians agricultural uses, so called „Kebuns“ and a protective belt out of trees, recreation areas with gathering, market areas and large open green spaces as flood cache. Right behind the greenbelt the stepped block structure starts; first with a high step to disconnect the very low riverbank from the urban space and avoid building on the riverbank due to its frequent flooding. Different steps in the topography define different floodlevels and allow the sewage system to work just with gravity. New central roads now can be accessed by cars in case of emergency. The new units can be easily integrated to the existing building structure due to their flexibility, also be separated into small and autonomous pieces. We see our project as a process starting with a big infrastructure intervention, the clearing of the riverbank and a few units which number increases over time.
Mind The Step The interventions we propose in the first stage focus on the areas that are annually hit by heavy flood and need to be changed immediately. Like in our earlier proposals we keep the greenbelt along the river and the step system inside of the Kampung; the first big step seperates the green area from the urban area. We widen the river to average 25m and lower the riverbank so it becomes very sensitive to changes of the waterlevel and is safe of beeing build on. Inside of the Kampung the topographical changes due to the step system are conquered by ramps and stairs, which control the traffic and create new open spaces at the crossings of the ne street system; stepping down to the river only stairs are used to keep the riverbank free of vehicles.
During the site visit at Kampung Melayu, our group saw a clear quality at the river banks of the Ciliwung River which is due to an amalgamation of the presence of open spaces, vegetation and amenities which draw people to the river edge for recreation. This quality diminishes as we proceed to the interior part of the Kampung due to the high density and lack of open space. Bearing this in mind, our design approach tries to enhance the quality in the Kampung by introducing so called pockets of open space between the newly introduced building typologies. One of these pockets is seen as a semipublic space shared and maintained by one building cluster.
We want the ground floor and its activity to adjust to the dynamic topography (including flood surface). On the Kampung level that means that buildings, street live and vegetation adapt to the topological properties of their location. A first intervention will therefore be to clear the river edge of buildings according to the very low topography and to create a buffer zone for the flood. The inner of the kampung will be cleared according to the adaptability of the buildings to the topography. Some of them will be replaced by public open space, some by pekarangans and some by new buildings. The new building clusters will be connected and accessed by balconies. During flood the balconies become the level of the public space where live happens and the goods are traded.
The Unit Meets The Block The unit-toolbox is now ready for action in the block. The modular units occupy now a parcel of land right next to the Ciliwung River behind the proposed greenbelt. In this frequently flooded area the ground floor contains just contemporary that can easily change its location during flood season. The ground floor also provides space for a sewage water treatment unit. Housing takes place in the higher levels. The different flats share one staircase unit and wet-wall unit, but every flat has its own bathroom an kitchen.The building cluster is two-sided. On the one hand the living units face the streets and the river bank and on other hand the private balconies and terraces face the inner courtyard.
Facing The Block We propose a terraced block structure, elevating to the center of the block, the mosque and the great market. Different steps in the topography define different floodlevel, organize the block, allow the sewage system to work just with gravity, make it easier to plan and structure evacuation. The Peninsula, that is hardly disconnected from the accomodation on the opposite riverbank with schools, administrative buildings and proper infrastructure becomes connected to the other side with two new bridges. The sub-blocks for the new modular building structures are defined by the terrace steps an the streets. Starting with a low density the clusters become more dense as safer the area gets from flooding. The new units can be easily integrated to the existing building structure due to their flexibility and their possibilty to be separated into small and autonomous pieces.
Thrown In At The Deep End Construction-based thoughts lead us to the first idea of a design for a unit in the Kampung Melayu. Starting with a very small infrastructure module located in the base of the unit that should incorporate all basic functions like a sewage system and a fresh water supply we went on designing the unit out of very tiny modules that can easily be brought to the construction site by manpower due to the lack accesibility by cars or trucks. With our toolbox of different units like e.g. the staircase unit, the housing unit, the wet-wall unit etc. we want to provide a flexible and adaptive system that can be fitted to the very different building sites inside the Kampung.