Cindy Aliffia, Yudha Kartana Putra, Yeo Jiahao, Bettina Dobler, Andreas Haeni
The main goal is to improve the living quality in the flood-affected areas inside the Kampung while densifying it at the same time. Due to this densification it is necessary to build enough free spaces. Therefore we propose three different kind of built open spaces:
1. Open Spaces at the River (Wall Gardens at the embankment area and dense four to six story houses on the erosion-side). 2. Streets as Open Spaces (Widened Streets in order to handle the traffic and to allow access to the infrastructure services such as trash collection and drinking water supply). 3. Open Spaces inside the Block in order to bring enough light and air inside the units.
As of right now the river is perceived as dangerous and a place where the poorest of the poor live. This notion of the river has to be fundamentally changed in order to revitalize it and its bounding areas. This re-thinking is achieved by up- grading the river front buildings in an all new building structure. Through this measure people will learn again to appreciate the river and its river banks. In order to respond to the requirements for each block, we have to divide them into smaller subblocks. Each subblock organizes the garbage collection and the drinking water availability for its own use whereas the rainwater is collected in each unit and used for domestic use only (graywater). Every subblock with a boundary along the river edge is responsible to clean this graywater and then drain it into the river.
The two blocks, one north of the Ciliwung River the other one on the south side, are differently affected by the river. The northern block touches the water on relatively short stretch where as the southern part has a large part of its boundary along the river edge. Both are in part flooded during the wet season, yet both of them have some areas which are high enough for keeping the water out and reducing flood damages to a minimum. First and foremost it is necessary to allow the river to expand and to provide it with a predictable area to flood during wet season. For this purpose the most exposed houses along the river bank are being removed in order to gradually terrace the terrain. In order to master this drastic situation a garbage collection depot is to be implemented into each block, preferably at its highest elevation to keep it from getting damaged by the yearly flooding.
The main objective is first and foremost to provide the people living in the Kampung with a rigid, flood-resistent structure. Through the centrally located circulation area runs load-bearing wall, that runs from the ground level all the way to the roof. At the same time this wall is also used to hold all the utilities needed for a basic water supply. The rain water collected in a special container on the roof is hooked up to the water pipes running through the central wall. On every floor each unit has access to water by using the water running through the stare well wall. In order not to further contaminate the ground water and the river, a special micro-filtration toilet system is used as seen in schematic on the right. This system uses a biologically activated ultrafiltration-membrane that needs no further maintenance.