The two main problems of the kampung is the rapid growth of population and the missing infrastructure to live in a safe and stable environment. Our idea is to give the people an infrastucture core upon which the people have the potential to grow and build. Like the stem of a tree and its branches providing shelter. While growing vertically the footprint of the building becomes smaller and allows space for nature and recreation. The proposed vertical infrastructure gives the people the opportunity to deal with the different flood levels of the Ciliwung river.
The structural concept is a concrete table for the first floor, which stabilizes the building against the horizontal forces in case of flooding. The upper floors consist of a lightweight framework construction in bamboo with a concrete core, which stabilizes the whole structure. The core is also the location of the entire fresh and black water infrastructure whereas the rainwater is collected and stored at the top and then used and reused on its way down through the sanitary equipment. Depending on the building‘s location in one of the different flood zones, the height of the concrete base can vary. The concept of the building is to provide the structure only, leaving the spatial organization of the rooms up to the residents.
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.
Our aim is to deal with the fact of loosing the control of the ground floor with its normally functioning as circulation, working and public space during flooding. The units designed for this purpose provide a new circulation level. Unit:The construction is a very elementary pillar-slab construction in concrete. The units variate slightly in three types, having on the first floor either a totally open public floor, a semi open public space or an inner private closed core and a surrounding public circulation space. The ground floor can be used for public or temporary uses, which can easily be given up during flooding. The upper floors are convenient for living and sleeping rooms. The different types of the unit are supposed to work like a puzzle, providing a continuous public space for circulation which can be activated during flood period. Pontoon: To complete the circulation system over a street we designed bottle pontoons, which can be easily used to cross the flooded street and to connect the several open spaces on the first floor of the units.
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.
Type 1:In Case of flooding, the workspace will be moved to the first floor. The violent flooding has taken apart the temporary constructions on the ground Floor. The units closest to the water come with deep point foundations, analog to constructions in the Netherlands. In a worst case scenario, at least the steel skelleton should survive the flooding.Type 2:To enable natural cross ventilation, the apartments reach from one facade to the other.. A reduced building structure meets the basic needs of the residents and can be extended horizontally and vertically. The compartmentation of rooms and the arrangement of the facade is left to the owner of the apartment. The participation of the residents leads to an identifying process.
The concept for our unit is the mobile public space. The unit is made of a concrete grid. The ground floor is completely open and has a temporary use for markets or sport places. Above the normal flood line are two housing floors. There the concrete grid is filled up with a light bamboo construction. The third floor has a semipublic function, because the water tank and all the sanitary services are located there and they are used by 4 or 5 families together. The temporary uses from the ground floor can move up to the roof level during the flood. The connected roofs create an emergency exit to the dry areas. We don’t built new units right next to the river, where the flood goes up to 6 meter.