During the design process attention was mainly focused on locally available materials and weather conditions. The starting point was to realize a building using materials and skills from within a 15 miles radius around the site. Bamboo, hand-shaped brick, Mango wood, reused steel, local mortar and wafer-thin recycled corrugated panels are the main materials used in the building. The drive was to encourage locals to become aware on the basic principles of sustainability and durable building concepts. In effect close to zero electricity or fossil fuels were used during construction and other necessities required for erecting this building.
The plan is East-West oriented and consists of two volumes under a large bamboo roof construction. The classrooms and lavatories are positioned on the South side and on the North side we find the workshop with store. Two sight lines traverse the building in all four directions. The lifting of the roof high above the volumes has achieved a considerable reduction of heat build up within the spaces. Further cooling is provided by cross ventilation, surrounding vegetation and the nearby pond. With the completion of this striking design the architects have proved that conventional local resources and materials can be used to build successful environmentally friendly unconventional architecture.
From a bioclimatic point of view the orientation of the building allows to emphasize the natural cross ventilation, which prevents costs with electric fans. The roof of the building is suspended to both sides (East and West) providing shade, protecting the biggest openings against rain and collecting rainwater into the courtyard. The concept is to combine and optimize local techniques with local materials. For this the strategy is to participate in the evolution and modernization of the local construction processes without a rupture in the ‘’know how’’ of the population.
The dimensions are chosen with great care, in such a way that direct sunlight into the classrooms is minimized still providing in optimal daylight illumination. Also the use of nearby ponds for natural draft to cool the classrooms was taken into account in the design. The techniques use for this project are also very easy to learn and diffused by the main contractor, which will contribute to the local construction modernization. This application of local bricks is less expensive and reduces the use of construction wood by combining bamboo with thin concrete floors. This minimizes the shortage of wood in Bangladesh as well future maintenance costs.
Pani Community Centre, Rajarhat, Bangladesh
Program: community centre
Design team: Gerrit Schilder, Hill Scholte
Structural engineer: PT-structural
Cost: €44.000, (excl. VAT)
Area: 910 sqm