All the waste wood, bamboo, stone boulders and debris from house construction and mud were used with Bamboo as the main construction material in the most innovative manner. The office is a zero energy development, with closed loop systems for building materials, processes and technologies.
Bamboo Symphony is the office of Manasaram Architects. Hence, the basic requirement of the project was to embody all their design and other philosophies in the building along with other requirements of space and services. The office was built adjacent to the principal architect’s residence on a very tight budget.
The office has an open plan with four split levels, all overlooking a central pond. The principal architect’s cabin sits at the bottom level, ensuring visual connectivity across all the spaces. The structure draws inspiration from the traditional fishing platforms in India, a truly synergetic structure. Slender bamboo columns harmoniously define the spaces but give a feeling of extreme lightness.
The project is a result of intense two years of research project, resulting in a bamboo reinforced slab supported on round bamboo columns and beams, in an economic and innovative manner.
The columns in Bamboo Symphony though look haphazardly placed, have definite size, position and inclinations i.e. they are 100% structurally relevant, just like the highly evolved technological logic we find in nature. The inclinations in the column members utilize the inherent tensile strength of bamboo.
The unique roof is a bamboo reinforced slab with bamboo fibre reinforced concrete (BFRC) (Chicken mesh + Bamboo split mat at 150mm c/c + 6 mm reinforcement bars at 300mm c/c + Water proofing layer). Appropriate amount of bamboo fibres was mixed in concrete for better bonding and reducing surface cracks. This also reduced the weight of the slab while maintaining the effective depth and increased its structural integrity and tensile strength many times.
We allowed the roof to define its own shape as per the flow of the forces naturally, like a stretched fabric over the supports. The freeform shell roof gets its shape by the neutralization of forces within the slab, so it poses fewer complexities, with efficient use of materials. Roof was allowed to take a natural shape over the bamboo supports - no formwork used for shaping the roof.
Use of locally available materials for construction: Bamboo from local bamboo market, mud excavated from the site, locally available stone for masonry walls and recycled materials, namely fly ash, recycled wood, scraps metal, stone, debris, plastic bottles, PVC pipes have proved quite cost effective.
Rain water harvesting: The water pond was built with the intention of humidifying the atmosphere which also helps in maintenance of the bamboo members besides recharging the bore well. Extensive with 50,000 litres capacity rainwater harvesting, the pond is landscaped with a rich variety of locally available water plants and lilies. The existing slope was transformed into a landscaped waterfall directing the rainwater into the lotus pond.
Ventilation and thermal comfort: Building orientation and roof form allow for strong North-East and South-West winds to blow over the structure, without any strong drafts inside the building despite it being fully open on the South side. The building is thermally comfortable throughout the year and is aided by below ground level construction.
Lighting: The building is 100% naturally lit throughout the day. Daylight pipes made from 6”PVC plumbing pipes have been introduced in the slab for areas deeper than 3m and clerestory windows along the entire north facade bring in natural light.
Onsite Renewable Energy: 1 KW Hybrid Solar Wind power generation meets approximately 20% of the power requirements.
Project: Bamboo Symphony
Project Type: Office, Manasaram Architects, Bangalore
Architect: Ar. Neelam Manjunath, Manasaram Architects
Built up area: 210 sq.m
Year of Completion: 2010
This article was first published in January 2017 issue of Surfaces Reporter.
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