Bamboo is the plant that absorbs the most carbon dioxide during its life cycle, it is ready to be used for construction in about 3 years and grows much faster than any tree species. Netherlands Environmental
Assessment Agency shows that China has already become the predominant source of carbon dioxide, the main global warming emission. The use of bamboo in this context is very current, especially because the site is near to the Forest Sea of Zhejiang, therefore bamboo is a natural resource of Baoxi Longquan. For the structure of the Energy Efficient Bamboo House we explored new ways of building using bamboo as a construction material. Sustainability for us is not only the use of natural materials such as bamboo but to design appropriate construction solutions. Based on our experience we approached sustainability by:
- Designing dry-mounted connections not to weaken bamboo through perforation nor fill it in with concrete, and also to allow the replacement of bamboo poles if needed;
- Designing aluminum connections light and easy to assemble in order that the construction can be done by local workers;
- Using same length of bamboo poles to achieve standardization and best quality control;
- Combining bamboo (vegetable steel) and steel to create an industrialized construction system;
- Applying a precise geometry (Golden proportion - Aurea) to achieve standardization of the pieces, best quality control and harmonic visual impact.
Starting from Bagua we organized the spaces of the house in order to offer the best orientation for improving life by receiving positive energy (Qi). Nine squares compose the areas of each floor of the house. The patio is an important space where energy flows and fills in the house with it. The interior spaces are mostly open-plan with minimum amount of division walls to allow positive energy (Qi) to flow freely. Qi must enter slowly and move around the house then come out after giving benefit to all areas of the house without ever stagnate inside.
The house was designed on a modular grid, 9 squares as Feng Shui suggests. All pieces of the house will be modular as much as possible envisioning an industrialized production. We applied the Golden Proportion (Aurea)ideal for modularity. Our challenge was innovation of bamboo construction!
GROUND WATER COOLING
Using the underground water is for the house the most interesting and sustainable solution, using a geothermal heat pump, which cools as well as heats the house. It's incredibly efficient compared with the usual cooling and heating systems — at least 25% more efficient, and often much more. This means substantial savings on utilities. The system relies on a natural phenomenon. By digging into the earth the temperature is stable no matter what the season, no matter what the temperature above ground. By taking advantage of this more constant, even temperature, we can heat or cool the house. It is estimated that these systems use 15% less of the amount of energy a traditional chiller plant would use.
The materials and colors for the house are:
- Bamboo and aluminum joints for the main structure and for the interior finishings;
- Rammed earth walls for the ground floor which holds the technical room and for landscape walls;
- Chinese clay tiles grey color for the exterior walls;
- Terracotta clay for the roof;
- Water for cooling;
- Plants for the terrace and garden;
- Sun and wind as intangible natural materials.
Gross Floor Area (mq)320
ArchitectsArch. Mauricio Cardenas Laverde – Studio Cardenas Conscious Design
Design teamArch. Mauricio Cardenas Laverde team leader and author of BooTech construction system Preliminary Design: Arch. Mauricio Cardenas Laverde Ing. Monica Tengattini Arch. Alberto Chignoli Arch. Laura Di Donfrancesco Designer Alessandro Panaia Internship Gloria Gusmaroli Mrs. Dandan Wang, Shanghai – local support Definite and Detail Design: Arch. Mauricio Cardenas Laverde Ing. Monica Tengattini Arch. Alberto Chignoli Arch. Laura Di Donfrancesco Designer Alessandro Panaia Mrs. Dandan Wang, Shanghai – local support Changes during construction: Arch. Mauricio Cardenas Laverde Arch. Gaia Dal Cero Internship Marcos Romero Mrs. Dandan Wang, Shanghai – local support In cooperation with Kangye Architecture and Interior Design Institute, Shanghai Construction phase supervision: Arch. Mauricio Cardenas Laverde Ing. Monica Tengattini Mrs. Dandan Wang, Shanghai – local support The Plan Award presentation: Arch. Valeria Varesco Arch. Alessia Taghetti
Main ContractorKangye Construction & Decoration Co., Ltd. Shanghai
ConsultantsKangye Architecture and Interior Design Institute, Shanghai – normative locali, mockups, direzione lavori Vincent Fang – Feng Shui
Photo CreditsLIB – Longquan International Bamboo Commune Arch. Mauricio Cardenas Laverde
Curriculum studio / partecipanteMauricio Cardenas italian born at Bogota Colombia, graduated from Universidad de los Andes Architecture School, Master at Syracuse University and Ph.D on sustainable design at Politecnico di Milano Architecture School. During his career worked in top level international offices such as Meiji Watanabe & Associates in Tokyo, Renzo Piano Building Workshop in Paris and leader of Arup Façade Engineering team in Milan. In 2004 started Studio Cardenas Conscious Design in Milan, creative workshop leader in research and use of sustainable materials and development of innovative construction techniques. In 2011 Bootech dry-mounted bamboo construction system was awarded with the prize "Italia degli Innovatori" (Italian of Innovators) by the Agency for the Diffusion of the Technologies for Innovation of the Presidency of the Italian Council of Ministers. Ongoing projects in Italy, China and Colombia. Is professor in Politecnico di Milano and visiting professor at Tongji University in Shanghai.
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