4 Sustainability The cooperative prioritized making a With regard to the reduction of demand, building with minimal environmental on the one hand, the surfaces of homes impact, both in its construction and that need high comfort have been itslifetime. Another basic objective is reduced and transferred part of the to eliminate the possibility of energy community spaces where the demand poverty among its users, which some of associated with the comfort is more them suffered due to the high cost of discretionary. The passive bioclimatic energy and lack of economic resources. strategies have been developed to the The initial strategy of the project to fullest extent possible. Firstly, the patio reduce energy demand has been the covered with a greenhouse that allows optimization of the program, renouncing to capture solar radiation in winter and the underground car parking, grouping have a chimney effect designed to force services and reducing the surface of the ventilation in the summer. The design houses. also included a good tightness to the air of doors and windows, working with the At the design level, the maximum inertia of the materials and an emphasis bioclimatic parameters have been on the thermal insulation. introduced to achieve a very passive building, with solutions that involve La Borda also has a centralized system active action by users inthe climate for thermal generation for hot water management of housing. The result is an and air conditioning by means of a biomass boiler, allowing optimization therefore, the comfort in the houses with of the production infrastructure and the least associated cost. improving performance and technology at the service of the entire building. At The first action to significantly reduce the the same time it is possible to have an environmental impact of the building energy consumption without fossil and was to not conduct underground totally renewable materials. parking for cars. Only direct impacts on construction and use at 75 years will allow savings of between 500 and 800 tonnes of CO2. In addition, this strategy Derecha / Right: entailsa direct benefit in sustainable En este esquema quedan patentes conceptos como: mobility and in reducing the ecological SOSTENIBILIDAD: galerias,patio cubierto y máximas footprint of the inhabitants. alturas para conseguir el mejor compartimentos bioclimático. DENSIFICAR LA FACHADA SUD: Conseguir el máximo número de viviendas con condiciones ótimas de The structure of six floors is done using captación y asoleo. Cross Laminated Timber wood (CLT). This ENTRE MEDIANERAS: volumetria que reconoce y respetalas medianeras con los vecinos. is a lightweight, high quality, renewable PATIO CENTRAL:el corazón del edificio, espacio de material in the environment that allows circulación, acceso, relación y convivencia. closing cycles, unlike conventional In this scheme, we can observe concepts such as: SUSTAINABILITY: galleries, covered patio and maximum construction materials such as steel or heights to get the best bioclimatic compartments. concrete, whose production has a very DENSIFY THE SOUTH FACADE: Get the maximum number of houses with optimal conditions of sunning. high energy cost and are not renewable. BETWEEN MEDIANERAS: volumetry that recognizes and La Borda is currently the highest building respects the neighbors. constructed using wood structure in CENTRAL PATIO: the heart of the building, circulation space, access, relationship and coexistence Spain. 81441t almost zero energy consumption, and