Manubuild - Carabanchel 34

The Madrid council´s housing programe has developed and constructed this dwellings block at the Madrilian neightbourhood of Carabanchel. The building, designed by Ruiz-Larrea & Asocciates architects has been certified as Passivhaus Classic. The aim of Ruiz-Larrea & Asociates in the project has been the energy efficiency design, the air interior cuallity and a high confort standards of the project´s units. The Project is technicaly solved by constructive systems which main goal consist in achieving PassiveHaus standards (ETICS -External Thermal Insulation Composite Systems-, ventilated façade, high performance framing,…) and minimazing heating and cooling demands by the careful resolution of the thermal bridges resulting of dealing with a existing structure. The structure adaptation to the standard´s requirements has, as a result, a nearly zero-energy building (NZEB) with a 60% redution in the energy´s demand and consumption. The main criteria to achieve an NZEB are based on the Passivhaus construction standard. Passivhaus is the most demanding cetificate regarding confort and energy eficiency. A Pasivehaus building are caracteristic defined by those who heat and cold the air flow to achieve an proper ventilation of interior spaces

The competition brief asked for 25 dwellings from 1 to 2 and 3 bedrooms and common áreas. The main purposse of the development is to solve a lack of public rental housing. Due to the architectonic organization and the plan distribution, the blowerdoor tests are solved with a unic thermal envelope with 5 thigtness lines and one single test by plan where all the houses per plan are connected. This way, the number of test has been reduced with a possitive impact on the construction costs. Bioclimathic design criteria have been considered as well as energy eficiency systems, ecoconstruction, and interior confort solutions (air quality, allergen and VOC volátil organic compoundsfree interiros), and proper water management and use. The housing block, designed with bioclimatic and sustainable criteria, is organized arround the communication core (stairs and accesible elevator) that links with a distribution corridor facing North. This situation permits the houses to enjoy double orientation (northsouth) in its façades, impruving natural ventilation.

The main vertical structure is built by concrete pillars until the ground floor, being from the ground floor in two types: a concrete structure and a steel structure for the facade. The floors are made by a bidirectional concrete floor. Hihg interior thermic confort, in cold seasons as in summer. The confort values ase 20-25*C. High interior air quality guarranted douring 24h a day. The quality of the construction to minimice the thermal bridges, infiltrations, surface condensations. Compared with a building fullfilling just the building´s standard codes, Passivehaus is reducing the energy demand in a 60%. The sustainable energy used is Thermal solar to fulfill with the basic requirements of the common standards. 8 pannels have been instalad y two rowa, with a single capacity area of 2,51 m2 and an static dissipative of 9kW per row. It si supported by a condensing boiler of 60kW, with an plate exchanger and two 1000.