Stakeholders

Function : Contractor

CO.RE.COM srl

Corso Barolo, 48/A, Alba (CN)

Function : Designer

Arch. Aimaro Oreglia d'Isola - Isola Architetti srl

Via Mazzini 33, Torino (TO)

 http://www.isolarchitetti.it

Function : Construction company

Franco Barberis Spa

Corso Barolo, 48/A, Alba (CN)

 http://www.francobarberis.it

Owner approach of sustainability

In recent years the issue of saving energy in buildings has assumed primary importance both because of commitments made by various organizations at international level to respect the parameters related to CO2 emissions, and of the constant increase of global energy use and costs of conventional energy sources. For this reason it is imperative for designers and builders to consider the goal of minimizing the needs for traditional fuel, using the renewable energy sources, reducing losses of the envelope, and improving the efficiency of production cycles. Given these premises, the project aims to create a building with a very low average consumption through a mix of solutions and technologies to guarantee high energy efficiency.

Architectural description

The character of the new quarter 4.4 C in Alba is identified by a large ring that opens on Europe Street. Born on a flat terrain, which does not have any kind of constraint, and was once farmland. They still perceive the signs of agrarian division, channel, parcels and catastal lots: these are important views that are generally taken by the organization of the buildings in plant, which are arranged in line on the ground, tracking and tracing these plots. The whole composition is organized around this straight and curved geometries game, the intersection between the linear features of the buildings and the grand green avenue of distribution. The residential building of 5 levels plus penthouse has plan dimensions of approximately 5000 m² and houses 50 dwellings of different sizes, and consist mainly of: - Apartments with kitchenette and living room, bedroom and toilet disengaged; - Apartments of two bedrooms, living room, kitchenette and toilet facilities; - Apartments of three bedrooms, living room, kitchen and bathroom. In the basement there are 50 wineries and 69 garages. The long facades are divided and marked on one side by external stair towers and the other side by lodges in metal structure applied to the facade.

Energy consumption

• Primary energy need : 9,83 kWhpe/m².anno
• Primary energy need for standard building : 86,85 kWhpe/m².anno

Calculation method : UNI TS 11300

Envelope performance

• Envelope U-Value : 0,28 W/m²K
More information :

The external walls above ground were cavity-wall of the variable thickness from 50 to 55 cm with external finish consists of facing of split colored concrete blocks, on which has been executed a rough coat on the inner side, and internal facing performed with blocks Poroton. The insulation of external masonry of the building consists of glass wool panels from 18 to 28 cm (λ = 0.036 W/mqK) while, to avoid a possible thermal bridge, in correspondence of RC structures (floors and columns), was glued a layer of insulation of 10 cm consisting of polyurethane (λ = 0.024 W/mqK). With regard to the building shell indented from the wire building, i.e. those of the lodges and those facing the stairwell, they are made with block Poroton and coating with thermal insulation obtained with the use of the Thermal Protection System Integral STO Therm. The same system of thermal insulation is applied to the soffit of the floors of the balconies and terraces. The floor of the attic is protected with a layer of 12 cm STIFERITE GT24, which was created on a slab of concrete about 6 cm. The PVC windows profile INTERNORM model DIMENSION + prof. 80 mm with doubleglass ibe-light (2UP), 4 be/16Argon/3/1F/3, horizontal beams 40 mm, ensuring an exceptional thermal and acoustic insulation.

• Building Compactness Coefficient : 0,36

Indicator : n50

• Air Tightness Value : 0,35

Systems

Heating system :
• Geothermal heat pump
• Low temperature floor heating
Hot water system :
• Heat pump
Cooling system :
• Reversible heat pump
• Floor cooling
Ventilation system :
• Double flow heat exchanger
Renewable systems :
• Solar photovoltaic
• Solar Thermal
• Heat pump (geothermal)

GHG emissions

• GHG in use : 4,00 KgCO₂/m²/anno
Methodology used :

Casaclima

Product

Product category :

Construction and exploitation costs

• Renewable energy systems cost : 140 000,00 €

Urban environment

The building is located in Alba (CN) in Avenue Masera, and it is part of the area C 4.4 (78,437 square meters) which is the subject of a detailed design for construction of residential areas of relevance to private and public square.