THE CONTEXT

A MATTER OF ENERGY, ECOLOGY, AND THE ENVIRONMENT

Current situation of residential buildings

Buildings built in Europe in the last 50 years amount to 50% of the total number of standing buildings.In Italy, residential buildings built after 1963 amount to 60.6% of the total.

Despite the decline in investment in construction (down from 2006 to 2013 by 32% in the construction sector in general, and 59% in residential construction), a new building cycle based on the redevelopment of the housing platform and on green energy technology has emerged in Italy since 2000.

Investment in residential construction amount to 23% in the redevelopment sector, compared to 11% in new constructions.

Investments in energy efficiency (FER) in the construction industry rose from 0.3% of the total investment in 2006 to 4.3% in 2013.

(Source: ISTAT)

  • 60%

    HOUSES BUILT IN ITALY AFTER 1963

  • 59%

    DECREASE IN RESIDENTIAL HOUSING CONSTRUCTION

  • 50%

    GROWTH IN THE RENOVATION OF EXISTING BUILDINGS

Situation in energy consumption.

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Buildings are responsible for consuming 40% of the energy used and 35% of CO2 emissions into the atmosphere.

While new buildings consume the equivalent of 3-5 liters of energy per square meter, (Classes A, B), older buildings consume the equivalent of more than 25 liters of energy per square meter. (Class G).

L’efficientamento energetico in Europa può comportare la diminuzione dei consumi del 5-6% e del 5% dell’emissioni di CO2.

In Italy, the energy efficiency of only the most “energivorous” buildings, which account  for 20% of all buildings, can reduce overall consumption by 12.6%.

Source: ENEA

Energy classes – Consumption per sqm. per year

Energy class per year of construction

The problem of waste in new buildings and renovations

About 25% – 30% of all waste products in Europe is represented by materials that  originate from  construction projects, including cement, bricks, plaster, wood, glass, metals, plastics, solvents, asbestos and excavated soil, many of which cannot be recycled.

 Every year in Italy 160 million tonnes of waste, corresponding to 260 kg. per year per person , are produced. Construction and Demolition (C&D) are responsible for producing 57 million tons of C&D waste, approximately 35% of the total waste (almost double of municipal waste: 57 against 32 million tons).

WASTE FROM CONSTRUCTION AND DEMOLITION  ARE ONE OF THE MAJOR ISSUES IN EUROPE

  • In the disposing of C&D waste, 49% derives from construction and from residential maintenance and renovation. Micro residential demolition is responsible for, 53% of this share.

The consumption of the soil

Due to urban expansion and development of the transportation infrastructures, land covering an area larger than the city of Berlin is lost in Europe each year .

This unsustainable trend depletes the availability of fertile soils and groundwater reservoirs for future generations.

The sealing of the soil, through its permanent coverage with impermeable layers of buildings, roads, parking lots, etc., causes an irreversible loss of ecological functions.

In Italy, in the last 50 years, the territory has been consumed at the rate of 90 acres a day, which correspond to about 10 square meters per second, which is almost equal to an additional 660,000 hectares over the next 20 years: a square , covering an area as large as the region of Friuli Venezia Giulia.

After the Second World War, the territory covered by concrete in Italy has quadrupled.

Source: ISTAT

What to do?

The actions with regard to existing buildings should aim to:

  • Increase energy efficiency: new buildings usually need less than 3 to 5 liters of heating oil per square meter per year.
    This can be achieved by use of the MAST, accompanied by appropriate interventions on the building (insulation of the external surfaces) and contextual interventions on the side walls (windows with high energy performance).
  • Contain and control the production of waste from C&D. The use of MAST and RE-USE techniques, through limited demolition, excavation and removal, allow to minimize the problem of recycling the materials from demolitions and excavations.
  • The renovation and efficiency of existing buildings comform to the intent of EU27 about the limitation of sealing and consumption of the soil and about the mitigation of the related effects.

Artena Housing’s new buildings are realized in bio-architecture, according to a construction method that ​minimizes the production of C&D waste, and are characterized by high energy efficiency, achieved through the use ​of renewable energy.

The houses ARTeNA are certified, in Italy as Class A CasaClima.

TECHNOLOGIES USED BY ARTENA HOUSING ARE:

  • wooden structure XLAM or steel profiles,
  • geothermal power plant/heat pump,
  • radiant systems for heating and cooling,
  • controlled mechanical ventilation,
  • photovoltaic system,
  • home automation for the management and control systems and networks, security, energy saving (building ​automation),
  • rainwater harvesting system

ITALIAN DESIGN FOR INTELLIGENT LIVING.