Eco'N'Home participative housing wood/straw

Last modified by the author on 11/05/2020 - 16:03
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New Construction

  • Building Type : Terraced Individual housing
  • Construction Year : 2012
  • Delivery year : 2016
  • Address 1 - street : ZAC Monconseil 37000 TOURS, France
  • Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.
  • Net Floor Area : 699 m2
  • Construction/refurbishment cost : 1 385 000 €
  • Number of Dwelling : 6 Dwelling
  • Cost/m2 : 1981.4 €/m2

Proposed by :

  • Primary energy need
    93.66 kWhep/m2.an
    (Calculation method : RT 2012 )
Energy consumption
Economical buildingBuilding
< 50A
A
51 à 90B
B
91 à 150C
C
151 à 230D
D
231 à 330E
E
331 à 450F
F
> 450G
G
Energy-intensive building

The project concerns the self-promotion creation of 6 strip dwellings on the Monconseil eco-neighborhood of the concerted development zone in Tours.
This housing construction program was based on the participative housing approach and meets the wishes of the project leaders to limit the environmental impact of this structure through the use of biobased materials and the Passive Buildings objective.

The key words that guided the project are: "high performance, ecological habitat, sharing and sharing". These objectives, which brought together and federated from the beginning the project leaders, are always present at the finish and are translated on the architectural level, functional and on the constructive mode. Achieving such a project is a question of will. Each member of the collective has contributed to the building. Built as much consensus as consents, it is the culmination of a long-term work that is emerging here.

Sustainable development approach of the project owner

  • a compact habitat, efficient passive, healthy, ecological and perennial
  • a habitat with reasoned living spaces: build only the essentials and share certain spaces by giving them the capacity to fulfill multiple functions.
  • a reasonable final cost and à la carte housing to promote social and inter-generational diversity

The choice was made to realize the entire construction wood frame and insulation straw (walls) or wood wool (roof box), according to bioclimatic principles. The thickness of a straw boot allows, in itself, to achieve considerable thermal performance. A wood wool interior lining completes the acoustics of the project.

Architectural description

The choice was made to realize the entire construction wood frame and insulation straw (walls) or wood wool (roof box), according to bioclimatic principles. The thickness of a straw boot allows, in itself, to achieve considerable thermal performance. A wood wool interior lining completes the acoustics of the project. The exterior cladding is still under discussion with the City of Tours for a perfect integration of the project into its immediate environment. A so-called "shell" pose is envisaged to animate the facade and give the appearance of a single housing unit.

See more details about this project

 https://www.basededonnees-habitatparticipatif-oasis.fr/wakka.php?wiki=EcoNHome#menu1

Photo credit

If not specified: Envirobat Center

Contractor

Construction Manager

    R-Architecture Caroline SCULFORT

    06 41 95 08 07

Stakeholders

    Construction Manager

    R-Architecture Caroline SCULFORT

    06 41 95 08 07

    Construction manager and architecture

    Thermal consultancy agency

    Baticonsult

    0218.0617.83

     http://baticonsult.com/

    Thermal study and infiltrometry test

Energy consumption

  • 93,66 kWhep/m2.an

    • RT 2012

Envelope performance

    - Peripheral walls: (Rain cover Agepan DWD, I beam construction system and compressed straw boot, Fermacell + insulated technical vacuum in wood wool), thickness 4.6cm / 35cm / 1.8cm + 4cm, U = 0.17 W / m²K
    - Low floor: (PES slab on sanitary void, extruded polystyrene insulation under-screed), thickness 30cm / 12cm, U = 0.15 W / m²K
    - Roof terrace R + 1: (complementary external insulation + roof waterproofing, wood wool in roof box, bracing), thickness 8cm / 30cm / 18cm, U = 0.09 W / m²K
    - R + 2 creeping roof: (uncoiled wood wool), thickness 30cm, U = 0.13 W / m²K
    - Penthouses in R + 2: (OSB board, soft wood wool, insulated inner lining in wood wool), thickness 1.2cm / 15cm / 10cm
    - Double glazed joinery: (wood / aluminum), average Uf of 1.05 W / m²K
    - Triple glazed joinery: (wood / aluminum), average Uf of 1.6 W / m²K

    n50

  • 0,50

More information

heating: 14.6 kWhep / m².year. Average over the entire structure. Depends on dwellings, compactness, orientation, glazed area, etc.

Systems

    • Electric radiator
    • Wood boiler
    • Solar Thermal
    • No cooling system
    • Double flow heat exchanger
    • Solar Thermal
    • Wood boiler

    Heating and Emitters: Bioclimatic design favoring the solar gains with diffusion of the heat by the VMC double-fluxAppoints electric towel-drying in the parts of water (1 housing envisages a wood stove with weak power)

    Sanitary Hot Water: 3 homes have a thermodynamic balloon, 3 have solar thermal panels connected to an individual solar water heater

Urban environment

  • 699,40 m2

    • The accommodation Eco'n'home is located in the Monconseil district of Tours. The area is very well served by public transport and has many historic pavilions. Local shops and a chapel and a garden are under construction.

Product

Construction and exploitation costs

  • 1 385 000 €

Water management

    3 homes have solar thermal panels connected to an individual solar water heater.

Comfort

    The thickness of a straw boot allows, in itself, to achieve considerable thermal performance. A wood wool interior lining completes the acoustics of the project.

    The thickness of a straw boot allows, in itself, to achieve considerable thermal performance. A wood wool interior lining completes the acoustics of the project.

Life Cycle Analysis

    Wood, wood wool, straw, earth rendering. Eco-materials account for about 42% of the cost of construction. Materials used Structure: Wood, Insulation: Straw, wood wool Interior design: False ceilings in wood wool and plaster on 2 dwellings Analysis Bio-based materials Project floor area: 699.4m² Total weight of MBS implemented: 74 Kg / m² Non-wood mass work and layout: 46 Kg / m² Does not take into account the earth coatings implemented in 2 dwellings

Reasons for participating in the competition(s)

In order to minimize the consumption of primary energy and non-renewable resources, attention was paid to the use of biobased materials and the absence of conventional central heating. The carbon footprint of the final construction is close to zero. These ambitions were translated from the design phase of the project and the study on overall performance conducted by the design office helps to highlight their impact on the project and its environment.

Building candidate in the category

Bas Carbone

Bas Carbone

Prix du public

Prix du public

Prix des Etudiants

Prix des Etudiants

Green Solutions Awards 2019 - Bâtiments France
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