The Bourgoin-Jallieu SHE Project - Grenoble, FRANCE
OPAC38
Sustainable contents
- Harmonious relationship between the building and its surroundings
- Control of the working wastes and selective refuse process
- Strong thermal inertia masonry, use of clay bricks
- Creation of sunspaces in dwellings for passive solar energy
- 60 m2 thermal solar panels and 20 m2 photovoltaic panels
- Hot water provided by central natural gas heating
- Controlled exhaust ventilation (VMC)
- Electricity saving systems both for private and public areas
- Water saving systems: Double flow flush 3/6 litre, flow reducer and roof rainwater collector
- Waste management: Taking into account the local selective households’ refuses
- Repair and maintenance management
- Visual comfort: Natural lighting for dwellings/common areas
Description
Bourgoin "Diederichs" was a building construction project of 40 social dwellings and 21 studio flats for a young rugby players’ school accommodation centre, in the city of Bourgoin, which is 30 km far southeast from Lyon. Nearby the town hall, the concerned land estate is part of a larger land called « Diederichs area », which was originally a weaving loom making factories place. Today, because of the almost complete lifting of the place, it’s a site in complete redevelopment.
The area is drawn for numerous activities: the town intends to build and settle shops, services, a multiplex system, a bar, a multimedia library and a library, an outpatient clinic called “Vion Centre”, and a small public garden. A network of streets, and a pedestrian avenue were planned to serve all theses future buildings and activities. On the west of Opac38’s land estate, the Vion Centre, a one level building, is on work. The others constructions planned haven’t started yet. For information, 9 metres will be the maximum height of the multiplex system and multimedia library.
Buildings
It is a mixed programme with social collective housing, and accommodations for players from a young rugby school of the town of Bourgoin-Jallieu.
The collective housing is made of 40 dwellings for about 2700 m2, defined as following:
8 T2 of 48 m² (T2 = 1 bedroom, 1 living room, + kitchen and bathroom)
20 T3 of 65 m² (T3 = 2 bedrooms, 1 living room, + kitchen and bathroom)
9 T4 of 80 m² (T4 = 3 bedrooms, 1 living room, + kitchen and bathroom)
3 T5 of 95 m² (T5 = 4 bedrooms, 1 living room, + kitchen and bathroom)
The common parts will be parted into:
- A bicycle shed in each staircase
- Household refuse premises, of simple access for both the tenants and the refuse collection services
- On the ground floor, an Opac38’s warden office of about 20 m²
The young rugby players’ school accommodation centre programme will consists of 21 studios flats:
8 T1 of 20 m²
5 T1 of 25 m² (studio flat = 1 room equipped with a little kitchen and a bathroom with shower)
7 T1bis of 30 m²
1 T3 of 70 m² for the school manager.
The common parts for the sport centre are:
- a meeting room of about 50 m²
- a recreation room – foyer of 50 to 60 m² equipped with lavatory
- offices of about 15m² each
- a laundry room of 15 to 20 m²
The parking for the all building is:
- 35 parking places
- 25 garages (for the social housing needs)
Contructing themes
This new property deal has to reach an high quality level combining architecture, technology and environment. That’s why the project is in line with the regional programme SPIR (Regional Innovation Pole Sector) on the environment topic, and with a general sustainable development approach. The SPIR action plan includes a monitoring contract between the financing SPIR partners such as the Rhône-Alpes Region Council and the French government, and the Opac38.
The project is defined with the usual Opac38’s regional environmental partners of administrations and associations that are: Ademe, Ageden, Rhônalpénergie Environnement, Rhône-Alpes Regional Council, Isère Department Council. It is organised to ask contracting authority technical help from the consultant Olivier Sidler, Rhônalpénergie Environnement, and Ageden, who will assist the construction project team all over the implementation of the property deal.
The Diederichs building project is wanted to be implemented on an High Environmental Quality (HQE) framework. The HQE approach aims to:
Consider the whole lifetime of the building on a sustainable environment approach, taking into consideration building material, energy, water, health, comfort, recycling dismantling and destruction.
Control the environment impacts of the building thanks to an under control use of natural resources, a water air and soils pollution mitigation, a low rate of ultimate waste production and nuisances, and building satisfactory relationship with its immediate surroundings.
Create a friendly inside environment, by comfortable, safe, reliable, healthy conditions of life.
The HQE is a concerted constructing process. The environmental aspects must be integrated into every step of the process, including planning, design, construction, and management. The HQE method lists fourteen targets, ranked in four categories: eco-construction, eco-management, comfort and health.
A project is generally considered as an HQE process if 7 fully targets are implemented, and if the others targets are also considered as a minor part. So Diederichs project will have to reach these 7 following targets:
Eco-construction
Harmonious relationship between the building and its immediate environment,
Low nuisances construction site,
Eco-management
Energy management,
Water management,
Waste management,
Repair and maintenance management,
Comfort
Visual comfort
The aim is to implement standard comfort dwellings while reaching the lowest maintenance cost level mitigating thus as much a possible the “rent + maintenance costs” for the future tenants. It comes through a global cost approach of the building, including the cost of the construction in itself, but also the use and maintenance expenses during the all life time of the equipment.
For the 7 chosen HQE targets the minimum requirements level to reach are:
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Harmonious relationship between the building and its immediate environment
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To deal the building integration with its immediate surroundings by an impact study including land organisation, intermediate and outside spaces organisation study.
To take into account the existing plant.
To take into account the existing buildings surrounding
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Energy management
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Heating
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Mitigation of energetic needs thanks to a bioclimactic approach (south global orientation, main winds protection, living rooms on south, “technical” rooms and spaces on north, picture windows, greenhouses). This approach needs in particular the use of large southern-glassed surfaces, but also a fitted internal inertia.
The thermal insulation has to overflow the legislation in force. For that the Ubat shall be 10% lower than the Ubat-ref. The building shall reached and obtain the High Energetic Performance 4 stars quality label (HPE 4****).
Renewable energies shall be installed in order to reduce the non-renewable energy consumption: 15% of the whole energy needs of the building consumption have to be produced by solar means. In this way, 60 m2 solar panels and 20 m2 PV panels were installed.
Heating and domestic hot water will be provided by natural gas collective central heating, with an high energetic efficiency boiler (condensation boiler) and a high environmental efficiency (low outputs of NOX ).
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Controlled exhaust Ventilation (VMC)
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To design a low head loss ventilation net with self-controlled balanced branches and with a low leak rate (good air tightness).
The specific electric power for the ventilation motors shall respect the 20th article of the 29/11/2000 decree (Thermal legislation 2000), and will not be over 0.18 W/m3/h.
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Electricity – private areas
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Design allowing energy efficient refrigerator (66 cm available in kitchen)
In every living room nearby the TV socket, and in every bedroom, special switches turning off all the electric supply to the sockets in order to cut off the audio-visual equipment stand-by losses.
Double cold and hot water supply for washing machines.
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Electricity – common areas
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Minimisation of electric consumption of the common services:
Variable speed drive motors (pumps, ventilation),
Good design of common lightning (separate floor supply, precise time-switch),
Balanced lift with presence cabin lightning,
Outside lightning with fluorescent lamps and crepuscular sensor,
Particular attention is given to the collective boiler plant energy consumption: low head losses hydraulic net, variable speed drive motor pumps, without overpower, …
Optimisation of the electricity standing charges,
Self photovoltaic electricity production connected to the national net.
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Energetic need in general
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Priority is given to low energy-content material.
The total annual energy cost shall not be over 10.80 €/m². This includes the whole energy consumption of the dwellings (heating, standing charges, household appliances, lightning, cooking) and all the expenses for the common services.
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Water management
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Water boost controller if the water pressure is over 2.5 bars.
Water saving household appliances: double flow flush 3/6 litre, mixer tap (thermostatic ones in bathroom), flow reducer, …
Roof raining water recuperation for open spaces watering.
Land raining water management in order to minimise streaming and maximise water seepage.
For open spaces, priority is given to strong and abstemious plants.
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Waste management
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To take into account the local selective households’ refuses: that means kitchen and household refuse premises adapted design, with suited dimensions for the household refuse collection containers,
Household refuse premises with a simple access for the tenants and for the household refuse collection services, and organised with a direct outside access.
Household refuse premises planned out off the walking path.
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Visual comfort
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To promote natural lightning for the dwellings while considering the thermal constraints.
To promote natural lightning in common areas, staircases, …
To make as pleasant as possible the visual relation from inside to outside with most clever perspectives.
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Low nuisance construction sites
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Trees preservation while on work.
To control the working wastes (selective refuse process) and minimise the construction nuisances: noise, dust and mud generated by work engines.
To reduce energy constructing consumption.
To reduce air and water pollution of the building site.
No open waste burning fire.
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Repair and maintenance management
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To optimise maintenance needs.
To plan an easy technical equipment maintenance with a training phase toward end users and maintenance staff.
To plan combined equipment in order to optimise the global building technical efficiency, in order to minimise the global cost.
To plan the monitoring system equipment, and suggest a monitoring plan.
To plan a Solar Guaranty Result (SGR) for the solar domestic hot water.
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The project deals with another additional aim: to build dwellings allowing inside layout modifications in order to fit to the tenants needs in the future. In particular the young rugby players accommodation centre, with studios flats, was designed in order to allow this inside layout toward usual dwellings in the future.
Project State of Advancement
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Preliminary design
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Urban design
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Building design
[x]
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Final design
[x]
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Building permission
[x]
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Construction
[x]
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Commissioning
[x]
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Monitoring
[x]
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Construction:
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Starting date
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Completion date
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September 2002
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December 2003
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