PIVO project and service center - La Saulaie
- Building Type : Other building
- Construction Year : 2022
- Delivery year : 2023
- Address 1 - street : 1 avenue Edmond Locard 69600 OULLINS, France
- Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.
- Net Floor Area : 227 m2
- Construction/refurbishment cost : 761 000 €
- Cost/m2 : 3352.42 €/m2
Primary energy need
(Calculation method : RT 2012 )
The House of the Saulaie project is the first building to come out of the ground in 2023, on one of the last industrial wastelands in the south of Lyon. The building also hosts the PIVO (Pôle d'Initiative de la Ville d'Oullins), which hosts the city's public policy department and offers actions in various fields (culture, associations, employment, youth). The building thus had to respond to a triple challenge: the multiplicity of functions, the attractiveness on the scale of the district and the reversibility of the site in the long term.
The whole design was developed around a project that can be dismantled (off-site 2D wood), comfortable (passive building focusing on dry networks), identifiable (facade with louvres and reused shutters) and inclusive (organization of a construction site youth). The circularity of the design generated good communication between the actors of the project (architect, contracting authority, BE, BC, suppliers) and made possible the delivery of a flagship building for La Saulaie. The dismantling of the project will make it possible to justify over the very long term its low impact on its environment: it will once again give way to weeds in a few years.
If you had to do it again?
The pace of the project was really very fast with the basic start of the study in October / a PC for the end of December (completed) / delivery for the following summer (impossible).
This time + cost element did not make it possible to develop dismantling in an optimum way, because it requires labor at the level of the box/insulation-outer cladding interface. The company that had the EXEs came up with a solution that was more time-consuming than could be imagined.
It would require a longer study time with, at the programming level, a better financial estimate. This would make it easier to interest companies, to carry out the project more calmly and more precisely with regard to the technical, environmental and social ambitions set. And we would have liked to have the EXE studies.
Another point for improvement: for cladding for reuse, the company did not have an internal storage area to simplify the process (measuring and labeling / preparation).
See more details about this projecthttps://www.ville-amenagement-durable.org/SERL-chantiers-de-reemploi-logistique-urbaine-et-renaturation
VLADIMIR DE MORELLAT DU JEU ET MEIOSIS
Matthieu Cambuzat - matthieu[a]studio-shibumi.frhttps://studio-shibumi.fr/
Thermal consultancy agency
Romain Fevre - romain.fevre[a]epco-energies.fr - 04 78 47 25 44https://epco-energies.fr/
design and site monitoring of fluids/thermal/qeb cp dismantling
Simon PIERRON DPI - s.pierron[a]dpistructure.com> - 04 78 53 00 84https://www.dpistructure.com/
design and construction site wooden structure / 2D modules cp dismantling
Anaïs Lecerf - anais.lecerf[a]bobi-reemploi.frhttps://www.bobi-reemploi.fr/
supply and inventory of reused materials
Other consultancy agency
NARDY Stephane - stephane.nardy[a]denizou.fr - 04 78 84 44 71https://www.denizou.fr/
construction economist / establishment of markets with specificities related to reuse
Patrice VAGANAY - contact.vaganay[a]gmail.com - 04 78 46 04 99https://vaganaysas.fr/
Holder of the Clos-Couvert macro lot / wood frame work (interior-exterior) and reuse cladding
Fabien ROGGIA - fabien.roggia[a]jf2e.fr - 04 69 00 16 09https://www.jf2e.fr/
Holder of the electricity / work package taking into account dismantling
Process support related to reuse / validation of products resulting from reuse
MADE IN PAST
Maxime CORNUT - contactmadeinpast[a]gmail.comhttps://www.madeinpast.fr/
stripping and transport-storage of reuse blinds and shutters
Type of market
Other type of market
PUBLIC CONTRACT LAW MOP / BASIC MISSION WITHOUT EXE
Allocation of works contracts
- 87,00 kWhep/m2.an
- Heating: 54
- DHW: 4.4
- Lighting: 22
- Auxiliaries: 10
Real final energy consumption
- 0,30 W.m-2.K-1
- The calculations are carried out without PV.
- We will follow the usage. A user guide is in progress.
- Electric radiator
- Other hot water system
- No cooling system
- Double flow heat exchanger
- Solar photovoltaic
- 15,00 %
- Urban heat island
- Biosourced overinsulation with thermal phase shift;
- Natural ventilation hatch;
- Adjustable sun breakers;
- Light tints for albedo limitation;
- Rainwater recovery;
- Raising the building by 30 cm;
- User manual for getting started with resilient functions.
- 667,00 m2
- 38,00 %
Construction and exploitation costs
- 12 675,00 €
- 109 740 €
- 789 879 €
Circular economy strategy
- Maximization of quantities on targeted products
- Targeting of areas
- Maximization of the carbon gain
- Maximization of the mass of waste avoided
Reuse : same function or different function
- Structural framework
- Outdoor joineries
- Suspended ceilings
- Raised floors
- Heating ventilation air conditioning
- Wooden shutters: Supply, stripping and storage: 173.5 m²
- Solid wooden shutters: Supply, stripping and storage: 40.9 m²
- That is 269 units
- 61 units - collective housing - Lyon (69)
- 107 units - individual housing - Saint-Etienne and outskirts (42)
- 36 units - individual housing - Saint-Etienne and outskirts (42)
- 18 units - individual housing - Morestel (38)
- 37 units - Chambéry Museum - Chambéry (73)
- 100% of the structure which is made of 2D modules for future reuse, including floor and roof, with insulation and interior linings including acoustics, 100% joinery and solar protection, 100% electricity, 100% HVAC, 100% floor
- The architectural concept, with the architect's desire to propose a symbolic and visible element for this Project House which also brings together the Inclusive Policy Department of the City of Oullins (PIVO), and which had to make the link between the historical working-class district, and the reinforced city => choice of an element of ordinary architecture Shutter and Persienne which would be laid out on all the facades.
- The choice to leave the sourcing free with regard to the dimensions of the elements, the architect agreeing to adapt the final layout according to the dimensions found.
- The unknown as to the quantities possibly sourced, in a short time since young construction sites were planned for July 2022 and sourcing began in March => a fixed base in the markets + in BPU, as well as a very strong coordination master of work architect Bobi control office to monitor financial elements and commitment to advancement.
- The management of the temporality of the project (both for the dismantling aspect and the reuse of facades). The study and construction deadline objectives were very, very tight.
- Difficulties related to temporality.
- Difficulties linked to the concerns of identifying the shutters: the latter had a code specific to them, but the reconditioning stages (change of storage locations, stripping involving an alternation between wet and dry phases) caused the dimensions of the deposits to vary the order of 1 to 2 cm over a width of 50 cm. They also involved losing the identifications between 2 steps. These variations were inevitable but complicated the identification of the shutters in order to replace them in the layout of the facade: they were measured at least 3 times each over the entire process. Despite good organization of the deposits on the site, the final installation of the shutters took turns of a puzzle for the carpenter (who had fun with it!).
- No storage on site, but financial contribution for storage by the material supplier on his site
- 19 Paris-Nice journeys
- 4058 rectangular bathtubs filled with water
- 4 years of household waste from a Frenchman
- Waste avoided: 3.75 tonnes
- Global warming impact: 9052.2 kg.eq.CO2
- Use of fresh water avoided: 164 m3
- Biogenic carbon content of the product (stockC): 1200 kgC
|CO2 avoided (kg)||Water consumption avoided (m3)||Waste avoided (kg)|
The reuse operation saved the equivalent of 16,986 kilometers traveled by a small car, i.e.
Results of the impact calculation carried out by Bobi Réemploi
BUILDING NOT YET CALCULATED / in progress
Beyond the common impacts avoided linked to wood construction with wood from the Alps, the dismantling/reassembly corresponds to estimating a future "new" construction for which the interior partitions and the adaptation to the ground will be the two main impacts.
If we estimate (in short) from the financial amounts, the dismantling/reassembly cost should be around 25% of the base price of the building, ie 75% less impact.
- 28 420 €
- Purchase by the contracting authority from a reuse platform
- 800 €
- Site visit with members of the Ville et Aménagement durable association on January 26, 2023 (forty registered).
- Site signs explaining the process.
- Bioclimatic work: solar gains, wind, distance from road noise for offices, preservation and enhancement of existing plant spaces (including high-stem trees), recovery of rainwater for educational gardens, bike racks and dedicated personal parking
- Work on summer comfort: with natural ventilation through specific openings + air blower + wood wool for phase shift + BSO
- Work on winter comfort: overinsulation + DF heat recovery
- Acoustic work
- Use of wood from the Alps;
- Water recovery;
- Passive summer comfort.
- The very framework of the disassembly/reassembly approach limits waste.
- At the level of the exterior and interior layouts, the latter are optimized to limit scraps and cuts (particularly OSB). Regarding the shutters, we have installed everything.
Additional information (PDF documents)
Indoor Air quality
- No measurements taken.
- Precautions are taken on the OSB category + ventilation rates above the standard (25m3/h per person) + large volumes.
- Regulation on CO2 sensor for conference area
- Work on summer and winter thermal comfort, with the possibility in terms of ventilation of switching from DF heat recovery in winter to 100% natural ventilation.
- Temperatures cf. Givoni diagram with simulations
- Work with perforated OSB, and work on mechanical ventilation.
- FLJ simulations + work with adjustable BSOs for level management.
- Management also of artificial lighting with level variations.
- L+M work on reception elements both in terms of signage and furniture
Quality of life and services
- User guide in progress.
- In the meantime, an on-site explanation of the elements related to summer comfort has been carried out by EPCO.
- Floor, walls, roof: wooden boxes with 100% wood wool insulation
- Walls, roof: interior finishes 100% wood panels (no placo and aluminum rail)
Initiatives promoting low-carbon mobility
- Bicycle racks for visitors;
- Bike room for staff;
- Positioning to the right of the Oullins multimodal exchange hub.