Bourdelle

by Florian Bosc Malavergne
/
2022-05-17 00:00:00
/
France
/
1109 / FR

Extension + refurbishment

Building Type : Office building < 28m
Construction Year : 1947
Delivery year : 2021
Address 1 - street : 7 rue Antoine Bourdelle 75015 PARIS, France
Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.

Net Floor Area : 4 631 m² SHON
Construction/refurbishment cost : 6 547 000 €
Cost/m2 : 1413.73 €/m²

Proposed by :

Primary energy need :
99.85 kWhep/m².an
(Calculation method : RT 2012 )

Energy consumption

Economical buildingBuilding

< 50A

51 à 90B

91 à 150C

151 à 230D

231 à 330E

331 à 450F

> 450G

Energy-intensive building

Close to Montparnasse train station, this building was built by the ancestor of the EDF company, the "Compagnie de Distribution d'Electricité Parisienne" (CPDE). It has always been dedicated to the management of Parisian public lighting.
Designed in 1938 by the architect Urbain Cassan, it was originally supposed to be twice as large. Only half of the program was built! Combined with the pre-brutalist architecture of the exposed concrete structure, its accidental asymmetry gives its facades an elegance that is as austere as it is atypical.

The renovation of this office and logistics building in a circular economy includes the creation of an agricultural greenhouse on the roof. The construction cycle allowed the reuse of deposits from the renovation site in the extension project. Thus the exterior joinery making up the existing running strips was reused to form the new openings of the agricultural greenhouse.

More broadly, the renovation project involves an impact reduction approach by promoting reuse, the use of recycled, sustainable materials, and refined and transformable furnishing solutions.

If you had to do it again?

In the private market, the logic could lead to involving the company upstream to carry out more "test" removals and validate a reuse process. The same goes for the technical controller, whose conventional involvement can sometimes lead to impasses during construction. Preliminary tests should be reinforced in the same way.

See more details about this project

https://www.siarchitectes.com/portfolio/eco-bureaux

Photo credit

Credits: Si Architectes - Damien Boboc & Florian Bosc Malavergne
Except video of the assembly of the greenhouse, credit: Serres Anciennes - Guillaume Durost

Contractor

Name : EVESA

Contact : Frederic GALLOO

Construction Manager

Name : Si Architectes

Contact : Florian BOSC MALAVERGNE

https://www.siarchitectes.com

Stakeholders

Function : Designer

Florian BOSC MALAVERGNE

https://www.siarchitectes.com

Function : Designer

Damien BOBOC

https://www.siarchitectes.com

Function : Thermal consultancy agency

SOLENER

Arnaud FAVAREL

https://www.solener.fr

Function : Structures calculist

Atelier MASSE

Raphaël FABBRI

https://www.atelier-masse.fr

Function : Other consultancy agency

OXYNERGY

Pascal BACH

https://www.oxynergy.fr

Function : Company

BOUYGUES ENERGIES SERVICES

Alain CASULE

Function : Company

SITCF

Anthony DECAMPOS

Function : Company

ENERGIES SB

Philippe HOCHART

Function : Company

SERRES ANCIENNES

Guillaume DUROST

https://www.serre-ancienne.fr/

Function : Company

Bouygues Energies Services

Kevin Dy

Type of market

Design and implementation

Energy consumption

Primary energy need : 99,85 kWhep/m².an
Primary energy need for standard building : 50,00 kWhep/m².an

Calculation method : RT 2012

CEEB : -0

Initial consumption : 250,70 kWhep/m².an

Systems

Heating system :

Gas boiler

Hot water system :

Individual electric boiler

Cooling system :

No cooling system

Ventilation system :

Double flow heat exchanger

Renewable systems :

Solar photovoltaic

Renewable energy production : 3,08 %

The technical terrace located in R+7 has been equipped with a fleet of 45 photovoltaic panels with a total power of 19.84 kWp. The production is distributed in the building and consumed instantaneously.

Smart Building

BMS :

The BMS installed in the building contains the following information:
- Monitoring of electricity consumption by floor ;
- Monitoring of water consumption by floor ;
- Weather monitoring ;
- Monitoring of boiler production ;
- CTA operating status.

Urban environment

In the dense urban environment of the Montparnasse district in Paris, the renovation of the building has restored all its brilliance to the facade, decayed by time, which dialogues again with the other buildings of the 1930s. The agricultural greenhouse installed on the roof is integrated into the shades of gray of traditional zinc roofing with its galvanized steel structure.

Construction and exploitation costs

Total cost of the building : 6 547 000 €

Reuse : same function or different function

Batches concerned by reuse :

Outdoor joineries
Floorings
Suspended ceilings
Electricity
Plumbing

For each batch : Reused Materials / Products / Equipments :

Exterior metal joinery:

Openable carpentry making up the running strips of the R+2 level - 43m² - 40 units - in-situ

False ceilings :

Slabs reused in-situ - 980m²
Reuse slabs - 1000m² - from another company removal site

Floors:

Parquet floors - 150m² - in-situ
Carpet - 30m² - company unused stock

Exterior floors:

Protective gravel for technical flat roofs - 7m3 - in-situ

Plumbing:

PVC tube (EU) - 35ml - company unused stock

Electricity :

Downlight luminaires - 71 units - in-situ
LED tiles - 247 units - in-situ
Exterior wall lights - 7 units - in-situ
Fluorescent tubes - 126 units - POLIX lamps - Maximum Design

Environmental assessment

Impacts avoided : water, waste, CO2 :

Waste : 194 tons of which 94.7 tons were recovered or reused (Tricycle Environnement).

Asbestos : 30m3 of asbestos waste recycled by inerting (vitrification by Intertam). This is the only way to avoid landfill and to guarantee the safety of the residue. The vitrificate obtained (Cofalit) is used as a road surfacing underlay, but many other uses are being studied.

Social economy

Social economy and professional integration :

TRICYCLE ENVIRONMENT: 11 employees in professional integration
METISSE LE RELAIS: all company profits are reinvested in the creation of sustainable jobs.

Reasons for participating in the competition(s)

The circular economy renovation approach, jointly supported by the Project Owner and the Project Management on the project, experimentally prefigures the future of rehabilitation. It is part of an optimization of resources specific to the site and the building in terms of functionality, equipment and architecture. It organizes the project according to opportunities related to existing spaces, to demolitions. It favors the use of biosourced, recycled or reused materials. It optimizes the processing and recycling of construction site waste.