Headquarters of the CAUE (Architecture and Urban Planning Council) in Gironde

7525
Last modified by the author on 11/05/2020 - 11:49
  • Building Type : Office building < 28m
  • Construction Year : 2018
  • Delivery year : 2018
  • Address 1 - street : 293 rue d'Ornano 33000 BORDEAUX, France
  • Climate zone : [Cfb] Marine Mild Winter, warm summer, no dry season.

  • Net Floor Area : 960 m2
  • Construction/refurbishment cost : 1 781 000 €
  • Number of Work station : 33 Work station
  • Cost/m2 : 1855.21 €/m2

Certifications :

  • Primary energy need
    69 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

Located in the center of Bordeaux, the building CAUE Gironde is the result of the renovation of an old shed which he has kept the template. The project is organized around a bioclimatic greenhouse acting as a buffer between the outside and the inside . By playing on occultation, ventilation, air mixing, this "intermediate" space benefits from a favorable temperature difference for each season . The structure of the new part of the building, alternating the principles of wood-frame walls and stud-beams uses local wood . This constructive principle has made it possible, thanks to the pre-fabrication precision of the sub-assemblies, to obtain an excellent level of airtightness which, in addition to good distributed insulation, gives the building a very little loss- absorbing envelope.

Sustainable development approach of the project owner

As an association, the CAUE Gironde aims to promote architectural quality, urban and landscape. Through this project, we wanted to prove that a sober, energy efficient and modern renovation was possible in the historic city center. It was also to build a "showcase", a playful building allowing the CAUE to put forward certain principles and make them understandable. The aim of the project was to build a building whose energy consumption would not exceed 40 kwhef / m2 / year for all uses combined. This is the first project led by the CAUE Gironde which is so ambitious

Architectural description

Located in the center of Bordeaux, the building CAUE Gironde is the result of the renovation of an old shed which he has kept the template. The project is organized around a bioclimatic greenhouse acting as a buffer between the outside and the inside. By playing on occultation, ventilation, air mixing, this "intermediate" space benefits from a favorable temperature difference for each season. The structure of the new part of the building, alternating the principles of wood-frame walls and stud-beams uses local wood. This constructive principle has made it possible, thanks to the pre-fabrication precision of the sub-assemblies, to obtain an excellent level of airtightness which, in addition to good distributed insulation, gives the building a very little loss-absorbing envelope. Most of the office spaces are through and facilitate daytime over-ventilation of the building in summer.

Building users opinion

The building is very pleasant to use. The natural lighting of the workspaces is good, the overall thermal comfort felt is good. Some spaces, however, remain difficult to heat because of a high ceiling and communication with vertical traffic.

If you had to do it again?

The heating system managed by blowing cassettes could be replaced by a low temperature floor heating system coupled with a heat pump. The principle of heating by air is indeed sometimes difficult to manage not to generate discomfort.

See more details about this project

 http://www.cauegironde.com/caue-nouveau-siege-en-image/

Photo credit

Ivan Mathie

Contractor

Construction Manager

Stakeholders

    Assistance to the Contracting Authority

    Less is More

    Yaël Larroze tel: 0688376439 mail: [email protected]

    AMO environment from the design to the operation of the building.




Contracting method

Separate batches

Type of market

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Energy consumption

  • 69,00 kWhep/m2.an
  • 80,00 kWhep/m2.an
  • RT 2012

    heating: 14,283 kWwhef / m2.an air conditioning: 2,161 kWwhef / m2.an ECS: 4.13 kWwhef / m2.an lighting: 2,457 kWwhef / m2.an auxiliaries: 6,185 kWwhef / m2.an process: 6,809 kWwhef / m2.an

  • 210,00 kWhep/m2.an

Real final energy consumption

    32,31 kWhef/m2.an

    38,00 kWhef/m2.an

    38,00 kWhef/m2.an

    2 018

Envelope performance

    The inertia of the building is provided by the implementation of collaborative floors.

    I4

  • 1,00

Systems

    • Heat pump
    • Tape
    • VAV System
    • Individual electric boiler
    • Reversible heat pump
    • Tape
    • VAV Syst. (Variable Air Volume system)
    • Free-cooling
    • Single flow
    • No renewable energy systems

    Serre bioclimatique centrale

Urban environment

  • 618,00 m2
  • 523,00 %
  • The headquarters of the CAUE de la Gironde is part of a dense urban environment in the city center of Bordeaux. Ornano Street, approximately 12m wide, is home to the tram. The sidewalk adjoining the building is 2.2m wide.

Product

    Glued laminated wood

    SACBA

     http://www.sacba.fr/actualites/lamell%C3%A9-coll%C3%A9

    Table 'c21_italy.innov_category' doesn't exist SELECT one.innov_category AS current,two.innov_category AS parentFROM innov_category AS oneINNER JOIN innov_category AS two ON one.parent_id = two.idWHERE one.state=1AND one.id = '7'

    Current structural product employing maritime pine


    CLT stair panels

    Egoin

     https://fr.egoin.com/nos-produits/clt-clt-mix/

    Table 'c21_italy.innov_category' doesn't exist SELECT one.innov_category AS current,two.innov_category AS parentFROM innov_category AS oneINNER JOIN innov_category AS two ON one.parent_id = two.idWHERE one.state=1AND one.id = '7'

    CLT and pin maritime

    Prefabrication in workshop, fast implementation


    Sun Tunnel light pipes

    VELUX

    Table 'c21_italy.innov_category' doesn't exist SELECT one.innov_category AS current,two.innov_category AS parentFROM innov_category AS oneINNER JOIN innov_category AS two ON one.parent_id = two.idWHERE one.state=1AND one.id = '17'

    Allows to reflect the natural light of the roof to the circulations

    good integration


    framing wood

    Scierie Labadie

     http://www.scierie-labadie.com/

    Table 'c21_italy.innov_category' doesn't exist SELECT one.innov_category AS current,two.innov_category AS parentFROM innov_category AS oneINNER JOIN innov_category AS two ON one.parent_id = two.idWHERE one.state=1AND one.id = '6'

    maritime pine of the Landes

    RAS

Construction and exploitation costs

  • 324 375
  • 2 494 971

Energy bill

  • 4 716,00

Water management

  • 87,00 m3
  • 71,00 m3
  • Meters per station were implemented to analyze our consumption and the amount of water saved by recovery of EP

Indoor Air quality

    Air handling system dedicated to the meeting room controlled by the CO2 concentration

Comfort

    • sound insulation against external noise greater than 34dB
    • sound insulation against noise between offices above 40dB

GHG emissions

  • 3,70 KgCO2/m2/an
  • ADEME

Reasons for participating in the competition(s)

After a first year of operation, we find low energy consumption levels coupled with real thermal comfort.
The favorable temperature difference brought by the bioclimatic greenhouse limits thermal losses in winter and preserves a cooler atmosphere than outside in summer.

Building candidate in the category

Energie & Climats Tempérés

Energie & Climats Tempérés

Prix du public

Prix du public

Prix des Etudiants

Prix des Etudiants

Green Solutions Awards 2019 - Bâtiments France
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Elodie Vouillon


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Green Solutions Awards 2019 - Bâtiments France