tetrarc architectes: boreal
tetrarc architectes: boreal tetrarc architectes: boreal
apr 03, 2012
tetrarc architectes: boreal

‘boreal’ by tétrarc architectes, nantes, france
image © s. chalmeau
all images courtesy of
tétrarc architectes

‘boreal’ is a social housing complex with a double-sided exterior in nantes, france by french studio tétrarc architectes.
positioned upon an estate from the 1930s, eleven gabled house-like structures are placed side by side creating a continuous volume.
delicately divided in half with an axis at a 21 degree angle, the overall interior is separated into two entities, one with 6 rental units
and the other with 5 residences. the dwellings are defined by a gridded glass facade which mimics a greenhouse offering unobstructed
views to the personal garden plot adjacent to the building. shifted forwards and backwards, their stepped placement creates
a varied rhythm within the elevation. garden plots provide a place for personal plant cultivation as well as a location to foster
relationships between neighbors.

the opposite side of the premises offers a different appearance with a facade which resembles a vernacular barn. elevated upon posts,
a structure formed with an elaborate wooden framework offers a mid-air connection between the duplex apartments.

personal garden plots are adjacent to the homes
image © s. chalmeau

elevation comprised of eleven structures
image © s. chalmeau

personal gardens
image © s. chalmeau

top floor
image © s. chalmeau

corner view from different storey’s
image © s. chalmeau

interior of residence
image © s. chalmeau

rental units
image © s. chalmeau

wooden structure contains an open-air connecting corridor
image © s. chalmeau

(left) freestanding unit mimics a vernacular wooden barn
(right) path connects each unti to the corridor
image © s. chalmeau

inside the corridor
image © s. chalmeau

image © s. chalmeau

at night
image © s. chalmeau

site plan

floor plan / level 0

floor plan / level 1

floor plan / level 2

floor plan / level 3

floor plan / level 4

roof plan




aerial of residences and gardens

project info:

competition: july 2007
study: september 2008
completion: 2011
gross internal floor area: building surface 3525 m2 shon, ramp surface 380 m2 shon, greenhouse surface 590 m2 shon,
housing surface t2 (50m2), t3 (60m2), t4 (85 à 89m2)
architect: tetrarc architects
project manager: michel bertreux
project director: daniel caud
client: habitat 44
structural engineer: bet structure – iba, bet fluides – hays ingenierie
quantity surveyor: 21 (rental houses) social housing (3 t2, 9 t3, 9 t4), 18 ( social houses) social housing ( 3 t2, 8 t3, 7 t4)
excavation, outdoor planning: blanloeil
shell: legendre
wood framework: caillaud bois
cladding: galifret
thermal insulation: anvolit
ramp, woodwork: mco
dry walls: martin
covering: rossi
paintwork: debuschere
parking insulation: proseco
cleanup: nickel krom
lift: arvor
heating, ventilation: oce
electricity: aes
wire facade: arval
coats: sto
outside joinery: technal
joinery, double skin frame: eternit
lights: airfoil
PVC flooring: forbo novibat
rubber flooring: mondo sportflex
landing doors: maleba
greenhouse, roof/ polycarbonate: dantalon
sanitary facilities: jacob delafon
electrical distribution: alombard

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tetrarc architectes (8 articles)