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123 Social Green Housing by SOMOS Arquitectos

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normal 123 Social Green Housing by SOMOS Arquitectos

Madrid practice SOMOS Arquitectos have completed a social housing project in Madrid, Spain.

Called 123 Social Green Housing, the eight-storey building incorporates 123 apartments.

The building’s exterior is clad in plastic panels on aluminium frames, in three shades of green.

Windows are shaded by 369 shutters in six types, also made of polycarbonate and aluminium.

Two entrances lead to one hall with mail boxes arranged on terraces.

An internal courtyard with steel galleries and staircases provides access to apartments.

Dark grey metal surounds the ground floor with apartments elevated
two metres above street level, while white penthouses crown the top of
the building.
The project is part of the same development as Celosia Residence by MVRDV and Blanca Lleó (see our previous story).
Here’s some more information from SOMOS Arquitectos:

This social housing project in Madrid has an original facade design
with polycarbonate panels in three hues of green. In fact, it is one of
the first residential projects which features plastic materials as a
skin. The programme, including 123 social housing apartments, is called
to be one of the new urban icons on the outskirts of Madrid.
The project rises eight floors above the ground along one of the
limits of the block imposed by the restrained urban planning. The great
scale of the building forces it to act as a visual screen for the green
area that stands aside, physically protecting it. The volume,
specifically fixed according to the rigid city-planning rules that
prevail within the scope of the PAU de Vallecas and the optimization of
the space to obtain the highest amount of apartments asked by the
developer, drove us to respect the enveloped volume determined in the
planning, using other tools to give a new urban approach to the
intervention. Thus, the facade remains as one of the most powerful
instruments to manipulate the perceptive scale.
As we will specify later, colours, sizes and displacements for the
openings are regarded with attention. The ground floor is a delicate
area, as it must deal with the street, separating car and pedestrian
entrances. The apartments in this floor are oriented towards the so
called green area and they have been raised two metres from street
level in order to provide them with some extra isolation from the view
of the possible passer-by. The official facade opens towards the hustle
and bustle common of a commercial street with a four lane road running
along. It gathers the commercial premises and the three accesses
(parking in and out and pedestrian).
Even though the number of apartments demanded two separate accesses,
we decided to create a single welcome space which would be big enough
to interact with the scale of the building. This hall area is
completely open on both sides and its rectangular shape establishes a
dialogue with the free-form platforms of the mailbox area. Thus, the
entrance is modulated by means of generous terrasses finished with
vitreous mosaic, prepared for the installation of the mailboxes, which
grow in height emphasizing the landing as a highly compressed space,
where you’re almost able to touch the plastic semispheres.
These transitions of scale are unified through a green ceiling
completely illuminated with the so called network of protruding
The building poses reflections dealing with the scale reduction,
bringing a friendly relation with the surroundings. The facade is split
into small coloured units that are combined with each other and are
able to transmit a changing sensation, a dynamic chameleon-like skin.
The volume crystallizes through open celled polycarbonate panels fixed
over aluminum profiles, creating a sustainable and recyclable skin,
whose properties will be identified later in detail. These panels use
the gradation of tones and brightness with a substrate of neutral color
determined by the outer shell of the facade, achieving the right
combination of both materials in order to make the entire facade to
vibrate, entering in resonance with that light so characteristic on the
city of Madrid.
Instead of the common window roll-up blind, we have designed
specific shutters for the project. Three-hundred and sixty-nine
openings fixed through six different types. They open outwards and fold
until they rest perpendicular to the facade. They have been made in
aluminium and finished with the same open celled polycarbonate panels
used in the facade.
They are designed as an integral solution, pre-assembled in a
factory, already arriving to the working site as a completely finished
unit which comprises all necessary elements (framing, hinges, doors..)
to settle it up within the facade, thus simplifying the layout on site.
They have two possible positions which change the perception of the
volume. Completely closed they seem to merge within a monolithic volume
giving continuity to the vertical strips. Completely opened they are
transformed into unequal colored fins giving the façade much more
The ground floor is enveloped by a dark grey metal skin which gives
weight to the changing green volume. The building is topped by the
penthouses finished in white which seem to blur with the clear skies.
In the inside, a long courtyard flanked with access galleries provides
the apartments with light and crossed ventilation, helping them to
become completely open to two opposed facades. The light galleries made
out of steel wind through the inner void and optimize the ratio of
vertical access cores on each floor. As added values, they grant
hygiene and salubrity to the common space of relation.
Translucent, polycarbonate hung ceilings are settled like linen
cloths that illuminate the accesses to the apartments. They also
conceal the electrical wiring and provide diffused light. The slim
stairs are solved extending out from these galleries in an overhang
which jumps in the air connecting each floor. In order to capture as
much light as possible, everything is finished is white with several
touches of colour on the windows and on the elevator fronts. Floors in
galvanized steel is suitable for outdoor use and helps to reflect light
into the courtyard. We have considered a mixed structural solution. The
main body of the building is solved in reinforced concrete, whereas the
circulation system of galleries and the stairs in the courtyard are
solved in steel.
The outer skin of the building poses an innovating solution through
the extensive use of a material with high energy-saving benefits: the
OPEN-CELLED POLYCARBONATE, which until now hadn’t been applied in
social housing, where the cost factor of €/m2 is absolutely decisive
and limited.
We are employing 40 millimeters thick open celled extruded
polycarbonate panels with seven internal walls and six air chambers,
protected against U.V. rays. Its modulation is 500mm wide and variable
length, only limited by the transportation conditions, arriving in this
particular case at 11 meters.
This celled structure helps to give the panel much more resistance
to flexion. Each item is fixed side by side by means of a male-female
joint, a device which allows the panels to be installed without a
second vertical order of aluminium profiles, avoiding therefore the
heat dispersion from the inner camera due to the thermal bridges
created by the structure.
Panel color finish is chosen using the RAL color system which helps
to give accurate match between panels, using three different tinted
tones of green which have been specially produced for this design. The
polycarbonate panel’s choice emerges as an important technical
improvement which as a whole offers important advantages:
ENERGETIC EFFICIENCY: it is an extruded material, its outer face is
protected from U.V. rays. Its six internal channels divided by walls
form air chambers within the panel, creating another extra thermal
chamber, thus increasing the insulating power of the original brick
facade in a very high percentage. The male-female joint assembly allows
the suppression of the vertical profiles. Due to the height of the
panels, this joint is secured at specific points by aluminium clips,
diminishing therefore the heat dispersion produced by thermal bridges
of the skin. Also, this material contributes improving other skin
qualities, for example, enhancing its sound insulation, again
increasing the original values.
ECOLOGICAL: as ecological qualities we should point out his recyclebility, the low amount of energy used on manufacturing and
transportation, its high degree of purity and mixing with different raw
materials, and its high degree of industralization in production and
assembly. The material offers a 10 year guarantee.
lightness, between 10 and 12 times less from the weight of glass with
equal thickness, allows to optimize manpower in its assembly and run
times. Its high level of prefabrication reduces costs for preparation
of material.
IMPACT RESISTANCE: thanks to its structure combining six cells, it
owns great impact resistance and an optimal behavior to flexion.
FACTORY FINISHING: the panels come out perfectly sealed from the
factory with an opaque aluminum tape on its upper end and another
micro-perforated aluminum tape on its lower end in order to allow
correct ventilation, avoiding inner staining and being protected from
possible fungus.

Posted by Rose Etherington from dezeen.com

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