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DEPARTEMENT ARCHITEKTUR ETH ZÜRICH
BAUTEN/BAUEN – ARCHITEKTURLABOR SCHWEIZ:
INTERVIEW 3
Philippe Rahm: “Form and Function follow
Climate”
PHILIPPE RAHM INTERVIEWED BY
LAURENT STALDER Buildings/building – Swiss
Architecture Laboratory (Bauten/bauen –
Architekturlabor Schweiz) is a two-year lecture and
inter- view series to be held by the Department of
Architecture at ETH Zurich. Swiss architects will be
invited to explore new trajectories in architecture and
urban design in a sequence of lectures. In parallel,
interviews will be con- ducted, with excerpts appearing
regularly in archithese. The interviews will be
published in their entirety in a compilation in book form
at the conclusion of the series.
A central premise of your work is that the para- digm
shift that took place in Human Sciences in the 1990s
has had repercussions also for architecture.
When I graduated in the 1990s, I was initially inter-
ested in the chemical and physical qualities of mater-
ials. I wanted to adopt a position on architecture as
defined by Hegel, namely that architecture, owing to
its materiality, occupies the bottom rung of the artis-
tic ladder, so to speak, subject as it is to weight, the
climate and erosion. However, the implication here
was not simply to think about individual materials in
isolation but rather to understand the connections
that exist between them. My work with my former
firm, Décosterd & Rahm, associés, was thus rooted
from the start in the notion of interconnectedness,
of an eco-system. It rested on the hypothesis that
materials are not isolated from one another but
inter connected by a series of chemical, physical and
biological transformations. For example, the potas-
sium and phosphate found in certain stones nourish
the soil when they decompose as a result of expos-
ure to air or water. Photosynthesis subsequently
allows carbon dioxide and water to metamorphose
as oxygen and glucose. It was on the basis of this
thesis, that we built in 1995 the annexe of a private
88 archithese 2.2010
residence from concrete, the stony aggregates of
which contained the two aforementioned elements.
In eroding over time, the house would replenish
the soil with the minerals that plants need in order to
grow. At the end of the 1990s, following the arrival
of new technologies such as mobile phones and
the internet, there emerged the notion of an elec-
tromagnetic field and hence, the idea that matter is
not only visible but invisible, electromagnetic. From
then on, electromagnetic geography superposed
itself on physical geography. In 1998, also, the first
federal provisions on electromagnetic pollution were
published, to regulate thresholds of non-ionising ra-
diation. Paradoxically, that which came to be called
“information highways” generated smog, just as real
highways do. The field of architecture and urbanism
had thus slid towards the invisible dimension. Sure,
one didn’t know so far (and still doesn’t) whether
or not such dangers are real yet the very notion of
an electromagnetic field opened up a new way of
thinking about space. Space was from this point on
no longer imagined simply as a void, as an absence
defined by walls, floor and ceiling but as a less dense
mass, disconnected, transparent and yet neverthe-
less filled with material; a void invisible to the eye,
certainly, but in which the body was immersed.
The architect’s agenda would thus henceforth
encompass not only the domain of the object but in a
more general sense, that of the envir- onment?
Yes, absolutely. Actually, I have never been interest-
ed much in new technologies per se or as a means
to generate new forms. I’ve always remained quite
critical of this ongoing virtual, agravic, “paperless”
dematerialisation of architecture. Thus in 1999,
when I was invited to take part in an exhibition
on new technologies in architecture, I proposed a
critical project, the hormonal-web, in which I dem-
onstrated the physical and biological aspects of the
virtual. It was a question of demonstrating that, in
spite of digital dematerialisation, a physiological link
spite of digital dematerialisation, a physiological link
continued to exist between the computer and the
continued to exist between the computer and the
user’s body, by virtue of the screen’s radiation on
user’s body, by virtue of the screen’s radiation on
the human eye.
the human eye.
This project subsequently developed under the
This project subsequently developed under the
name i-weather.org, a sort of climatic cycle for the
name i-weather.org, a sort of climatic cycle for the
inter net that develops in time with a 25-hour circa-
inter net that develops in time with a 25-hour circa-
dian rhythm linked to the hormone melatonin.
dian rhythm linked to the hormone melatonin.
Does scientific progress transform architects’ field of
knowledge?
Does scientific progress transform architects’ field of
knowledge?
Does scientific progress transform architects’ field of
knowledge?
Yes. For example, reinforced concrete and steel
Yes. For example, reinforced concrete and steel
have totally transformed our conception of space.
have totally transformed our conception of space.
These new materials allowed a spatial arrangement
These new materials allowed a spatial arrangement
determined by closed, juxtaposed rooms, linked by
a corridor, to be replaced by Le Corbusier’s or Mies
a corridor, to be replaced by Le Corbusier’s or Mies
van der Rohe’s free plan, by fluid space. I believe
van der Rohe’s free plan, by fluid space. I believe
that knowledge of the physical, electromagnetic and
that knowledge of the physical, electromagnetic and
chemical dimensions of space will modify the nature
chemical dimensions of space will modify the nature
of contemporary architecture in the same way.
of contemporary architecture in the same way.
You define this paradigm shift in architecture as the
transition from “physical” architecture to “physiological”
or “atmospheric” architecture.
You define this paradigm shift in architecture as the
transition from “physical” architecture to “physiological”
or “atmospheric” architecture.
You define this paradigm shift in architecture as the
transition from “physical” architecture to “physiological”
or “atmospheric” architecture.
You define this paradigm shift in architecture as the
transition from “physical” architecture to “physiological”
or “atmospheric” architecture.
You define this paradigm shift in architecture as the
transition from “physical” architecture to “physiological”
or “atmospheric” architecture.
You define this paradigm shift in architecture as the
transition from “physical” architecture to “physiological”
or “atmospheric” architecture.
What do you understand by this?
What do you understand by this?
This terminology is part of the language of the
This terminology is part of the language of the
manifesto. The discovery of the atmospheric di-
mension of architecture has allowed us to distance
mension of architecture has allowed us to distance
ourselves from a Swiss debate that – in the 1990s,
ourselves from a Swiss debate that – in the 1990s,
in the wake of Herzog & de Meurons’ first projects –
in the wake of Herzog & de Meurons’ first projects –
focussed only on materials’ narrative or symbolic
focussed only on materials’ narrative or symbolic
properties. Concentrating on the physiological and
properties. Concentrating on the physiological and
consciously excluding from our research all that
consciously excluding from our research all that
might have clouded this dimension, allowed us to
might have clouded this dimension, allowed us to
apprehend space in a novel, unexpected way, since
apprehend space in a novel, unexpected way, since
it was determined by unexplored givens. Thermal
it was determined by unexplored givens. Thermal
imaging and x-rays do actually allow space to be
imaging and x-rays do actually allow space to be
visualized differently. Light, for example, a classic
visualized differently. Light, for example, a classic
element of the language of architecture, has been
element of the language of architecture, has been
enriched since the 1980s by a biological dimension,
enriched since the 1980s by a biological dimension,
for its intensity and the length of its waves have
for its intensity and the length of its waves have
been shown to influence the hormone melatonin. In
consequence, architecture is no longer simply the
expression of the play of light and shade on bodies
and materials but attains a physiological dimension.
Such discoveries opened up a new field of research
with new implications, with unheard-of design ra-
tionales. I called this field “physiological architecture”.
But how can one reconcile this desire for rup- ture with
notions that remain on the whole very traditional: such
as that of “the atmosphere” so entrenched in Swiss
architectural debates of the 1990s?
I see myself as heir to a certain Swiss tradition and
to its interest in questions of ambiance linked to the
materiality of objects. However, my work moved
very rapidly beyond the idea of memory, reference
or analogy in favour of a sensual and immediate per-
ception of the odour, the length of a wave, the level
of humidity. It’s therefore not so much the visual or
semantic dimensions of atmosphere that are central
to my work as the physiological or meteorological di-
mensions, in the primary, literal sense of these terms.
This mistrust of form transpires in another of your
postulates. You don’t trace the paradigm shift of the
1990s back solely to the transition from “the physical”
to “the physiological” but also to the transition from a
concept of architec- ture as a problem of form to that of
architecture as a performance issue. What do you
under- stand by this?
In the classical tradition, in the work of Vitruvius or
Alberti, the emergence of form seems to be linked
with harmony and symmetry and their relation to the
human body. Then, in Modern architecture, form
becomes the expression of function. It is the body
that deforms space, the length of an arm that de-
termines the size of a kitchen. In the 1990s, with the
emergence of the minimalist “Swiss box”, the ques-
tion of form became linked with materials, with their
sculptural qualities and surface. For my part, I was
no longer interested in the building envelope but in
what it contains, no longer in the envelope’s matter
but in that of space: in the void. My first projects
were consequently very “informal”. Then, little by
little, by investigating not only the chemical but also
the physical characteristics of the air – the fact that
warm air rises for example, and the displacement
of humidity – I was able to generate a catalogue of
forms determined by these conditions.
So what you mean by performance in architec- tural
terms is control of the interior climate?
Yes. The primary role of the architect is to modify
or adapt a climate to human needs: to raise the
temperature when it is cold, the measure of light
when it is dark. The very essence of architecture
is therefore to create an environment that differs
from the exterior environment, be this in terms of
1 Philippe Rahm archi- tectes, Digestible Gulf Stream, 12th
International Architecture Exhibition, La Bienale di Venezia,
2008
(photo: Noboru Kawagishi)
temperature, humidity, air or sound. The notion of
temperature, humidity, air or sound. The notion of
climate or atmosphere is thus fundamental to archi-
tecture. I think that ultimately the mass is secondary
tecture. I think that ultimately the mass is secondary
to the void. Paradoxically, the history of architecture
to the void. Paradoxically, the history of architecture
did not assign this status to it.
did not assign this status to it.
Control of the climate is consequently architec- ture’s
principal task?
Control of the climate is consequently architec- ture’s
principal task?
Control of the climate is consequently architec- ture’s
principal task?
Yes. There’s no other choice. But I wouldn’t use
Yes. There’s no other choice. But I wouldn’t use
the term “control”, with its modern, normative con-
the term “control”, with its modern, normative con-
notations. I would rather say, that design of the
atmosphere is now the domain of architecture. And
atmosphere is now the domain of architecture. And
the new ecological norms accentuate that. Today,
the new ecological norms accentuate that. Today,
interior space is insulated to the point where one
interior space is insulated to the point where one
can practically heat a house with the flick of a lighter.
can practically heat a house with the flick of a lighter.
But this gives rise to new problems such as oxygen
But this gives rise to new problems such as oxygen
renewal, evacuation of the humidity that ensues
renewal, evacuation of the humidity that ensues
from respiration, or adjustment of temperatures to
from respiration, or adjustment of temperatures to
22°, 19° or 16°Celsius, depending on what a space
22°, 19° or 16°Celsius, depending on what a space
89 89
is to be used for. One can see that the exigencies
of sustainable development are causing an increas-
ingly dramatic and fundamental shift in architecture,
from the tectonic to the climatic, the visible to the
invisible dimensions.
The well-tempered environment, a concept de- fined in
terms of its mechanical dimension by Reyner Banham
in 1969, was the theme of your installation for the
Venice Biennale in 2008.
Yes, that’s right. But I discovered the work of the
1950s and 1960s relatively late: the projects of
Yves Klein or Andrea Branzi, for example, or the
theoretical writings of Reyner Banham and Michel
Ragon. Actually, between the 1960s and my project
for the Biennale in 2008, Digestible gulf stream,
Postmodernism served to eclipse this evolution.
By setting up a situation of thermal asymmetry –
convection transfer from a warm pole at 24°Celsius
to a cold pole at 16°Celsius – my project sought to
create a varied thermal landscape. Obviously, in-
habitants’ behaviour changes according to the tem-
90 archithese 2.2010
perature of the space they find themselves in. On
the lower plateau, heated to 24°Celsius, it’s possible
to be naked. The climate is paradisical, summery,
voluptuous. The quest for this type of environment is
inscribed in a long tradition that oscillates between
Monte Verita, Shangri-la, the Golden Age, hippy
open-air events and Arcadia. By contrast, the cooler
temperature of 16°Celsius emitted by the higher
plateau creates a more hostile environment.
It would be interesting to write a “thermal” history
of design and its relationship to the interior climate. In
films of the 1960s, the domestic landscapes in which
skimpily-clad girls dance barefoot on pile carpets
suggest an interior climate of around 23 to 24°Cel-
sius. Following the oil crisis in the 1970s, the interior
temperature drops to 18°Celsius. These changing
conditions lead people to turn down their heating.
They’re obliged to wear heavy woollen sweaters,
even indoors. In the same way, the domestic land-
scape of the 1970s becomes stiffer; it forces people
to stand up, to abandon the floor. Insofar my Digest-
ible gulf stream is only fifty per cent a 1960s revival;
the other fifty per cent is a 1970s revival. Architecture
the other fifty per cent is a 1970s revival. Architecture
thus allows for the production of diverse environ-
thus allows for the production of diverse environ-
ments, rich in contrasts. It’s possible to totally recre-
ments, rich in contrasts. It’s possible to totally recre-
ate a Spanish summer, a Tahitian springtime, a Swiss
ate a Spanish summer, a Tahitian springtime, a Swiss
winter, simply by regulating the levels of humidity
winter, simply by regulating the levels of humidity
and luminosity, and the position and intensity of heat
sources. Architecture does not simply create spaces
sources. Architecture does not simply create spaces
that protect one from wind and rain; it also allows for
that protect one from wind and rain; it also allows for
different temporal zones because, in moving from
different temporal zones because, in moving from
one space into another, it is now possible to make
one space into another, it is now possible to make
a spatial-temporal leap from the south to the north,
a spatial-temporal leap from the south to the north,
from daytime to nighttime, similar to that which one
from daytime to nighttime, similar to that which one
experiences in Switzerland in winter, when crossing
experiences in Switzerland in winter, when crossing
the threshold to enter one’s home.
the threshold to enter one’s home.
Which leads to your equation, “form and func- tion
follow climate”?
Which leads to your equation, “form and func- tion
follow climate”?
Which leads to your equation, “form and func- tion
follow climate”?
Which leads to your equation, “form and func- tion
follow climate”?
The formula derives from two or three projects from
The formula derives from two or three projects from
2005, in which I investigated the interrelation of humid-
2005, in which I investigated the interrelation of humid-
ity levels, temperature, air circulation and arch itectural
ity levels, temperature, air circulation and arch itectural
space. It’s based on simple propositions: a human
space. It’s based on simple propositions: a human
being emits thirthy grams of humidity per hour when
being emits thirthy grams of humidity per hour when
3
2
sleeping, simply by breathing, 150 grams per hour
when active, and up to 1500 grams per hour when
taking a shower. Our activities thus contribute to
progressively raising the level of humidity in the air
around us. Consequently, spatial organisation must
be designed in the light of our different activities, in
accordance with various data on the interior climate.
Such data are important when air renewal is control-
led by the double-flux heat exchanger stipulated by
the new environmental norms.
Normally, the architect organises his plan to suit
the proposed functions of a space and introduces a
ventilation system only later. I asked myself if it might
be possible to reverse this proposition, in such a
way that form and function would follow the climate.
In consequence, spaces would no longer be organ-
ised in accordance with functional principles but in
terms of ventilation. The house would literally be
designed on a current of air, going from dry to humid.
That’s the plan for the Mollier house project.
The stratified design of the Archimedes House at
Vassivière corresponds to the air current that runs
through the building. The project proposes that
one imagines the house in its entirety in the light of
the fact that warm air rises, and distributes various
usages of the house according to the temperatures
they require: thus at the very top of the house,
one finds the bathroom, the living room below that,
the kitchen below that, and the bedrooms on the
ground floor. The circulation of air thus generates a
new spatial organisation, a new typology that closely
complies with Swiss SIA norms. In fact, the latter
recommend themselves that temperatures be vari-
able and reflect inhabitants’ activities.
This climatic as opposed to functional approach
to the project updates the environmental principles
that one finds already in vernacular architecture:
2 Philippe Rahm archi- tectes, Domestic Astron- omy, Louisiana
Museum, Denmark, 2009 (Photo: Brøndum & Co)
3 Philippe Rahm archi- tectes, Diurnisme, Centre Pompidou,
Paris,
2007 (Photo: Adam Rzepka)
4 Décosterd & Rahm, associés, Hormonorium, 8th International
Architec- ture Exhibition, la Bienale di Venezia, 2002 (Photo:
Niklaus Stauss)
4
warm spaces have always been south-facing, cold
spaces where milk and other foodstuff were stored
north-facing, dry spaces for hay in the roof space,
and humid ones in the cellar. The defining factor here
was therefore not the purpose of a space but its
temperature. Spaces might equally be multipurpose.
In the inhabited parts of some houses, the room with
a hearth served both as a kitchen and living room
and perhaps also as a place of repose for the elderly.
This independence of form and function is even
more striking in other cases, for example in trad-
itional houses in Baghdad. Rooms there do not have
a fixed function. Rather, their function changes in the
course of the day and the course of the year. Usage
is determined by temperature: the roof may become
the bedroom in summertime, for example. It is no
accident that the names of rooms are linked not to
their function but to different climates.
What is this need you have, to inscribe yourself in an
environmentalist discourse? It permeated your writings
in recent years and you refer to it here – yet to me, it
seems reductive.
It’s a question of contingency. The environmen-
tal concerns that arose shortly before 2005 finally
provided a context for my work on physiological
architecture. Physiological architecture acquires
pertinence in the present framework of sustainable
development and it facilitates a critique of a too
narrow reading of technical or functionalist environ-
mentalism. But sustainable development per se is
of interest to me only insofar as it allows me to find
new forms and new ways of designing architecture.
Every quest for comfort, be it in terms of organ- ising
space or, as in your work, the “biological” or even
“physiological” dimensions of space, is
linked to the issue of control. As you admit in an
interview in the magazine ICON, work on the
“physiological” data of a dwelling enables you
linked to the issue of control. As you admit in an
interview in the magazine ICON, work on the
“physiological” data of a dwelling enables you
linked to the issue of control. As you admit in an
interview in the magazine ICON, work on the
“physiological” data of a dwelling enables you
linked to the issue of control. As you admit in an
interview in the magazine ICON, work on the
“physiological” data of a dwelling enables you
linked to the issue of control. As you admit in an
interview in the magazine ICON, work on the
“physiological” data of a dwelling enables you
linked to the issue of control. As you admit in an
interview in the magazine ICON, work on the
“physiological” data of a dwelling enables you
not only to control but also to manipulate fac- tors such
as sleepiness, mood, wellbeing and so forth. In that
interview you even use the term “perversion” to
describe this potential.
not only to control but also to manipulate fac- tors such
as sleepiness, mood, wellbeing and so forth. In that
interview you even use the term “perversion” to
describe this potential.
not only to control but also to manipulate fac- tors such
as sleepiness, mood, wellbeing and so forth. In that
interview you even use the term “perversion” to
describe this potential.
not only to control but also to manipulate fac- tors such
as sleepiness, mood, wellbeing and so forth. In that
interview you even use the term “perversion” to
describe this potential.
not only to control but also to manipulate fac- tors such
as sleepiness, mood, wellbeing and so forth. In that
interview you even use the term “perversion” to
describe this potential.
not only to control but also to manipulate fac- tors such
as sleepiness, mood, wellbeing and so forth. In that
interview you even use the term “perversion” to
describe this potential.
not only to control but also to manipulate fac- tors such
as sleepiness, mood, wellbeing and so forth. In that
interview you even use the term “perversion” to
describe this potential.
not only to control but also to manipulate fac- tors such
as sleepiness, mood, wellbeing and so forth. In that
interview you even use the term “perversion” to
describe this potential.
I work on the climate, on climatic parameters, and
I work on the climate, on climatic parameters, and
I render them visible, so one might well imagine I’m
I render them visible, so one might well imagine I’m
responsible for them. In reality, all I do is exploit new
responsible for them. In reality, all I do is exploit new
scientific findings. I didn’t invent this link between
scientific findings. I didn’t invent this link between
the hormonal cycle and light. But it happens to exist.
the hormonal cycle and light. But it happens to exist.
However, we’re not obliged to biologically manipu-
However, we’re not obliged to biologically manipu-
late people just because architecture has gained a
late people just because architecture has gained a
biological dimension. No more than we are obliged
biological dimension. No more than we are obliged
to build solid walls simply because we invented
to build solid walls simply because we invented
concrete.
concrete.
In the ICON interview, I was led by the idea that
In the ICON interview, I was led by the idea that
my work ensued from a sort of second perversion.
The first perversion was modernity’s domain since,
The first perversion was modernity’s domain since,
as Heidegger so aptly described, it perverted natural
as Heidegger so aptly described, it perverted natural
cycles, transformed day into night, winter into sum-
cycles, transformed day into night, winter into sum-
mer. This Modernist project is now over.
mer. This Modernist project is now over.
In Diurnisme, my installation for the Centre Pom-
In Diurnisme, my installation for the Centre Pom-
pidou from 2007, I therefore proposed to pervert
pidou from 2007, I therefore proposed to pervert
perversion of modernity. It was a double perversion.
perversion of modernity. It was a double perversion.
Indeed, while modernity created non-stop daytime by
Indeed, while modernity created non-stop daytime by
using city lights to suppress the alternation of day and
using city lights to suppress the alternation of day and
night, thereby transforming the shape of cities and
night, thereby transforming the shape of cities and
the nature of urban lifestyles (as in night-owls, nightlife,
the nature of urban lifestyles (as in night-owls, nightlife,
evenings at the theatre or at balls, etc.), in Diurnisme I
evenings at the theatre or at balls, etc.), in Diurnisme I
tested continuous night or, to be more precise, a false
tested continuous night or, to be more precise, a false
night in false daylight during a real night.
night in false daylight during a real night.
It’s a fact that nocturnal pollution disturbs natural
biorhythms. In the daytime, light blocks the human
biorhythms. In the daytime, light blocks the human
body’s secretion of melatonin, which influences the
body’s secretion of melatonin, which influences the
sleep cycle. By contrast, the body secretes large
sleep cycle. By contrast, the body secretes large
91 91
quantities of melatonin at night. In my project I tried
to reintroduce nighttime without re-extinguishing
the light. It was a matter not of retracing steps but of
going a step further. I therefore worked on the length
of those light waves that don’t affect melatonin: the
length of light waves over 600 nanometres, which
show extreme luminous intensity in the oranges/
yellows, like high noon, at 7000 lux. The body’s bio-
logical rhythm is thereby exposed to something like
the nocturnal situation yet in full daylight. Diurnisme
is the creation of a false night in the false daytime of
modernity. This approach to architecture – which con-
cerns on the one hand the macroscopic scale, that of
the environment, and on the other the microscopic
scale, that of human metabolism – challenges a whole
range of binary relations, for example, the distinction
between interior and exterior space, private and public,
natural and artificial, human being and machine. What
are the consequences for architecture?
One of the most obvious consequences, for ex-
ample, is the transition from an understanding of
the wall as a tectonic element separating interior
and exterior realms to a concept of the wall as
strata. Spaces are defined nowadays by regulations
derived from thermal coefficients: a material with
good insulation properties will have a weak thermal
coefficient of 0.45 for example, another a coefficient
of 0.9, a window one of 1.1. These days, insulation
is assured by adding insulating layers. Instead of
adding one layer to another in a compact fashion,
as in glazing – simple, double, triple glazing – one
can also dilate the spaces between the glazing
layers and make them habitable. One would thus
inhabit a certain thermal coefficient; the space with
the lowest coefficient would be at the centre, that
92 archithese 2.2010
with the highest coefficient on the periphery. In this
way, the borders between inside and outside would
dissolve into different spatial thresholds. One would
no longer know where the interior begins: after the
first layer of glazing, after the second or, perhaps,
only after the third? The interior would be modulated.
It would then be possible to organise pro-
grammes in terms of their thermal coefficients, as I
did in 2006, in my project for the Kantor Museum in
Poland and, in 2007, in a competition for a school at
La Neuveville in Switzerland, where the architecture
was created by adding thermal layers: one level of
insulation for the toilets (which in winter could cor-
respond to a temperature of 15°C), two layers for
the corridors (160), three layers for the hall (180) and,
finally, four layers for the classrooms at the heart
of the building (200). This allows one to reinvest
space with a sense of the passing seasons, to leave
behind the climatic norms and uniformity that cur-
rent recommendations on sustainable development
unwittingly promote.
The architect’s role would hence no longer be simply to
question tectonic limits; he would also address the
border between the inside and outside of the human
body?
That is what I tried to do in my Hormonorium for
the Swiss pavilion in Venice, in 2002. The exhibition
space put nothing on view. There was nothing to
see. Interaction took place beneath the skin, at the
hormonal level: the light had an effect on melatonin,
the air on erythropoietin.
After that I began to study the relation between
climate and human physiology. For example, I asked
myself, whether the body is able to compensate for
a cold environment by absorbing sugar or proteins:
a process familiar to us in Saint Bernard dogs.
5
Similarly, in Japan one can buy a hot or cold drink
Similarly, in Japan one can buy a hot or cold drink
from a vending machine on every street corner: take
from a vending machine on every street corner: take
a can of hot coffee to warm oneself up in winter, and
a can of hot coffee to warm oneself up in winter, and
the reverse in summer. I often said to myself that
the reverse in summer. I often said to myself that
cool drinks in summer from these vending machines
cool drinks in summer from these vending machines
are a physiological replacement for cool arcades or
are a physiological replacement for cool arcades or
the shade of a tree, and have become as such a sort
the shade of a tree, and have become as such a sort
of alimentary portal, or an alimentary arcade – it’s as
of alimentary portal, or an alimentary arcade – it’s as
if an alimentary solution has replaced an architec-
if an alimentary solution has replaced an architec-
tural solution.
tural solution.
So it would be a matter of redefining architec- ture, no
longer solely as a tectonic problem but also as a
technical challenge – by introducing air-conditioning or
light to a situation, for ex- ample – or even as a
biological challenge – by acting upon the metabolism?
So it would be a matter of redefining architec- ture, no
longer solely as a tectonic problem but also as a
technical challenge – by introducing air-conditioning or
light to a situation, for ex- ample – or even as a
biological challenge – by acting upon the metabolism?
So it would be a matter of redefining architec- ture, no
longer solely as a tectonic problem but also as a
technical challenge – by introducing air-conditioning or
light to a situation, for ex- ample – or even as a
biological challenge – by acting upon the metabolism?
So it would be a matter of redefining architec- ture, no
longer solely as a tectonic problem but also as a
technical challenge – by introducing air-conditioning or
light to a situation, for ex- ample – or even as a
biological challenge – by acting upon the metabolism?
So it would be a matter of redefining architec- ture, no
longer solely as a tectonic problem but also as a
technical challenge – by introducing air-conditioning or
light to a situation, for ex- ample – or even as a
biological challenge – by acting upon the metabolism?
So it would be a matter of redefining architec- ture, no
longer solely as a tectonic problem but also as a
technical challenge – by introducing air-conditioning or
light to a situation, for ex- ample – or even as a
biological challenge – by acting upon the metabolism?
So it would be a matter of redefining architec- ture, no
longer solely as a tectonic problem but also as a
technical challenge – by introducing air-conditioning or
light to a situation, for ex- ample – or even as a
biological challenge – by acting upon the metabolism?
Exactly. The canned drink is potable micro-archi-
Exactly. The canned drink is potable micro-archi-
tecture.
tecture.
You’ve contented yourself to date with making
installations. You haven’t yet built anything.
You’ve contented yourself to date with making
installations. You haven’t yet built anything.
I have some interesting projects in the pipeline: resi-
I have some interesting projects in the pipeline: resi-
dential and commercial commissions.
dential and commercial commissions.
Is that realistic? Your approach is above all else a
critical one; it seems little suited to practice.
Is that realistic? Your approach is above all else a
critical one; it seems little suited to practice.
Is that realistic? Your approach is above all else a
critical one; it seems little suited to practice.
Is that realistic? Your approach is above all else a
critical one; it seems little suited to practice.
I don’t think that’s the case. What you call a crit-
I don’t think that’s the case. What you call a crit-
ical approach is for me a matter of renewing the
ical approach is for me a matter of renewing the
language of architecture. And it is with this new
language of architecture. And it is with this new
language that I want to build.
language that I want to build.
French-English translation by Jill Delton
French-English translation by Jill Delton
5 Philippe Rahm architectes, Convective Building, Housing for
IBA Hamburg, 2010 (image: Philippe Rahm architectes)
6+7 Philippe Rahm architectes, Vaporized Building, Office
building
for EPAD-EPASA La Défense, Paris, 2010 (images: Philippe
Rahm
architectes)
67
Philippe Rahm, born in 1967, studied architecture at the Swiss
Federal
Insitute of Technology in Lausanne (EPFL) and Zurich where he
obtained his degree in 1993. He tought at L’École nationale
supérieure
de Beaux-Arts Paris, EPFL, Architectural Association London,
Accademia di architettura Mendrisio and L’École nationale
supérieure
d’architecture Paris-Malaquais. Currently he is a guest
professor at the
Royal Danish Academy of Fine Arts in Copenhagen. In 2002, he
was
chosen to represent Switzerland at the 8th Interna- tional
Architecture
Exhibition, la Biennale di Venezia. Exhibi- tions at CCA
Montreal,
MoMA, Bienal de Valencia 2003, CCA Kitakyushu, Mori Art
Museum
Tokyo, FRAC centre Orléans, Centre Pompidou Paris, Manifesta
7 and
Louisiana Humlebæk. He works in Paris and Lausanne.
Laurent Stalder has served as Assistant Professor to the Chair of
the
Theory of Architecture at ETH Zurich since Feb- ruary 2006.
Focal
points of his research and published work have been the history,
criticism and theory of architecture from the 19th to 21st
centuries in
Europe and North America.
93 93

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Philippe Rahm Interview on Form and Function Following Climate

  • 1. DEPARTEMENT ARCHITEKTUR ETH ZÜRICH BAUTEN/BAUEN – ARCHITEKTURLABOR SCHWEIZ: INTERVIEW 3 Philippe Rahm: “Form and Function follow Climate” PHILIPPE RAHM INTERVIEWED BY LAURENT STALDER Buildings/building – Swiss Architecture Laboratory (Bauten/bauen – Architekturlabor Schweiz) is a two-year lecture and inter- view series to be held by the Department of Architecture at ETH Zurich. Swiss architects will be invited to explore new trajectories in architecture and urban design in a sequence of lectures. In parallel, interviews will be con- ducted, with excerpts appearing regularly in archithese. The interviews will be published in their entirety in a compilation in book form at the conclusion of the series. A central premise of your work is that the para- digm shift that took place in Human Sciences in the 1990s has had repercussions also for architecture. When I graduated in the 1990s, I was initially inter- ested in the chemical and physical qualities of mater- ials. I wanted to adopt a position on architecture as
  • 2. defined by Hegel, namely that architecture, owing to its materiality, occupies the bottom rung of the artis- tic ladder, so to speak, subject as it is to weight, the climate and erosion. However, the implication here was not simply to think about individual materials in isolation but rather to understand the connections that exist between them. My work with my former firm, Décosterd & Rahm, associés, was thus rooted from the start in the notion of interconnectedness, of an eco-system. It rested on the hypothesis that materials are not isolated from one another but inter connected by a series of chemical, physical and biological transformations. For example, the potas- sium and phosphate found in certain stones nourish the soil when they decompose as a result of expos- ure to air or water. Photosynthesis subsequently allows carbon dioxide and water to metamorphose as oxygen and glucose. It was on the basis of this
  • 3. thesis, that we built in 1995 the annexe of a private 88 archithese 2.2010 residence from concrete, the stony aggregates of which contained the two aforementioned elements. In eroding over time, the house would replenish the soil with the minerals that plants need in order to grow. At the end of the 1990s, following the arrival of new technologies such as mobile phones and the internet, there emerged the notion of an elec- tromagnetic field and hence, the idea that matter is not only visible but invisible, electromagnetic. From then on, electromagnetic geography superposed itself on physical geography. In 1998, also, the first federal provisions on electromagnetic pollution were published, to regulate thresholds of non-ionising ra- diation. Paradoxically, that which came to be called “information highways” generated smog, just as real highways do. The field of architecture and urbanism
  • 4. had thus slid towards the invisible dimension. Sure, one didn’t know so far (and still doesn’t) whether or not such dangers are real yet the very notion of an electromagnetic field opened up a new way of thinking about space. Space was from this point on no longer imagined simply as a void, as an absence defined by walls, floor and ceiling but as a less dense mass, disconnected, transparent and yet neverthe- less filled with material; a void invisible to the eye, certainly, but in which the body was immersed. The architect’s agenda would thus henceforth encompass not only the domain of the object but in a more general sense, that of the envir- onment? Yes, absolutely. Actually, I have never been interest- ed much in new technologies per se or as a means to generate new forms. I’ve always remained quite critical of this ongoing virtual, agravic, “paperless” dematerialisation of architecture. Thus in 1999, when I was invited to take part in an exhibition
  • 5. on new technologies in architecture, I proposed a critical project, the hormonal-web, in which I dem- onstrated the physical and biological aspects of the virtual. It was a question of demonstrating that, in spite of digital dematerialisation, a physiological link spite of digital dematerialisation, a physiological link continued to exist between the computer and the continued to exist between the computer and the user’s body, by virtue of the screen’s radiation on user’s body, by virtue of the screen’s radiation on the human eye. the human eye. This project subsequently developed under the This project subsequently developed under the name i-weather.org, a sort of climatic cycle for the name i-weather.org, a sort of climatic cycle for the inter net that develops in time with a 25-hour circa- inter net that develops in time with a 25-hour circa- dian rhythm linked to the hormone melatonin. dian rhythm linked to the hormone melatonin. Does scientific progress transform architects’ field of knowledge? Does scientific progress transform architects’ field of
  • 6. knowledge? Does scientific progress transform architects’ field of knowledge? Yes. For example, reinforced concrete and steel Yes. For example, reinforced concrete and steel have totally transformed our conception of space. have totally transformed our conception of space. These new materials allowed a spatial arrangement These new materials allowed a spatial arrangement determined by closed, juxtaposed rooms, linked by a corridor, to be replaced by Le Corbusier’s or Mies a corridor, to be replaced by Le Corbusier’s or Mies van der Rohe’s free plan, by fluid space. I believe van der Rohe’s free plan, by fluid space. I believe that knowledge of the physical, electromagnetic and that knowledge of the physical, electromagnetic and chemical dimensions of space will modify the nature chemical dimensions of space will modify the nature of contemporary architecture in the same way. of contemporary architecture in the same way. You define this paradigm shift in architecture as the transition from “physical” architecture to “physiological” or “atmospheric” architecture. You define this paradigm shift in architecture as the
  • 7. transition from “physical” architecture to “physiological” or “atmospheric” architecture. You define this paradigm shift in architecture as the transition from “physical” architecture to “physiological” or “atmospheric” architecture. You define this paradigm shift in architecture as the transition from “physical” architecture to “physiological” or “atmospheric” architecture. You define this paradigm shift in architecture as the transition from “physical” architecture to “physiological” or “atmospheric” architecture. You define this paradigm shift in architecture as the transition from “physical” architecture to “physiological” or “atmospheric” architecture. What do you understand by this? What do you understand by this? This terminology is part of the language of the This terminology is part of the language of the manifesto. The discovery of the atmospheric di- mension of architecture has allowed us to distance mension of architecture has allowed us to distance ourselves from a Swiss debate that – in the 1990s, ourselves from a Swiss debate that – in the 1990s,
  • 8. in the wake of Herzog & de Meurons’ first projects – in the wake of Herzog & de Meurons’ first projects – focussed only on materials’ narrative or symbolic focussed only on materials’ narrative or symbolic properties. Concentrating on the physiological and properties. Concentrating on the physiological and consciously excluding from our research all that consciously excluding from our research all that might have clouded this dimension, allowed us to might have clouded this dimension, allowed us to apprehend space in a novel, unexpected way, since apprehend space in a novel, unexpected way, since it was determined by unexplored givens. Thermal it was determined by unexplored givens. Thermal imaging and x-rays do actually allow space to be imaging and x-rays do actually allow space to be visualized differently. Light, for example, a classic visualized differently. Light, for example, a classic element of the language of architecture, has been element of the language of architecture, has been enriched since the 1980s by a biological dimension, enriched since the 1980s by a biological dimension, for its intensity and the length of its waves have for its intensity and the length of its waves have
  • 9. been shown to influence the hormone melatonin. In consequence, architecture is no longer simply the expression of the play of light and shade on bodies and materials but attains a physiological dimension. Such discoveries opened up a new field of research with new implications, with unheard-of design ra- tionales. I called this field “physiological architecture”. But how can one reconcile this desire for rup- ture with notions that remain on the whole very traditional: such as that of “the atmosphere” so entrenched in Swiss architectural debates of the 1990s? I see myself as heir to a certain Swiss tradition and to its interest in questions of ambiance linked to the materiality of objects. However, my work moved very rapidly beyond the idea of memory, reference or analogy in favour of a sensual and immediate per- ception of the odour, the length of a wave, the level of humidity. It’s therefore not so much the visual or semantic dimensions of atmosphere that are central
  • 10. to my work as the physiological or meteorological di- mensions, in the primary, literal sense of these terms. This mistrust of form transpires in another of your postulates. You don’t trace the paradigm shift of the 1990s back solely to the transition from “the physical” to “the physiological” but also to the transition from a concept of architec- ture as a problem of form to that of architecture as a performance issue. What do you under- stand by this? In the classical tradition, in the work of Vitruvius or Alberti, the emergence of form seems to be linked with harmony and symmetry and their relation to the human body. Then, in Modern architecture, form becomes the expression of function. It is the body that deforms space, the length of an arm that de- termines the size of a kitchen. In the 1990s, with the emergence of the minimalist “Swiss box”, the ques- tion of form became linked with materials, with their sculptural qualities and surface. For my part, I was no longer interested in the building envelope but in what it contains, no longer in the envelope’s matter but in that of space: in the void. My first projects
  • 11. were consequently very “informal”. Then, little by little, by investigating not only the chemical but also the physical characteristics of the air – the fact that warm air rises for example, and the displacement of humidity – I was able to generate a catalogue of forms determined by these conditions. So what you mean by performance in architec- tural terms is control of the interior climate? Yes. The primary role of the architect is to modify or adapt a climate to human needs: to raise the temperature when it is cold, the measure of light when it is dark. The very essence of architecture is therefore to create an environment that differs from the exterior environment, be this in terms of 1 Philippe Rahm archi- tectes, Digestible Gulf Stream, 12th International Architecture Exhibition, La Bienale di Venezia, 2008 (photo: Noboru Kawagishi) temperature, humidity, air or sound. The notion of temperature, humidity, air or sound. The notion of
  • 12. climate or atmosphere is thus fundamental to archi- tecture. I think that ultimately the mass is secondary tecture. I think that ultimately the mass is secondary to the void. Paradoxically, the history of architecture to the void. Paradoxically, the history of architecture did not assign this status to it. did not assign this status to it. Control of the climate is consequently architec- ture’s principal task? Control of the climate is consequently architec- ture’s principal task? Control of the climate is consequently architec- ture’s principal task? Yes. There’s no other choice. But I wouldn’t use Yes. There’s no other choice. But I wouldn’t use the term “control”, with its modern, normative con- the term “control”, with its modern, normative con- notations. I would rather say, that design of the atmosphere is now the domain of architecture. And atmosphere is now the domain of architecture. And the new ecological norms accentuate that. Today, the new ecological norms accentuate that. Today, interior space is insulated to the point where one interior space is insulated to the point where one
  • 13. can practically heat a house with the flick of a lighter. can practically heat a house with the flick of a lighter. But this gives rise to new problems such as oxygen But this gives rise to new problems such as oxygen renewal, evacuation of the humidity that ensues renewal, evacuation of the humidity that ensues from respiration, or adjustment of temperatures to from respiration, or adjustment of temperatures to 22°, 19° or 16°Celsius, depending on what a space 22°, 19° or 16°Celsius, depending on what a space 89 89 is to be used for. One can see that the exigencies of sustainable development are causing an increas- ingly dramatic and fundamental shift in architecture, from the tectonic to the climatic, the visible to the invisible dimensions. The well-tempered environment, a concept de- fined in terms of its mechanical dimension by Reyner Banham in 1969, was the theme of your installation for the Venice Biennale in 2008. Yes, that’s right. But I discovered the work of the
  • 14. 1950s and 1960s relatively late: the projects of Yves Klein or Andrea Branzi, for example, or the theoretical writings of Reyner Banham and Michel Ragon. Actually, between the 1960s and my project for the Biennale in 2008, Digestible gulf stream, Postmodernism served to eclipse this evolution. By setting up a situation of thermal asymmetry – convection transfer from a warm pole at 24°Celsius to a cold pole at 16°Celsius – my project sought to create a varied thermal landscape. Obviously, in- habitants’ behaviour changes according to the tem- 90 archithese 2.2010 perature of the space they find themselves in. On the lower plateau, heated to 24°Celsius, it’s possible to be naked. The climate is paradisical, summery, voluptuous. The quest for this type of environment is inscribed in a long tradition that oscillates between Monte Verita, Shangri-la, the Golden Age, hippy open-air events and Arcadia. By contrast, the cooler
  • 15. temperature of 16°Celsius emitted by the higher plateau creates a more hostile environment. It would be interesting to write a “thermal” history of design and its relationship to the interior climate. In films of the 1960s, the domestic landscapes in which skimpily-clad girls dance barefoot on pile carpets suggest an interior climate of around 23 to 24°Cel- sius. Following the oil crisis in the 1970s, the interior temperature drops to 18°Celsius. These changing conditions lead people to turn down their heating. They’re obliged to wear heavy woollen sweaters, even indoors. In the same way, the domestic land- scape of the 1970s becomes stiffer; it forces people to stand up, to abandon the floor. Insofar my Digest- ible gulf stream is only fifty per cent a 1960s revival; the other fifty per cent is a 1970s revival. Architecture the other fifty per cent is a 1970s revival. Architecture thus allows for the production of diverse environ- thus allows for the production of diverse environ-
  • 16. ments, rich in contrasts. It’s possible to totally recre- ments, rich in contrasts. It’s possible to totally recre- ate a Spanish summer, a Tahitian springtime, a Swiss ate a Spanish summer, a Tahitian springtime, a Swiss winter, simply by regulating the levels of humidity winter, simply by regulating the levels of humidity and luminosity, and the position and intensity of heat sources. Architecture does not simply create spaces sources. Architecture does not simply create spaces that protect one from wind and rain; it also allows for that protect one from wind and rain; it also allows for different temporal zones because, in moving from different temporal zones because, in moving from one space into another, it is now possible to make one space into another, it is now possible to make a spatial-temporal leap from the south to the north, a spatial-temporal leap from the south to the north, from daytime to nighttime, similar to that which one from daytime to nighttime, similar to that which one experiences in Switzerland in winter, when crossing experiences in Switzerland in winter, when crossing the threshold to enter one’s home. the threshold to enter one’s home. Which leads to your equation, “form and func- tion
  • 17. follow climate”? Which leads to your equation, “form and func- tion follow climate”? Which leads to your equation, “form and func- tion follow climate”? Which leads to your equation, “form and func- tion follow climate”? The formula derives from two or three projects from The formula derives from two or three projects from 2005, in which I investigated the interrelation of humid- 2005, in which I investigated the interrelation of humid- ity levels, temperature, air circulation and arch itectural ity levels, temperature, air circulation and arch itectural space. It’s based on simple propositions: a human space. It’s based on simple propositions: a human being emits thirthy grams of humidity per hour when being emits thirthy grams of humidity per hour when 3 2 sleeping, simply by breathing, 150 grams per hour when active, and up to 1500 grams per hour when taking a shower. Our activities thus contribute to progressively raising the level of humidity in the air
  • 18. around us. Consequently, spatial organisation must be designed in the light of our different activities, in accordance with various data on the interior climate. Such data are important when air renewal is control- led by the double-flux heat exchanger stipulated by the new environmental norms. Normally, the architect organises his plan to suit the proposed functions of a space and introduces a ventilation system only later. I asked myself if it might be possible to reverse this proposition, in such a way that form and function would follow the climate. In consequence, spaces would no longer be organ- ised in accordance with functional principles but in terms of ventilation. The house would literally be designed on a current of air, going from dry to humid. That’s the plan for the Mollier house project. The stratified design of the Archimedes House at Vassivière corresponds to the air current that runs
  • 19. through the building. The project proposes that one imagines the house in its entirety in the light of the fact that warm air rises, and distributes various usages of the house according to the temperatures they require: thus at the very top of the house, one finds the bathroom, the living room below that, the kitchen below that, and the bedrooms on the ground floor. The circulation of air thus generates a new spatial organisation, a new typology that closely complies with Swiss SIA norms. In fact, the latter recommend themselves that temperatures be vari- able and reflect inhabitants’ activities. This climatic as opposed to functional approach to the project updates the environmental principles that one finds already in vernacular architecture: 2 Philippe Rahm archi- tectes, Domestic Astron- omy, Louisiana Museum, Denmark, 2009 (Photo: Brøndum & Co) 3 Philippe Rahm archi- tectes, Diurnisme, Centre Pompidou, Paris, 2007 (Photo: Adam Rzepka)
  • 20. 4 Décosterd & Rahm, associés, Hormonorium, 8th International Architec- ture Exhibition, la Bienale di Venezia, 2002 (Photo: Niklaus Stauss) 4 warm spaces have always been south-facing, cold spaces where milk and other foodstuff were stored north-facing, dry spaces for hay in the roof space, and humid ones in the cellar. The defining factor here was therefore not the purpose of a space but its temperature. Spaces might equally be multipurpose. In the inhabited parts of some houses, the room with a hearth served both as a kitchen and living room and perhaps also as a place of repose for the elderly. This independence of form and function is even more striking in other cases, for example in trad- itional houses in Baghdad. Rooms there do not have a fixed function. Rather, their function changes in the course of the day and the course of the year. Usage
  • 21. is determined by temperature: the roof may become the bedroom in summertime, for example. It is no accident that the names of rooms are linked not to their function but to different climates. What is this need you have, to inscribe yourself in an environmentalist discourse? It permeated your writings in recent years and you refer to it here – yet to me, it seems reductive. It’s a question of contingency. The environmen- tal concerns that arose shortly before 2005 finally provided a context for my work on physiological architecture. Physiological architecture acquires pertinence in the present framework of sustainable development and it facilitates a critique of a too narrow reading of technical or functionalist environ- mentalism. But sustainable development per se is of interest to me only insofar as it allows me to find new forms and new ways of designing architecture. Every quest for comfort, be it in terms of organ- ising space or, as in your work, the “biological” or even “physiological” dimensions of space, is
  • 22. linked to the issue of control. As you admit in an interview in the magazine ICON, work on the “physiological” data of a dwelling enables you linked to the issue of control. As you admit in an interview in the magazine ICON, work on the “physiological” data of a dwelling enables you linked to the issue of control. As you admit in an interview in the magazine ICON, work on the “physiological” data of a dwelling enables you linked to the issue of control. As you admit in an interview in the magazine ICON, work on the “physiological” data of a dwelling enables you linked to the issue of control. As you admit in an interview in the magazine ICON, work on the “physiological” data of a dwelling enables you linked to the issue of control. As you admit in an interview in the magazine ICON, work on the “physiological” data of a dwelling enables you not only to control but also to manipulate fac- tors such as sleepiness, mood, wellbeing and so forth. In that interview you even use the term “perversion” to describe this potential. not only to control but also to manipulate fac- tors such as sleepiness, mood, wellbeing and so forth. In that interview you even use the term “perversion” to
  • 23. describe this potential. not only to control but also to manipulate fac- tors such as sleepiness, mood, wellbeing and so forth. In that interview you even use the term “perversion” to describe this potential. not only to control but also to manipulate fac- tors such as sleepiness, mood, wellbeing and so forth. In that interview you even use the term “perversion” to describe this potential. not only to control but also to manipulate fac- tors such as sleepiness, mood, wellbeing and so forth. In that interview you even use the term “perversion” to describe this potential. not only to control but also to manipulate fac- tors such as sleepiness, mood, wellbeing and so forth. In that interview you even use the term “perversion” to describe this potential. not only to control but also to manipulate fac- tors such as sleepiness, mood, wellbeing and so forth. In that interview you even use the term “perversion” to describe this potential. not only to control but also to manipulate fac- tors such as sleepiness, mood, wellbeing and so forth. In that interview you even use the term “perversion” to
  • 24. describe this potential. I work on the climate, on climatic parameters, and I work on the climate, on climatic parameters, and I render them visible, so one might well imagine I’m I render them visible, so one might well imagine I’m responsible for them. In reality, all I do is exploit new responsible for them. In reality, all I do is exploit new scientific findings. I didn’t invent this link between scientific findings. I didn’t invent this link between the hormonal cycle and light. But it happens to exist. the hormonal cycle and light. But it happens to exist. However, we’re not obliged to biologically manipu- However, we’re not obliged to biologically manipu- late people just because architecture has gained a late people just because architecture has gained a biological dimension. No more than we are obliged biological dimension. No more than we are obliged to build solid walls simply because we invented to build solid walls simply because we invented concrete. concrete. In the ICON interview, I was led by the idea that
  • 25. In the ICON interview, I was led by the idea that my work ensued from a sort of second perversion. The first perversion was modernity’s domain since, The first perversion was modernity’s domain since, as Heidegger so aptly described, it perverted natural as Heidegger so aptly described, it perverted natural cycles, transformed day into night, winter into sum- cycles, transformed day into night, winter into sum- mer. This Modernist project is now over. mer. This Modernist project is now over. In Diurnisme, my installation for the Centre Pom- In Diurnisme, my installation for the Centre Pom- pidou from 2007, I therefore proposed to pervert pidou from 2007, I therefore proposed to pervert perversion of modernity. It was a double perversion. perversion of modernity. It was a double perversion. Indeed, while modernity created non-stop daytime by Indeed, while modernity created non-stop daytime by using city lights to suppress the alternation of day and using city lights to suppress the alternation of day and night, thereby transforming the shape of cities and night, thereby transforming the shape of cities and the nature of urban lifestyles (as in night-owls, nightlife, the nature of urban lifestyles (as in night-owls, nightlife,
  • 26. evenings at the theatre or at balls, etc.), in Diurnisme I evenings at the theatre or at balls, etc.), in Diurnisme I tested continuous night or, to be more precise, a false tested continuous night or, to be more precise, a false night in false daylight during a real night. night in false daylight during a real night. It’s a fact that nocturnal pollution disturbs natural biorhythms. In the daytime, light blocks the human biorhythms. In the daytime, light blocks the human body’s secretion of melatonin, which influences the body’s secretion of melatonin, which influences the sleep cycle. By contrast, the body secretes large sleep cycle. By contrast, the body secretes large 91 91 quantities of melatonin at night. In my project I tried to reintroduce nighttime without re-extinguishing the light. It was a matter not of retracing steps but of going a step further. I therefore worked on the length of those light waves that don’t affect melatonin: the length of light waves over 600 nanometres, which show extreme luminous intensity in the oranges/
  • 27. yellows, like high noon, at 7000 lux. The body’s bio- logical rhythm is thereby exposed to something like the nocturnal situation yet in full daylight. Diurnisme is the creation of a false night in the false daytime of modernity. This approach to architecture – which con- cerns on the one hand the macroscopic scale, that of the environment, and on the other the microscopic scale, that of human metabolism – challenges a whole range of binary relations, for example, the distinction between interior and exterior space, private and public, natural and artificial, human being and machine. What are the consequences for architecture? One of the most obvious consequences, for ex- ample, is the transition from an understanding of the wall as a tectonic element separating interior and exterior realms to a concept of the wall as strata. Spaces are defined nowadays by regulations derived from thermal coefficients: a material with good insulation properties will have a weak thermal coefficient of 0.45 for example, another a coefficient
  • 28. of 0.9, a window one of 1.1. These days, insulation is assured by adding insulating layers. Instead of adding one layer to another in a compact fashion, as in glazing – simple, double, triple glazing – one can also dilate the spaces between the glazing layers and make them habitable. One would thus inhabit a certain thermal coefficient; the space with the lowest coefficient would be at the centre, that 92 archithese 2.2010 with the highest coefficient on the periphery. In this way, the borders between inside and outside would dissolve into different spatial thresholds. One would no longer know where the interior begins: after the first layer of glazing, after the second or, perhaps, only after the third? The interior would be modulated. It would then be possible to organise pro- grammes in terms of their thermal coefficients, as I did in 2006, in my project for the Kantor Museum in Poland and, in 2007, in a competition for a school at
  • 29. La Neuveville in Switzerland, where the architecture was created by adding thermal layers: one level of insulation for the toilets (which in winter could cor- respond to a temperature of 15°C), two layers for the corridors (160), three layers for the hall (180) and, finally, four layers for the classrooms at the heart of the building (200). This allows one to reinvest space with a sense of the passing seasons, to leave behind the climatic norms and uniformity that cur- rent recommendations on sustainable development unwittingly promote. The architect’s role would hence no longer be simply to question tectonic limits; he would also address the border between the inside and outside of the human body? That is what I tried to do in my Hormonorium for the Swiss pavilion in Venice, in 2002. The exhibition space put nothing on view. There was nothing to see. Interaction took place beneath the skin, at the
  • 30. hormonal level: the light had an effect on melatonin, the air on erythropoietin. After that I began to study the relation between climate and human physiology. For example, I asked myself, whether the body is able to compensate for a cold environment by absorbing sugar or proteins: a process familiar to us in Saint Bernard dogs. 5 Similarly, in Japan one can buy a hot or cold drink Similarly, in Japan one can buy a hot or cold drink from a vending machine on every street corner: take from a vending machine on every street corner: take a can of hot coffee to warm oneself up in winter, and a can of hot coffee to warm oneself up in winter, and the reverse in summer. I often said to myself that the reverse in summer. I often said to myself that cool drinks in summer from these vending machines cool drinks in summer from these vending machines are a physiological replacement for cool arcades or are a physiological replacement for cool arcades or the shade of a tree, and have become as such a sort the shade of a tree, and have become as such a sort
  • 31. of alimentary portal, or an alimentary arcade – it’s as of alimentary portal, or an alimentary arcade – it’s as if an alimentary solution has replaced an architec- if an alimentary solution has replaced an architec- tural solution. tural solution. So it would be a matter of redefining architec- ture, no longer solely as a tectonic problem but also as a technical challenge – by introducing air-conditioning or light to a situation, for ex- ample – or even as a biological challenge – by acting upon the metabolism? So it would be a matter of redefining architec- ture, no longer solely as a tectonic problem but also as a technical challenge – by introducing air-conditioning or light to a situation, for ex- ample – or even as a biological challenge – by acting upon the metabolism? So it would be a matter of redefining architec- ture, no longer solely as a tectonic problem but also as a technical challenge – by introducing air-conditioning or light to a situation, for ex- ample – or even as a biological challenge – by acting upon the metabolism? So it would be a matter of redefining architec- ture, no longer solely as a tectonic problem but also as a technical challenge – by introducing air-conditioning or light to a situation, for ex- ample – or even as a biological challenge – by acting upon the metabolism? So it would be a matter of redefining architec- ture, no longer solely as a tectonic problem but also as a technical challenge – by introducing air-conditioning or light to a situation, for ex- ample – or even as a biological challenge – by acting upon the metabolism?
  • 32. So it would be a matter of redefining architec- ture, no longer solely as a tectonic problem but also as a technical challenge – by introducing air-conditioning or light to a situation, for ex- ample – or even as a biological challenge – by acting upon the metabolism? So it would be a matter of redefining architec- ture, no longer solely as a tectonic problem but also as a technical challenge – by introducing air-conditioning or light to a situation, for ex- ample – or even as a biological challenge – by acting upon the metabolism? Exactly. The canned drink is potable micro-archi- Exactly. The canned drink is potable micro-archi- tecture. tecture. You’ve contented yourself to date with making installations. You haven’t yet built anything. You’ve contented yourself to date with making installations. You haven’t yet built anything. I have some interesting projects in the pipeline: resi- I have some interesting projects in the pipeline: resi- dential and commercial commissions. dential and commercial commissions. Is that realistic? Your approach is above all else a critical one; it seems little suited to practice. Is that realistic? Your approach is above all else a critical one; it seems little suited to practice. Is that realistic? Your approach is above all else a critical one; it seems little suited to practice. Is that realistic? Your approach is above all else a critical one; it seems little suited to practice.
  • 33. I don’t think that’s the case. What you call a crit- I don’t think that’s the case. What you call a crit- ical approach is for me a matter of renewing the ical approach is for me a matter of renewing the language of architecture. And it is with this new language of architecture. And it is with this new language that I want to build. language that I want to build. French-English translation by Jill Delton French-English translation by Jill Delton 5 Philippe Rahm architectes, Convective Building, Housing for IBA Hamburg, 2010 (image: Philippe Rahm architectes) 6+7 Philippe Rahm architectes, Vaporized Building, Office building for EPAD-EPASA La Défense, Paris, 2010 (images: Philippe Rahm architectes) 67 Philippe Rahm, born in 1967, studied architecture at the Swiss Federal Insitute of Technology in Lausanne (EPFL) and Zurich where he obtained his degree in 1993. He tought at L’École nationale supérieure de Beaux-Arts Paris, EPFL, Architectural Association London, Accademia di architettura Mendrisio and L’École nationale
  • 34. supérieure d’architecture Paris-Malaquais. Currently he is a guest professor at the Royal Danish Academy of Fine Arts in Copenhagen. In 2002, he was chosen to represent Switzerland at the 8th Interna- tional Architecture Exhibition, la Biennale di Venezia. Exhibi- tions at CCA Montreal, MoMA, Bienal de Valencia 2003, CCA Kitakyushu, Mori Art Museum Tokyo, FRAC centre Orléans, Centre Pompidou Paris, Manifesta 7 and Louisiana Humlebæk. He works in Paris and Lausanne. Laurent Stalder has served as Assistant Professor to the Chair of the Theory of Architecture at ETH Zurich since Feb- ruary 2006. Focal points of his research and published work have been the history, criticism and theory of architecture from the 19th to 21st centuries in Europe and North America. 93 93