Friday 16 December 2011

A R C H I T E C T U R A L H O M E O S TA S I S T H R O U G H R E C I P R O C A L D U A L I S M
YA N G A O


A S S I S TA N T P R O F E S S O R


Architecture is a discipline that can be re-written and re-interpret­ed differently depending on the conditions of its time. It needs both evolution and revolution. Architectural practitioners and scholars have never stop upgrading or updating the thinking of architecture. Most –isms so far, have always begun with destabiliz­ing the old in order to establish the new. Architecture reacts to the reality slowly and acts on the reality eventually. It learns from the new reality earlier, but often ignores the reality later for the sake of experimenting utopian ideologies inside the ivory tower. It is perhaps, the most volatile discipline compared with many others, e.g. physics, medicine, business, law, math, etc. It is autonomous, yet also constrained by many external factors and invisible forces. Architectural debates have never ceased. But all reach settlement eventually until different voices break out.

Architectural Homeostasis describes the properties of architecture according to the characteristics above. Homeostasis was ini­tially defined by Claude Bernard and later by Walter Bradford Cannon, which is the property of a system, either open or closed, that regu­lates its internal en­vironment and tends to maintain a stable, constant condition. Multiple dynamic equi­librium adjustment and regulation mechanisms make homeostasis possible. It doesn’t mean a constant stability, rather the interaction between flux and stability until a new balance is achieved in long term. It does not discourage changes, which leads to a higher degree of stability. Homeostasis is the philosophy for organism. Although architecture is not organism, yet it shares a number of properties when we write, talk and make architecture. What makes homeostasis possible to architecture is the synthesis of multi-negotiation between two opposites within the architectural discipline, e.g. paradox and conciliation with architecture, complexity and simplicity around architecture, contradiction and consistency of architecture, preciseness and uncertainty to architecture, and so on.

The path to homeostasis is through reciprocal dualism, the state of contrast to create distinguishable duality, upon which individual identity depends. It involves the process of feedback loops and double codifications (encode & decode), through which opposing forces do not counter work to weaken one another, but instead, interplay reciprocally to promote stabilization, i.e. homeostasis, similar to what Robert Venturi called “Equilibrium, which must be created out of opposites. Such inner peace as men gain must represent a tension among contradictions and uncertainties...”
The design philosophy of architectural homeostasis evolves ar­chitectural organizations that could be engineered into irreducible constructions. The agenda is to develop a kind of architecture that emerges from the game of deterministic concepts and in­formative operations. This approach channels two opposing design methodologies: implicit global descriptions and explicit local inscriptions.

Subjectivity & Objectivity

One of the most fun­damental opposites within architectural discipline is the con­ciliation between subjectivity and objectivity. Design journeys often run through the synthesis of complexity and multiplicity. Architecture could be understood as the medium that mediates subjectivity and objectivity instead of an ultimate object detached from subjective contexts (below). This becomes even more evident during globalization and rapid growth in the develop­ing countries such as China, where architecture has mutated into consuming products, political icons, financial devices, corruption means, media Hype, social status, etc. Architecture should neither surrender to these mutated forms, nor neglect their existence with a supreme gesture. Instead, she should learn how to coexist with them or even convert them, evolving to a new kind of being. The values of architecture in information era must be different from those in the old days. So do criteria when initiatives have changed, conditions are different and, tools are more sophisticated.

Top-down & Bottom-up

How to transcend the limit of subjectivity in design which relies on prescribed images from empirical visual references. In other word, how to overcome the inertia of style? One of the rudiment natures of human being is creativity, or, the intention to be differ­ent from others in order to express individuality. A creative voyage always starts from learning and mimicking. Creativity should be evaluated in association with Novelty, Resolution and Style.1 The most challenging part for a practice is, perhaps, Novelty, which could be liberated through balancing top-down and bottom-up approaches.






The top-down approach acknowledges relies on sketches at the beginning which determines design results afterwards. The situation changed when the bottom-up approach became possible as a consequence of computation. However, the development of computational design in the past decade encounters the same problems as Modernism, i.e. universality and obsession of making objects. The approach of architectural ho­meostasis in practic­ing computational design is the media­tion of top-down deci­sions and bottom-up executions that dilute the boundary between subjectivity and objectivity.

BOW2 is a pavilion gener­ated by the adaptation of local con­nections with top-down geometrical rules. Three elliptical curves intersect as the result of cutting three cylinders (extruded from the min/max circular con­straints of the site) with rotating planes according to orientation, accessibility, vista, and component assembling logic, to form a system of three grid-type twisty-surface beams supporting each other to ensure the overall structural stability. The global decisions are mostly made according to the properties of local connections with bottom-up approach, which was initiated for the stiffness and overall strength of laminated materials to create a pre-stressed structural unit, which can resist stresses to maintain structural integrity. By changing the widths of the bended aluminum sheets to fit local surface curvatures, we achieved continuously folded 3D twisting surfaces globally. BOW is a complex 3D as­sembly made out of simple 2D-based components by design intelligence rather than machinery processing.

From Function & Form to System & Effect

What is the alternative of function and form if they are not valid any longer in the fast changing time?

From “form follows function”, to “function follows form”, or “form defines function”, or “form is function”, all statements are based on the fact that form and function are the basic characters of architecture. Form can be understood as the visible appearance, shape, or configuration of an object described by physical materials. What if it is not an object but other beings? What if it cannot be presented with any physical materials? Now comes function. In Max Bill’s essay, Function and Gestalt (1958), he understood function as the relation between a minimum of two variables that are dependent on each other. He distinguished two groups of functions. The first one reveals the relations between the object and people. The second one reveals the relations between the components that make up the object and its production process. Form arises as the harmonious expression of the sum of all functions.

Today, when functions are flexible and changeable, when form is increasingly complex as consequence of new  urban conditions, what will be the alter­native intrinsic characters of ar­chitecture? I propose system and effect, the former reflects relationships and mechanisms form­ing an integrated whole, the latter indicates artificial results of architectural operations that is not limited to physical forms.


 
Real Vino Bar3 was inspired by the concept of a system for stor­ing red wine bottles while maximizing relationships with other elements inside the bar. A perforated panel system was set up for establishing an interest­ing relationship between the sizes of apertures and the profile of bottles. As a result, this system created a topographical field defined by the displacement of bottles, which can further denote a genuine constellation effect when light refracts through and reflects on the curvy glasses of the bottles. This system also incorporated acous­tic functions as well as the sign of Spanish Map which informed the perforated pattern.

Description & Inscription

How to streamline a smooth connection between two separated parts while distinguishing the identity of each side?

The concept of ATI 4 was inspired by the intrinsic qualities of Chinese calligraphy, which is a perfect example of reciprocal dualism for description and inscription. Described by Zong Baihua, aesthet­ics of Chinese calligraphy, “Variations in density of composition, light and heavy strokes, slow and fast brushwork all affect form and content. It is like picking out notes from the myriad sounds of nature in musical or artistic creations, developing laws of combin­ing those notes, and using variations in volume, pitch, rhythm, and melody to express images in nature and society and the feelings in one’s heart.” It immerses subjective feeling into the objective presence of ink and void on paper through movements in time and space. The essential quality of Chinese Calligraphy is the negotia­tion between positive shape - ink, and the negative space – void. Emotion is inscribed into the movements of brush onto a blank paper and described by the calligraphy as a whole. Based upon this interpretation, the cross­ing facilities were inscribed as a collection of multiple strokes, each of which is classified into different movements (stationary strokes for office, slow strokes for passenger crossing and, fast strokes for vehicle crossing) to describe the con­cepts, which is manifested through the following three aspects:



Connection and Division: A lot of territorial divisions require physical connection while maintaining their distinct identities. For many, crossing a border has become a daily event from the experience of once a year or even once a life. A purely functional border crossing facility now needs a more significant architectural link. A discontinuous continuum is the effect that we aimed to achieve for ATI Project. Instead of concealing all movements into an enclosed box like the current border crossing building type, the key idea is the emphasis on the connection between passengers and sur­rounding environment to re-establish the perception of spatial changes through time. Thus, architectural form (representation of objectivity) becomes the medium to bridge individual perception (representation of subjectivity) with surrounding nature. Three methods were used to re-establish the connection: Firstly, offices were squeezed above the passenger crossing to either side of the building in order to bring roof light into the deep plan. Secondly, a series of evolving sections were torn apart as slits on the first floor which enabled the ground floor to have direct connection to sky as well. Lastly, greeneries were placed between the office extrusions along either side.




Time vs. Space: Baruch Spinoza rejected the distinction between space and time with the belief that such distinction was meaning­less to God. “The illusion that a thing called time existed was the result of mankind having made the thing called space independ­ent.”5 Instead of contradicting against each other, time and space are never separated in Universe, as for human the experience of moving through space bridges perception of time with sub­stances around. Speed of movement echoes the reciprocal dualism of space and time.

The changing speeds of movement during the whole border-crossing experience follow the pattern of fast (entrance), slow (queue for departure customs), fast (river crossing), slow (arrival customs) and, fast (exit). The pattern was inscribed into the generation of sectional series by intersecting the “strokes” with plans that were arrayed in differen­tiated spacing and rotating angles. Herein, the formal operation is the incarnation of speed of movement. Time melted into space.



Natural Artifact vs. Artificial Nature: How to merge the dichotomy characteristics of the border location where the natural landscape of Hong Kong meets the artificial urban-scape of Shenzhen into one entity? A green network at the podium level was proposed to organize staff circulation and vehicle flow, as well as greenery and water recycle systems along the crossing trajectory, i.e. Artificial Nature. The main BCP6 Building with simple outer boundaries while complex inner boundaries, strikes cross the border as one porous strand torn apart to absorb the surrounding nature into the building, i.e. Natural Artifact.
Sustainability and Development
How to, within a given short period of time, achieve the equal quality of collective buildings as those which evolve through a long time? Or in a simple version, how to customize and automate non-standard design products according to complex site topography?

Economic development has become the irresistible force sweeping all over China. Internationalism clashes with regionalism. The tension between cities and villages intensifies at suburbs. How to sustain the culture merits which are beneficial to the local major­ity, meanwhile favoring the political and commercial interests of the local minorities, is one of our focuses. The lack of sustainability as most vernacular architecture has is because, as we believe, essentially the rapid speed of development. Consequently, in order to meet the deadline, it has to erase the architectural diversity and adaptability, which can only be achieved through evolution after a long time before computational design. Can we design one-off developments with the same sustainable qualities as vernacular architecture offers? Intelligent computation in line with subjective design interference makes it pos­sible.





Instead of taking for granted the conventional way of 2D master plan, we started Kaili Project with a new way of 3D planning, i.e. computing the gra­dients of the site topography locally for the most appropriate building platforms which then generate individual houses in vernacular style. The techniques for intelligent massing were explored in real time. As a result, no single house was identical and all adapted to the topography perfectly. According to the design brief, a series of evolutionary design strategies were made for further teething out both the build­ings in different shapes and public spaces in various scales on top of the massing outcomes. A massive, automated and valid customization conveys collective buildings with the similar qualities of the local architectural typology, i.e. both genuine and diversified, sustainable in the cultural and economic dimensions beyond the ecological dimension.


Both… And…


I would like to quote Robert Venturi’s words in his early book Complexity and Contradiction in Architecture at the end of this es­say: “I am for richness of meaning rather than clarity of meaning; for the implicit function as well as the explicit function. I prefer ‘both-and’ to ‘either-or,’ black and white, and sometimes gray, to black or white. A valid architecture evokes many levels of meaning and combinations of focus: its space and its elements become readable and Workable in several ways at once.”


“Both…And…” reflects the dualism in architecture, but not yet re­ciprocal dualism, which needs some chemical reactions, i.e. effec­tive architectural operations, between the two opposites instead of accepting the initial status of the opposites, within and beyond the scope of architecture, towards the architectural homeostasis. The short time revolution would be absorbed into the long time evolution. What keeps the architectural evolution moving is the faith of the truth governing architecture as all the –isms have tried with either retrospective or forward thinking. However, the question is, are there indeed the truth? Perhaps the answer itself is not important. What mat­ters is the exploration for the answer. We need both thinking and acting to contin­ue the architectural pilgrim.
S


M

Scripted Vernacular Architecture - Invisible Computation

Scripted Vernacular Architecture Invisible Computation

By GAO, Yan[i]

July 2011

Within a given short period of time, how to achieve the equal quality of collective customization as vernacular architecture does through a long time? How to systematize vernacular styles without losing its semiotic meaning to the local community in the context of computational design?

Computational design has been mostly used to explore new forms for pushing the boundary of architectural discipline. More and more surprising “architecture” is generated by scripting to make people so dizzy that it seems anything can dress up as “architecture”, no matter what the “body” may be. It reminds me the Avant-garde architects in 1920s who naively believed new technology can bring human being a beautiful world, whereas the world evolves into many depressions and even the two world wars. Architects tend to be heroistic with the belief that they can save the world. Consequently, architecture has to bear obligations to resolve all the problems which would never follow the same way as the architects wish. It is true that this digital wave has changed architectural design for the first time in many aspects, such as influencing design thinking, changing design processes and, equipping architects with tools as advanced as those for creating artificial intelligent life. All the values of architecture have become so intangible that young architects often follow the visual madness rather than the thoughtful calmness.

Rather than keeping pushing the boundary of architecture, we are more interested in how to immerse the digital means into the synthesis of architectural design including social and economic values. This is why we look into new possibilities for vernacular architecture which has been formulated and is ready for a new creative presence.

Undeveloped regions in China

Economic development has become the irresistible force sweeping all over China where internationalism clashes into Regionalism. The tension between cities and villages intensifies at suburbs. How to sustain the culture merits which are deeply rooted in the local majority, meanwhile favoring the political and commercial interests of the minorities, is one of our main agendas for applying computational approaches. For new real estate developments in those areas, the lack of sustainability compared to the vernacular living environment is essentially because of the rapid speed of development for both political and economic reasons. Consequently, in order to meet the deadline, it has to erase architectural diversities and adaptability, which can be only achieved through the evolution for a long time. Can we design out one-off developments with the same qualities as vernacular architecture has? Intelligent computation together with empirical design sensation makes it possible.

Find architectural platforms

This essay is based on a project near Gui Yang, the capital of Guizhou Province[ii]. The gross land surface area is 95 ha. It comprises a high end resort, commercial streets, a museum, leisure & sport facilities and, residential buildings. The site location is between the old city center and the new city district triggered by the national high speed railway. fig 1
Fig 1

Our first challenge is the rugged site topography. For mountain architecture, how to make the best of lands in terms of controlling costs,  improving land using efficiencies and, stimulating coherent sceneries in site contexts, are among the issues haunting around many architects. Recently the central government has been stringent about the codes for mountain architecture after several fetal landslides and mud-rock flow occurred in southern China, e.g. to forbid any structure on slops with a gradient of more than 30 degree. In correspondence to this, we started this planning project directly in 3D by reading point coordinates (fig 2) on a survey map and translated them into a 3D mesh surface, so that many design decisions can be based on this relatively accurate 3d surface model with color-coded slope gradients (fig 3). Another obvious advantage was that we liberated from the survey map which always surveys contour lines based on 5m height difference. Now could we find the contour line wherever we introduce cutting levels. As for the road design, we had two approaches. One was cutting horizontally at particular level in relation to the adjacent roads. Secondly, for roads connecting different levels, we developed another script to find the shortest splines between two given points at different levels on a given surface.

Fig 2

  

Fig 3

Thanks to this set of scripting tools, we can freely find all the appropriate building platforms at any level and controlled them parametrically (fig 4). For instance, if the height difference between two contour lines is 3m and the gradient is constrained to 30 degree, then the depth of that building platform has to be minimal 5.1m, which further varies according to the functions of that building. The adjustment of different combination of parameters also indicates the control of architectural density in relation to the landscape and public realms. The determination of the height difference between contour lines is the result of balancing land excavation and refill, as well as the visual and daylight impact to buildings at different levels. Even though the design may probably change later for many foreseeable and unforeseeable reasons, this design approach allows us to easily adapt the design content to new conditions without losing the overall quality.


Fig 4


Grow architectural forms

The site is within a minority tribe region called Miao (fig 5). The local government is stringent about any new buildings against the architectural tradition of the minority culture. Design outcomes have to be valid creation based upon existing vernacular styles in addition to coherence to the complex topography.


Based on the exercises for finding appropriate architectural platforms with various evaluation criteria, we studied the syntactic rules of the vernacular architecture of Miao, which is essentially a timber frame structure with double pitched roof and living volumes suspended off grounds. Rather than the singular building style, it is the collective effect by thousands of houses on their best locations and with appropriate orientations that gives a recognizable vernacular style. Understanding this we need to advance the generation process to grow architectural forms out of the architectural platforms.  

First of all, we designed a set of parameters sufficient for generating overall building frames which are essentially governed by pitched roofs. Based upon the outlines of the architectural platforms, we can compute the projection of roof ridge lines and lift them according to the building heights as per FAR. Then several rotating plans are introduced along roof ridges to define the plans where pitched roofs are to be located. The final shape of each pitched roof is the intersection between the inclined roof plans and extrusions of building footprints. Further down the line, the building façade frame can be developed according to the rafter spacing of the roofs (fig 6). All the faces have to be planner shape for not only referring to the traditional styles but also concerning of costs. It appears that the soul of the local vernacular architecture can be inherited as long as the collective roof effect against topography is achieved (fig 7).


Fig 6

Fig 7

Fig 8


In order to differentiate various clusters, e.g. hotels, retail shops, villas and so on, automatically and parametrically, we constructed the syntax of aggregation as per the topography beyond the shape of individual buildings with the parameters including building depth, roof pitching angles, degrees of folding ridge configurations in 3d and so on (fig 8).  

With regards to the museum on the northern slope of the mountains, due to its functions and location, we used different generative strategies inspired by the terrace farmland of Miao. A series of contour lines were smoothened as the spines for the main museum volumes. The gaps between terrace roofs automatically formed high level windows facing north as if fins. The main entrance is under the cantilevered strands stretching out over the west plaza. In contrast, the other end of the building series was buried into the land gradually. With strategic combination of green roofs and metallic cladding systems, the museum was unfolded well into the landscape. (fig 9)


Fig 9


Fig 10
Fig 11


Other meaningful elements on site are Wind & Rain Bridge, an inhabitable bridge with vernacular styles, and Iterative Eave Pagoda, a high structure used for communal gathering and orientations in old days. We examined the traditional syntactic and semantic implications and removed the irrational components on the basis of contemporary materials and building technologies, then extracted the intrinsic merits of these two elements and developed them into parametric systems through scripting and parametric tools like Grasshopper, recreating new outlooks without losing the spirit of those vernacular signs. 

Summarize architectural value

Instead of taking for granted the conventional ways of doing master plan, this project transcends the inertia of 2D planning with a new way of 3d planning, i.e. computing gradients of the site topography for the most appropriate architectural platforms which then generate individual building forms referring to the vernacular styles. We explored a set of techniques for intelligent massing in real time. As a result, no single house is identical and all match the topography perfectly. A series of evolutionary design strategies were also made to further teeth out both buildings in different shapes and in-between public spaces in various scales. The automated and valid customization processes for collective architecture deliver similar quality of being genuine and diversified as the local vernacular architecture, sustainable in both cultural and economic dimensions.    

End  

No exceptionally, this project exhibits our design philosophy to immerse computational techniques (no objection to any tools and not being constrained by any tools) into design processes comprehensively and thoroughly so that concepts, ideas, intentions are celebrated and achieved extensively instead of showing off how advanced we can use those tools. Our goal is neither to focus on the computation itself, but address deeper issues associated with design values in reality for architectural design, urban planning, landscape design and, interior design. The results don’t have to be visually complex, but it must respect the complex context. Computational design, or more popularly known as parametric design in China, is neither the whole asset of design, nor the add-on to design. It should intermingle with team collaboration, creative ideas, thinking processes and, effective presentations. It should be promoted from the technic level to the mental level and become invisible eventually. After all, no clients will interest on how you do it more than what you can deliver.  

Technology cannot simply bring us a beautiful world on its own. We embrace new digital means but not obsessed with them. We are more interested in extending values of design in the increasingly complex realities when everything is connected with everything else. Our aim is to not talking about computational design as it is part of our instinct. In the end, it is the people who drive design decisions instead of ubiquitous computational tools that make a design project different from others. Whatever digital means you choose to use, e.g. scripting, macro or parametric software, they are only one of many ways to do it, but not the purposes of design activities. The significance of implementing digital means, e.g. scripting, is to enhance designers’ abilities of extending design ideas, generating more design possibilities, improving design executions and, the last but not the least, ensuring design qualities. We have passed the decade of testing the limits of these tools. We get used to hearing claiming of pushing design boundaries. We stay calm however the forms scream. What we are envisaging, as these advanced digital means enable us, is the synthesis of innovative ideas, development processes, material & building technologies, project deliveries, intellectual properties, evaluation criteria, sustainable performances, information communication and many others. All in all, we want to make better design decisions.

The power of computation shouldn’t and cannot over run the power of human brain. Human society is far more complex than the digital empire itself. Yes, architecture sometimes needs revolution to leap forward. But, it will eventually become a drop of the evolutional stream. Hence, our future cannot be simply scripted out of computer, but rather benefit from the synergy of processors and human brains.



[i] GAO, Yan
Creative Director, dotA Ltd. Beijing
Assistant Professor, The University of Hong Kong
Director of AA Beijing Visiting School
Design Director, Ocean CN, Hong Kong
M.Arch Architectural Association School in London
B.Arch, Tsinghua University
Chartered Member, Royal Institute of British Architects
ARB Registered Architect

[ii] Project team: Shanghai Tongji Urban Planning & Design Institute in collaboration with dotA Architectural Design Beijing.


Bibliography

1.       Tao Zhu, Experiment Needs Context, New Perspective, vol. 9, Urban Flux, May 2009
2.       Qiang Chang, Ning Duo, Evolutional Planning: Computational Planning and Architectural Design in Mountainous Area, Architecture Technique, 01-02 2011
3.       Patrik Schumacher, The Autopoiesis of Architecture, A New Framework of Architecture, Vol. 1, 2011
4.       Yan Gao, Ning Duo, Synthetic Computational Design, Ubiquitous Computing, Tongji University Press, ISBN 978-7-5608-4394-0, Aug 2010
5.     Robert Venturi, Complexity and Contradiction in Architecture, The Museum of Modern Art, 1977;
  1. Nadin Mihai, Computational Design: Design in the Age of a Knowledge Society, Formdiskurs 1997;
  2. Albert Laszlo Barabasi, Linked - The New Sciences of Networks, Perseus, Cambridge Ma., 2002


[1] GAO, Yan

Creative Director, dotA Ltd. Beijing

Assistant Professor, The University of Hong Kong

Director of AA Beijing Visiting School

Design Director, Ocean CN, Hong Kong

M.Arch Architectural Association School in London

B.Arch, Tsinghua University

Chartered Member, Royal Institute of British Architects

ARB Registered Architect



[1] Project team: Shanghai Tongji Urban Planning & Design Institute in collaboration with dotA Architectural Design Beijing.





Bibliography



1.       Tao Zhu, Experiment Needs Context, New Perspective, vol. 9, Urban Flux, May 2009

2.       Qiang Chang, Ning Duo, Evolutional Planning: Computational Planning and Architectural Design in Mountainous Area, Architecture Technique, 01-02 2011

3.       Patrik Schumacher, The Autopoiesis of Architecture, A New Framework of Architecture, Vol. 1, 2011

4.       Yan Gao, Ning Duo, Synthetic Computational Design, Ubiquitous Computing, Tongji University Press, ISBN 978-7-5608-4394-0, Aug 2010

5.     Robert Venturi, Complexity and Contradiction in Architecture, The Museum of Modern Art, 1977;

  1. Nadin Mihai, Computational Design: Design in the Age of a Knowledge Society, Formdiskurs 1997;
  2. Albert Laszlo Barabasi, Linked - The New Sciences of Networks, Perseus, Cambridge Ma., 2002