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Specific in their use and design, hybrid structures are able to combine different programmes and encourage a variety of urban uses that blend private activities with the public realm. Building on an earlier volume examining the uses and applications of hybrids, this edition brings together a new collection of ten low-rise, mixed use building projects. Unlike vertical hybrids, these horizontal hybrids are able to disguise themselves in the landscape, separate into independent elements and renounce iconic character in favour of invasive qualities. Illustrated throughout with photographs, technical notes and drawings and computerised images, highlights include: Nieto Sobejano’s Neuer Augustinerhof, Nuremberg; OMA’s Bryghusprojektet, Copenhagen; Dominique Perrault’s EWHA Campus Seoul; EM2N’s Toni Areal, Zurich; and Steven Holl Architects’ Vanke Centre in Shenzhen.

a+t:

Following the series Density, In Common and Civilities, we intend to present a new focus on life in common and on buildings that keep up society’s pulse.
At this point, we aim to address our investigation on hybrid buildings, as they are structures able to combine different programmes and encourage the interaction of a disparate sequence of urban uses, combining private activities with the public realm. Furthermore, hybridation goes beyond mixing programs: the term refers as well to the combination of public and private interests in housing, public space and civic facilities and responds to three major concerns of our society:
- The land scarcity and its high value.
- The need of intensifying land use in order to contribute to sustainable development.
- The need of densifying uses in order to revitalise urban centres or, in other words, the urgency to set up devices able to exert a strong centripetal force on their surrounding elements and activities, so that they counteract the effect of the centrifuge force produced by mainly private interests, that incite the city sprawl.

Extract from the article written by Javier Mozas: `Mixed uses. A historial overview', included in a+t 32. Hybrids II. Low-rise Mixed-used Buildings.

Richard Sennett wrote that a cosmopolitan is someone who moves comfortably in diversity, who is at home in situations which are not connected or parallel to what is familiar to him. Just like hybrid buildings. They are cosmopolitan buildings, placed in fragmented forms that do not correspond, in volumes based on remnants of previous mixed typologies, where its body fits with more or less fortune. They produce a new being with a unifying personality. The following paragraphs define the characteristics and personality of hybrids. They are, consciously, absolute maxims, grouped by themes that point out the categorical and defining, so that their personality traits are as noticeable as possible.

Personality
The personality of the hybrid is a celebration of complexity, diversity and variety of programmes. It is the crucible for a mixture of different interdependent activities

The hybrid building is a self-tribute to the individual creation of the architect. Each hybrid is a unique creation, without previous models. The very building comes from an innovative idea, which is resolved against the established combination of usual programmes and bases its reason for existence on the novelty of the approach and the unexpected mixing of functions.

The hybrid is an opportunist building, which takes advantages of its multiple skills. The hybrid building looks for unexpected, unpredictable, intimate relationships, encourages coexistence and is conscious that unprogrammed situations are the keys to its own future.

The hybrid shows its many facets and its own personality. As it depends on the individual nature of its creation process, it can take on multiple representations, even apparently contradictory representations, urban landmark, sculpture, landscape or anonymous volume.

The landmark hybrid is not subject to indifference. It is meant to impact the observer. It does not go unnoticed, but publicly manifests its skills, its extroverted character and its attractive points. The hybrid building as a milestone, is an actor in a starring role on the urban stage.

The anonymous hybrid, on the contrary, requires each part of the programme to lose its originality. If it holds a public programme, what is collective will have to dissolve its character and conform to being another simple secondary actor on the daily stage of the city.

Sociability
The ideal hybrid feeds on the meeting of the private and public spheres. The intimacy of private life and the sociability of public life find anchors of development in the hybrid building.

The permeability of the hybrid makes it accessible from the city and the private use of its services extends its timetable to 24 hours a day. This means that activity is constant and is not controlled by private or public rhythms. Another use category is created, a full-time building.

Form
The Modernism insistence upon correspondence between form and function of a building no longer works. The form-function relationship in a hybrid can be explicit or implicit. The first case leans towards fragmentation, the second towards integration.

A generic hybrid is a building-container that attempts a habitat undifferentiated from the diversity of functions that are grouped inside.

The hybrid building will always fight against those segregationist morphologies that allow the escape from some use and looks to unite, inside their area of influence, all of the activities that can provide life to it.

Typology
The primitive hybrid, or proto-hybrid, has not reached the highest point of integration among its functions and is seen as a set of typologies that have not yet been fused. One cannot classify hybrid buildings by typologies, because in the very essence of the hybrid exists the escape from categories.

The hybrid is the consequence of a rebound with tradition, a two-fingered salute to typology.

Processes
The mixture of uses is a part of the general processes of the hybridation. Property and land development can also be hybrid, by means of a combination of public and private developing. Structure can be hybrid, based on mixed solutions of concrete and steel. Construction can be hybrid with dry assembled elements with wet joints, or the same can be done with prefabrication and traditional assembly methods. Management can be hybrid, with individual and community multi-properties.

Programmes
The mixing of uses in a hybrid building generates a potential which is transferred, as in a system of connected vessels, to those weaker activities so that all involved are benefited. Hybrid buildings are organisms with multiple interconnected programmes, prepared to house both planned activities as well as those unplanned activities in a city.

Density
Dense environments with land use limitations are a good field of cultivation for hybrid situations. The hybrid scheme proposes intense environments of cross fertilisation, which mix known genotypes and create genetic allies to improve living conditions and revitalise their surrounding environments.

Scale
Hybrids have the character of super-buildings, super-blocks, megastructures or of Building-as-a-City. As some of the projects included in this issue suggest, they are “urban monsters of a new and generous breed.”

Hybrids are associated with a certain form of grandeur, splendor and gigantism, because mixing implies size and superposition demands height. The taking over of the surface to extend the programme takes up land. It also needs a creative impulse and economic confidence, since it produces new situations inadequate for times of indecision.

The scale of a hybrid and its relationship with the environment is measured by the juxtaposition of programmatic sections. In vertical hybrids, functions are joined by superposition and in horizontal hybrids, by on-floor additions.

City
Because of its scale, urban composition strategies can be added to a hybrid. The definition of a hybrid includes perspective, grid insertion, dialogue with other urban landmarks and interrelationships with the surrounding public space.

Occasionally, what is hybrid is the urban plan, made up of a series of mono-functional buildings gathered around a common stage, which represents most of the citizen theatrical world.

The hybrid goes beyond the domain of architecture and enters the realm of urban planning.

Extract from the article written by Javier Mozas: `Mixed uses. A historial overview', included in a+t 32. Hybrids II. Low-rise  Mixed-used Buildings

Publikacja wielojęzyczna, w wersjach językowych: - angielskiej - hiszpańskiej

W zestawie lepiej, szybciej, taniej:

W-A.pl proponuje zestaw: A+T 32 HYBRIDS II Low-Rise Mixed-Use Buildings, A+T 31: HYBRIDS I High-Rise Mixed-Use Buildings

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