The Master Class on plastic-OPACITY from August 19 till August 27 was the pinnacle of the Concrete Design Competition 2006/07. All national winners of the competition received as part of their awards an invitation to participate in the Master Class. And while in that sense it was the end of the biannual competition cycle it was also a separate investigation of the theme: plastic-OPACITY. This theme was adapted by the participants themselves during the competition; their entries were expressions of their individual interpretations of the notions on plastic-OPACITY set in motion by curator Hanif Kara. National juries, each within their individual realm of expertise and interpretation, selected the invitees to the Master Class, and from this point onwards the curator’s involvement became most visible and prominent.

The Master Class did not seek to continue on the directions implied by the winning competition entries. It was organised as a continuation of a wide-ranging exploration, activating its own medium as a master class. This meant expert support – technical as well as intellectual -, the actual production of objects and foremost an extremely intensive period of teamwork. Teamwork in which the mix of cultures, differences in education – architecture, art, landscape design, engineering -, age and languages were maximised through a sheer explosion of energy and perseverance.

Before the 45 participants from 8 countries started the intense 6-day program at the Bauhaus Foundation in Dessau, they got together for a two-day excursion to Berlin. During this introduction there was ample time to get acquainted in between and during organised tours through the city. Besides amazing architecture and remarkable examples of concrete buildings and objects, a historical notion of Berlin was presented through the expertise of art:berlin guides.

Hanif Kara’s intentions for the Master Class were quite straightforward, though challenging and wide-ranging. The scheme, worked out in close collaboration with his colleague Adiam Sertzu, was to produce a wide variety of concrete objects. Through the process of research, design and production, a series of major architectural issues, techniques and top-of-the-line materials would be explored. Working in eight groups, formed to generate an equal spread of expertise, the participants focused on various sized objects, from partial details to a 3 x 3 x 3 meter object. They dealt with producing their results at various scales, from 1:100 to 1:1. And were asked to address a range of architectural interactions relating to the human body, the landscape, interior, structural integration, and so on. Each group was presented with an assignment accompanied by a series of images. The assignments introduced the specific focus for the groups in an open and challenging fashion. Sometimes with just a few words or a set of short sentences to indicate the path of exploration. Each assignment was only really limited by the prescribed sizes of objects to produce, the type of concrete to be used and of course a set of non-negotiable deadlines; or so we thought.

The true spirit of a master class comes to surface through a seemingly hectic and definitely intense and well-supported program. The six-day schedule was jammed with lectures, critics, presentations, ample time for discussions, and featuring an apparently endless line-up of support staff. It involved our hosts from the Bauhaus Foundation and the FH Anhalt, Omar Akbar and Stephan Pinkau. Their staff worked fulltime manning the wood and concrete workshops and offering audio-visual and computer support. We had the pleasure to welcome the more ‘hit-and-run’ appearances of lectors doubling as critics invited by Hanif Kara: Bjarke Ingels, Ciro Najle, Stephan Engelsmann and Akihisa Hirata. They offered a full and balanced input for the development and realisation of the participant’s ideas together with the support from experts from Schwenk Zement KG, PERI GmbH, Adams Kara Taylor and various organizing cement and concrete associations. Not to forget the essential contributions of a score of individual experts appearing as critics and tutors. 

It was especially the work involved to realise the ideas and the unrelenting determination of the students that countered both the programmed as well as the unforeseen challenges. Dilemmas originated from enthusiastic ambitions, limited time frames, and ‘state of the art’ techniques and materials, meeting down to earth applications. It was the atmosphere of improvisation together with conditions of intense collaboration and focus on results that led to an overwhelming outcome. We have the objects, beautiful ones exploring the visual and tactile qualities of concrete. We were introduced to innovative techniques not seen in architectural applications before. Furthermore, investigations have started probing the limits of formwork techniques, concrete mixtures and pouring methods. However, none of the objects could have been achieved without the teamwork, and direct collaboration between designers, engineers and industry; a first time experience for most of the participants. This type of collaboration is seen by many contemporary professionals as the most promising format for innovative design practice. The direct communication between all partners in a design and production process offers a dynamic platform with which constructive criticism as well as early testing can be achieved. The most significant impact was exactly this type of process, the interactive cross-disciplinary development from assignment to results. Starting with refining ideas, managing them through selection procedures and finally mastering the handicrafts involved in working with concrete. Each group presents their processes, ideas and objectives in a separate part of this publication through their own stories. And it was these processes, for all participants as well as for the staff of the Concrete Design Master Class on plastic-OPACITY, which made the encounter unforgettable and rich in emotion and experiences.

The Master Class offered an intense and full platform for investigating the overall theme of the competition cycle. A collaborative platform that would be drastically different from conditions encountered when individually developing a competition entry. In activating its own setting and momentum it triggered a plastic-OPACITY of ecology, of spatial experiences and of structural applications; surpassing the expectations of the initiators. The seriousness in which the preliminary hunches were developed into proposals and objects lays claim to a fertile foundation for renewed potential and properties of concrete.

Siebe Bakker