God’s ski jump

Building design
Embedded in the adjacent greenery: a sustainable ecological surface protection concept protects the natural stone façade from graffiti and contamination and prevents chemicals from entering the natural area. Photo: Rufus 64 / Wikicommons

Embedded in the adjacent greenery: a sustainable ecological surface protection concept protects the natural stone façade from graffiti and contamination and prevents chemicals from entering the natural area. Photo: Rufus 64 / Wikicommons

Churches are not often built these days, but that is not the only unusual thing about the expressionist-looking new building in Munich’s suburbs. In addition to ceramic tiles, local Nagelfluh was also used. The solid natural stone had to be prepared for different interior and exterior requirements. Rupert Mayer was a Jesuit priest who, among other things, was part of the Catholic resistance […].

Churches are not often built these days, but that is not the only unusual thing about the expressionist-looking new building in Munich’s suburbs. In addition to ceramic tiles, local Nagelfluh was also used. The solid natural stone had to be prepared for different interior and exterior requirements.

Rupert Mayer was a Jesuit priest who was part of the Catholic resistance in Munich against National Socialism and was beatified in 1987. The apostle of Munich, as he is also known, is the patron saint of the gleaming white and light-flooded new church building, which was erected between 2015 and 2018 in the municipality of Poing, an eastern suburb of the Bavarian capital. The special shape of the Seliger-Pater-Rupert-Mayer-Kirche not only impressed the Association of German Architects, which awarded the building one of Germany’s most important architecture prizes, the Great Nike, but also the local population. While the Baumeisters had a crystalline form in mind when designing the solitaire – in the sense of a free-standing building that stands out from the surrounding buildings – the congregation is reminded of winter sports. They affectionately call their new church “God’s ski jump”.

15,000 ceramic tiles cover the 30 by 30 meter high polygonal roof construction and make it shine in the right light. The 3D ceramic tiles were produced and glazed by hand by m&r Manufaktur from Ransbach-Baumbach using slip casting, a mold casting process from traditional porcelain production, according to a design by the architectural firm. As a contrast to the delicate shapes of the tiles, the solid plinth area of the façade as well as the wall plinth and the floor area in the interior of the church are made entirely of polished Brannenburger Nagelfluh from the Upper Bavarian gravel plain by Grad Nagelfluhwerk GmbH & Co KG.

Nagelfluh is a conglomerate rock that contains rounded rock fragments of various origins. Rock fragments from the central Alps were displaced by mountain streams into the Alpine foothills, where they were deposited and filled and solidified by the overlying pressure of younger sediments and lime precipitated from the groundwater. Due to the high proportion of binder, the natural stone has a homogeneous overall appearance despite the different rock inclusions. The time of formation can be dated to the Pleistocene, making Nagelfluh a rather young rock. The open and clearly visible pores are typical of its appearance. The Brannenburg Nagelfluh originates from a Nagelfluh massif in the region of the same name, which formed during the Würm Ice Age. The rock has been quarried there since the 10th century. In southern Germany, Nagelfluh can be seen in many buildings, for example the front of the building and the large portal of the Ludwig Maximilian University in Munich or the foundations of the Frauenkirche in Munich and the Old Technical Town Hall in Munich. Less common is its use in new buildings, such as the Seliger-Pater-Rupert-Mayer-Kirche in Poing.

The nine-centimetre thick facing brickwork made of solid Nagelfluh was to be protected against graffiti in particular, but also against other environmental influences. Due to the typical structure of the natural stone, the absorption capacity of the substrate varies. When removing dirt and paint, residues could remain on the unprotected façade.
The choice fell on the prophylactic surface and graffiti protection PSS 20 from PSS Interservice GmbH. The protection system met the specifications of the client, the Catholic Church Foundation of St. Michael: the barely visible coating is completely reversible and its formulation based on polysaccharides and carbohydrates – i.e. sugar and potato starch – met the requirements for environmental friendliness. “It is a purely plant-based product without any chemical carrier,” assures Bernd Pfennig, the PSS Interservice consultant responsible for protective coating measures on sacred buildings, “which is why it is also popular with monument conservation authorities.” PSS 20 forms a wafer-thin film on the surface of the Nagelfluh and protects against graffiti as well as general soiling such as splash water, de-icing salts and dog urine. “Natural stone has a capillary system; impurities easily penetrate the stone through the open pores and change the appearance of the surface. The porosity of natural stone is therefore the actual cause of soiling, and this is where specific surface protection systems can help,” explains the expert. The natural stone façade nevertheless remains completely open to the diffusion of water vapor; the little moisture that penetrates can be immediately released again via the vapor phase.

Read more in STEIN 8/2019.

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“Daily use is the best protection” Philipp Speiser has been restoring in Egypt for many years. He is an honorary professor at the TU Berlin and director of the project “The Fatimid Cemetery in Aswan”, which was successfully completed in 2014 and in which a sector of the necropolis was documented and restored. Archaeological sites are being looted in Egypt – how are they currently being […]


Foto: A. Paasch

“Daily use is the best protection”

Philipp Speiser has been restoring in Egypt for many years. He is an honorary professor at the TU Berlin and director of the project “The Fatimid Cemetery in Aswan”, which was successfully completed in 2014 and in which a sector of the necropolis was documented and restored.

Archaeological sites are being looted in Egypt – what are the current conditions for restoration in the country?

I can only speak for our project. I think restoration and looting have little to do with each other, except that places that are being worked on are better supervised during the work on site. The conditions for restoration are the same as before the revolution.

You have been restoring in Egypt since the 1980s. What has changed for you and your work since the revolution in spring 2011?

Nothing has changed for us since the revolution, as the German Archaeological Institute (DAI) still maintains excellent contacts with the Egyptian antiquities administration. We have the same Egyptian partners and local staff as before the revolution.


Foto: A. Paasch

To what extent was the Fatimid Cemetery the target of looting?

On the one hand, the cemetery is naturally used regularly and is considered a sacred place that is respected as such. There is therefore constant supervision by the users, and its daily use is the best protection.

Secondly, there are no antiquities or finds that can be sold for profit.


Foto: W. Meyer

In your opinion, how can the archaeological sites in Egypt be protected from looters?

Only through an appropriate presence of guards and wardens and a greater awareness among the population of the archaeological heritage and its importance. For this reason, the DAI has launched several educational programs for cultural preservation in Egypt. It is to be hoped that economic stabilization and the growth of tourism, particularly in the Nile Valley, and the resulting financial improvement will reduce looting.

Spatial Planning Matters! – Book review

Building design
Spatial-Planning-Matters Cover © vdf Hochschulverlag AG an der ETH Zürich

Spatial-Planning-Matters Cover © vdf Hochschulverlag AG an der ETH Zürich

Scientists at ETH Zurich have published an anthology on the planning process. It contains both practical examples and theoretical essays. And is a must for students.

Planning is mysterious. With increasing complexity, the process of a project becomes more decisive than the physical intervention. Whose voices are drowned out, what role do planners play in this process? Scientists at ETH Zurich organized a series of seminars on these questions with international scientists and practitioners from the planning world. The 232-page book documents the research results.

How to avoid planning errors

The publication has an exemplary structure and consists of two main parts: “Inspiring stories” and “Fundamental topics”. The first part presents seven completed and nine ongoing projects that demonstrate a variety of challenges and approaches to planning practice in Europe and the USA.

The essays on the “fundamental themes” discuss issues and innovative strategies. They should be considered in the various phases of the planning process. For example, the essay “Planning approaches or nothing comes from nothing” mentions that problem analysis at the beginning of planning is crucial and should not be ignored. The lack of a broad discussion of the problems was, for example, one reason for planning errors in the Stuttgart 21 project.

Focus on social aspects

The structure of the book fulfills its purpose of bridging the gap between practice and theory and reaching a broad audience outside specialist circles. The content of the publication is innovative and scientifically sound. It has a clear and concise structure, cross-references between examples and theory, an informative but restrained layout. The clear structure helps people with different backgrounds to better understand the planning process. Professionals can better understand innovative theories and the connection between theory and practice thanks to the example-oriented structure, the notes and the glossary.

Non-experts can rely on the detailed narratives and rich diagrams in the example chapters to understand key planning processes. However, the book’s perspective on planning focuses on social aspects. It leaves open how nature can be included as an important stakeholder in planning and how the process should change to adapt to climate challenges, for example.

A must-read for planning students

Furthermore, the examples focus on Europe, with a brief mention of the United States. Some non-European planning projects would be quite interesting for research and discussion. The European examples are sufficient for new insights, but exploring more projects in different contexts and developing theories, regardless of success or failure, would make the planning mechanism and theory more robust and universal.

This book is not a substitute for a comprehensive planning textbook, but it is innovative: a must-read for planning students who have mastered the theory but have little practical experience. It is also recommended for planners, politicians and others who are constantly looking for more efficient ways of planning.

The text was written in the “scientific writing workshop landscape architecture” at the TUM Chair of Landscape Architecture and Transformation with Prof. Udo Weilacher. As part of the seminar, students select specialist literature and work together on individual book reviews.

What value do undefined spaces have in a city? Dorothee Rummel poses this question in her dissertation “Undetermined spaces in cities: The value of residual space”.