The Winners of the 2020 German Natural Stone Award

Building design

The German Natural Stone Association (DNV) and the Association of German Architects (BDA) are honoring sustainable projects featuring natural stone in both interior and exterior settings for the 19th time. An overview of the winners.

Schwabing
Winner of the 2020 German Natural Stone Award and the Residential Buildings category: Schwabinger Carré II. Photo: Florian Holzherr-Gauting
BBR (Bundesamt für Bauwesen und Raumordnung)
Winner in the Public Buildings category: the German Embassy in Paris. Photo: Jerome Epaillard
Humboldtforum
Winner in the “Solid Stone Elements” category: the facade of the Berlin Palace. Photo: Stephan Falk
Privatanwesen
Winner of the Landscape Architecture and Open Space Design category: the garden of a private estate in Hesse. Photo: Annette Barnett-Rastenberg

Schwabinger Carré II Wins the German Natural Stone Award

Participants submitted a total of 66 projects to the architecture competition. The jury nominated 17 of them. In addition to the 2020 German Natural Stone Award, there are three category winners.

The award categories are:
– Public and Commercial Buildings
– Residential Buildings
– Solid Stone Elements and Renovation
– Landscaping and Open Space Design

In addition to the “Grand Prize,” the Munich project also won in the Residential Buildings category. In this project, two new buildings complement the existing structures from the 1970s. A distinctive feature is the recessed attics.

The jury explained: “Despite its liveliness, Schleißheimer Straße is not among the city’s top attractions. That is precisely the focus of the selected project: How can a new building sustainably improve the urban space? Even within the dense structure of the block development, before the street leaves the city center, the architectural firm Meili, Peter has set a remarkable example. It demonstrates how a sustainable enhancement of public space could be achieved. The corner building is characterized by a generous, three-dimensionally structured natural stone façade. Small loggias alternate with large window openings. The shell limestone, a “Grigio Alpi,” appears at times as thin pilaster strips or linear parapet elements, and at other times as expansive surfaces, lending the building the necessary sense of weight. The natural stone, which is pleasantly light in color yet does not appear cold, has been skillfully incorporated into the architectural design, making the building truly special.”

More photos, renderings, and information about the project are available on the architects’ website.

German Embassy Office Building Wins in the Public Buildings Category

The architectural firm Baumewerd is responsible for the facade redesign and comprehensive renovation of the German Embassy in Paris. The firm has a “proficiency in embassy projects” and has, among other things, collaborated on the German diplomatic missions in Madrid and Santiago de Chile. St. Maximin Ferme Fine, a light yellow limestone, is used on the facade in Paris. The flooring is made of Jura limestone.

The jury explained: “With the old German Embassy building in Paris, constructed in the early 1960s, the Federal Republic of Germany presented itself with a sober, functional structure. At that time, a facade featuring cornices and half-columns made of natural stone would have been unthinkable. Fifty years later, not only have the technical requirements changed, but so too have the design standards. On the one hand, the challenge was to address these new standards with a new facade. And on the other, the question of how the image of the Federal Republic could be reflected in the architecture. The result is neither a simple homage to historicism nor a reconstruction of sleek postwar modernism. A beautiful example of the use of natural stone: neither old-fashioned nor unconditionally modern.”

The winner in the “Solid Stone Elements” category is the facade of the Humboldt Forum

The Franco Stella Humboldt Forum Project Consortium wins with its reconstruction of the palace façade. The consortium includes the firm Hilmer & Sattler and Albrecht, Franco Stella—the winner of the architectural competition—and Baumanagement Berlin. The facade consists of sandstone from Cotta, Posta, Reinhardtsdorf, Wartha, and Königgrätz.

The jury explained:“For most advocates of modernism, reconstructions were tantamount to a distortion of history. It was not until the reconstruction of the Frauenkirche in Dresden that reconstruction gained widespread public acceptance. Regardless of the experts’ debate, every architectural reconstruction poses an enormous challenge to planners, contractors, and building owners. Given the effort involved, the precision of the execution, and the impact of the Berlin Palace’s spacious façade, the academic debate pales in comparison to the craftsmanship on display. The new exterior wall, rebuilt according to historical documents, is a magnificent example of sustainability. In terms of architectural evaluation, aesthetic sustainability takes precedence. It does not matter when the design was created, but rather the material and design quality it possesses.”

The Humboldt Forum’s website features numerous additional images and information about the reconstruction.

Redesigned Private Estate Wins in the Landscape Architecture and Open Space Design Category

The garden serves as the unifying element of a private estate in Reichelsheim, southern Hesse. The landscape architects Backhaus & Barnett used Kohlplatter shell limestone there.

The jury explained:“The design of the outdoor space effectively addresses the complexity of the property. The structure and access follow a rational underlying concept. Particularly appealing is the way the topography of the site—which slopes partially toward the south—is handled. The individual spaces are harmoniously organized yet each develops its own character. The consistent use of Kohlplattler Muschelkalk supports this approach. It is used for paving and slab flooring, retaining walls and stairs, and even seating and water features. This lends the garden a soothing, tranquil, and timeless atmosphere. Particularly noteworthy are the material-appropriate use of the formats and the quality of the surfaces.”

The German Natural Stone Award is endowed with 15,000 euros, with each category receiving 5,000 euros. The award ceremony itself will take place at Stonetec 2021.

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Autonomous construction site ecosystems: machines talk to machines

Building design
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Remote-controlled LEGO MINDSTORM EV3 car on a green course, photographed by Hung Nguyen Phi.

Construction sites without people, but with intelligence: machines that talk to each other, coordinate and make decisions independently. What sounds like a dystopian nightmare for site managers or a wet dream for construction equipment manufacturers has long been a reality in autonomous construction site ecosystems – at least on a pilot scale. But where do Germany, Austria and Switzerland stand on the road to the machine-machine construction site? And what do architects, engineers and clients need to be prepared for in this new world?

  • Autonomous construction site ecosystems are revolutionizing planning, construction and operation – through networked, self-learning machines and digital process chains.
  • Machines communicate with each other, coordinate work processes and react flexibly to changes – in real time.
  • Germany, Austria and Switzerland are still hesitant to test, while international pioneers have long been building productively.
  • Digitalization, AI and IoT are driving this change – and demanding new technical skills from all players.
  • The sustainability of the construction site is being put to the test: less waste, more resource efficiency, but also new risks.
  • Autonomous construction sites are radically changing work profiles, responsibilities and the way the construction industry sees itself.
  • Lots of potential, but also criticism: data protection, loss of control, legal gray areas and technocratic dependency.
  • Global impulses from Asia, Scandinavia and North America show how it can work – and what is still missing here in Germany.
  • The future of construction will not be decided at the site fence, but in the digital ecosystem. Those who don’t jump on board now will get stuck in the mud.

Autonomous construction sites: From vision to machine reality

The idea is as simple as it is revolutionary: what if excavators, cranes, loaders and trucks no longer had to communicate laboriously by radio or hand signals on the construction site, but could communicate directly with each other? If algorithms not only controlled individual processes, but orchestrated the entire construction site ecosystem? Welcome to the age of autonomous construction, in which humans – at least on paper – are increasingly degraded to supervisors and the actual events are determined by machines, sensors and data streams. In Japan and the USA, fleets of self-driving construction machines are already rolling along test tracks, while drones coordinate construction site logistics and AI systems adjust material deliveries in real time. The construction site as a symbiotic network of robotics, artificial intelligence and big data that optimizes and repairs itself is no longer fiction, but the ambitious present.

Germany, Austria and Switzerland? Here, the image of the site manager with a walkie-talkie and a daily schedule still dominates. Although there are initial pilot projects – for example on large construction sites for infrastructure or industry – the reality of construction sites is characterized by isolated solutions, fragmented system landscapes and a healthy dose of scepticism about losing control. Between the pressure to innovate, regulatory hurdles and the notoriously conservative construction industry, progress is slow but steady. The call for efficiency and precision, for less construction time and material waste, is getting louder – and the answer is unmistakably digital.

However, the real leap is not in the automated individual device, but in networking: machines talk to machines, exchange process data, report faults, synchronize movements and coordinate with each other as if they were a well-rehearsed team. AI-supported platforms constantly analyze sensor data, weather forecasts, supply chains and construction progress and dynamically adapt the processes. The goal: a construction site that regulates itself like an organism and only requires minimal human intervention.

But the road to this goal is rocky. A central problem is the lack of standardization: every manufacturer cooks their own soup, interfaces are rarely open and compatibility remains wishful thinking. What’s more, construction sites are complex, unstructured environments in which imponderables are the order of the day. Machines that want to survive here autonomously not only need robust hardware, but also a good dose of artificial intelligence – and an ecosystem that not only tolerates errors, but also learns from them.

The big question remains: How much autonomy can the construction site tolerate before humans finally become spectators? And is that even worth striving for? The debate has begun – and it is not only a technical one, but also a political, ethical and economic one. One thing is certain: the next generation of the construction site is not an evolutionary step, but a tectonic shift that is calling the industry’s self-image into question.

Digitalization and artificial intelligence: the new pacemaker on the construction site

Anyone who still believes that construction sites are the last analog place in an increasingly digital world has not taken the latest wave of innovation into account. Sensor technology, cloud computing, IoT platforms and AI algorithms have long since arrived on construction sites – at least where the courage to transform is greater than the fear of losing control. Machines are becoming data producers, their movements, loads, downtimes and maintenance requirements monitored and analyzed in real time. The aim is to minimize sources of error, reduce downtime and make optimum use of resources.

At the heart of this is the communicative intelligence of the machines: an autonomous excavator knows when the truck will arrive and adjusts its excavation accordingly. The roller uses sensors to detect whether the subsoil is compacted enough – and automatically reports the need for improvements. Drones map the construction progress and provide the central control system with the database for precise time and material planning. AI-based platforms orchestrate the interaction of all players, identify bottlenecks, optimize processes and suggest alternatives – without the need for constant human intervention.

In Germany and its neighboring countries, however, this is mostly happening in the form of pilot projects by large construction companies or in research collaborations with universities. Widespread use is still in its infancy, not least due to a lack of infrastructure, a lack of willingness to invest and regulatory uncertainties. Other countries are further ahead: in Scandinavia, tunnel construction sites are already being monitored completely digitally, in Asia, smart cities are experimenting with AI-controlled construction processes and in the USA, the industry is testing autonomous construction machinery fleets on major projects – with considerable efficiency gains.

The key to success lies in interoperability. The autonomous ecosystem can only function if data is exchanged in open standards, if machines from different manufacturers “speak the same language”. In addition to technical openness, this also requires legal clarity: who owns the generated data? Who is liable in the event of damage? And how can we prevent the construction site from becoming a black box without human control?

Architects, engineers and clients need to develop a basic technical understanding of digital process chains. Without knowledge of data management, AI and automated workflows, you are left out in the cold – or become a vicarious agent of the machines. The construction site of the future demands digital sovereignty and a new job description that sees man and machine not as opposites, but as symbiotic partners.

Sustainability: between resource efficiency and digital footprint

Autonomous construction site ecosystems not only promise efficiency and precision, but also a real sustainability boost for the construction industry. Machines that optimize themselves reduce idle times, avoid material waste and minimize energy consumption. Sensors measure the actual resource requirements and AI dynamically adjusts order quantities and delivery intervals. This results in construction sites that are not only faster, but also cleaner, quieter and more resource-efficient – at least in theory.

But the reality is more complex. Digitalization itself consumes energy and resources: server farms, network infrastructure and the production of smart machines have their own carbon footprint, which is often underestimated. There is also a risk that constant optimization will merely translate new efficiency gains into even more construction volume – the well-known rebound phenomenon. Sustainability therefore requires more than just technological innovations, but a fundamentally new understanding of construction processes, life cycle management and value creation.

Germany, Austria and Switzerland like to position themselves as pioneers when it comes to sustainability, but implementation on the construction site often remains piecemeal. While sustainable building materials and the circular economy are invoked in theory, in practice there is often a lack of digital tools to make material flows transparent or to measure the actual consumption of resources. Autonomous construction sites could change this – provided they are programmed not only for efficiency but also for sustainability.

Another problem is the disposal and recycling of digital components. Sensors, electronics and smart control systems are often shorter-lived than conventional components and pose new challenges for dismantling and recycling. What’s more, the more data is collected, the greater the need for data protection and data security – not least with regard to sensitive project data, location information and trade secrets.

The autonomous construction site ecosystem is therefore faced with the task of understanding sustainability as an integral component and not as a downstream fig leaf. The way to achieve this is through open standards, transparent processes and a consistent life cycle approach – from planning to dismantling. Those who play a leading role here can not only build green, but also take on digital responsibility.

New roles, old fears: what remains of the architectural profession?

What will happen to the profession of architect when machines take over the construction site? Will the planner become a data manager, the engineer an AI whisperer and the site manager the supervisor of a fleet of robots? The autonomous construction site is not only shaking up processes, but also self-perceptions. Where experience, gut instinct and a talent for improvisation used to count, today data competence, algorithmic thinking and system understanding are required. Anyone who resists this risks marginalizing themselves.

But the fear of the machine as a job killer is just as old as the steam engine. In fact, tasks and responsibilities are shifting: Architects are becoming process architects who not only design spaces, but also digital processes. Engineers are no longer just developing supporting structures, but also interfaces between man and machine. And the construction manager is becoming the conductor of an orchestra of robots, sensors and data streams.

The biggest challenges are not to be found in the technology, but in the culture. The construction industry is traditionally hierarchical, based on a division of labor and not very innovative. Autonomous construction sites require a rethink: cooperation instead of silo thinking, openness to mistakes and a willingness to learn continuously. Those who embrace the new roles can not only shape digitalization, but also have a say in it – and stay in the game instead of ending up on the bench.

Of course, there is also resistance: data protection, liability issues, loss of control and concerns about job losses are real fears that need to be addressed. Politicians, professional associations and companies alike are called upon to create binding framework conditions and promote further training. Only in this way can the transition to an autonomous construction site succeed without leaving people behind.

It has long been clear in the global discourse that the future of construction will be digital, networked and autonomous. Those who build up the right skills now and seek dialog with technology will not be replaced, but will remain designers in the machine age. The construction site of the future doesn’t need machine stormers, but courageous architects who help shape change.

Between vision and reality: global trends and local skid marks

Looking beyond the horizon, it is clear that autonomous construction sites are no longer a niche topic internationally. In China, entire city districts are being built with the help of robot-assisted construction processes, in Scandinavia, infrastructure projects are being orchestrated by AI platforms, and in the USA, tech giants are relying on self-learning construction site logistics. Germany, Austria and Switzerland, on the other hand, are moving at a snail’s pace – for fear of losing control, regulatory constraints and the famous German perfectionism.

Innovations often come from outside: start-ups from Silicon Valley, Asian machine builders and Scandinavian software companies are driving development forward, while the domestic construction industry mainly relies on pilot projects and isolated solutions. There is a risk of losing touch with the international leaders if the courage to standardize, be open and cooperate is not finally shown. The construction site of the future knows no national borders – data flows, algorithms and machine logic are global.

At the same time, there are considerable opportunities in the DACH countries: a high level of engineering expertise, a dense network of research institutions and a lively architecture scene offer the best conditions for developing your own solutions. However, the prerequisite is a move away from pure technology fetishism towards holistic ecosystems that focus on sustainability, openness and human-machine interaction.

The biggest construction sites are currently still in our heads: there is a lack of trust in technology, a lack of a clear legal framework and a lack of a shared vision for the construction of tomorrow. However, those who take the leap into the autonomous ecosystem now can not only increase their own efficiency, but also set international trends. The construction site of the future is not a place for procrastinators, but for pioneers.

The debate about autonomous construction sites is therefore much more than a technical gimmick. It is an expression of an epochal change that is fundamentally transforming the construction industry, its players and its values. Anyone who sleeps through this development will eventually wake up on a construction site where no one is waiting for them.

Conclusion: The construction site is talking – and we should listen

Autonomous construction site ecosystems are not a distant dream, but the logical consequence of digitalization, efficiency pressure and sustainability requirements. Machines that talk to each other work more precisely, faster and more resource-efficiently – if we do it right. Germany, Austria and Switzerland are still in the early stages, but change is inevitable. The future of construction will be shaped by data, algorithms and intelligent systems. Those who pay attention now, learn and help shape the future will remain relevant – those who slow down will be overrun. The language of the construction site is digital. Time to understand it.