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Slow Building Barcelona

The challenge of the project „Slow Building Barcelona“ has been to build an office building that responds to the urban conditions of its location while maximizing, at the same time, the health and sustainability conditions of its habitants. The design of BAILORULL Arquitectura has the ability to incorporate all the criteria of sustainability and health in a building of great aesthetic quality and beauty, with large bright spaces, pleasant and flexible materials. 

It has 8 floors in which, in addition to office space, there are services for common use such as multipurpose rooms, a landscaped and accessible roof on the first floor, dining room and indoor and outdoor spaces for activities related to wellbeing. 

For every 7.2 square meters of indoor office space, Slow users have 1 square meter outdoors. 

In 2014, before the pandemic highlighted the need to guarantee healthy spaces, flexible and adapted to new needs, the promoter Marcove, the consultant H.A.U.S. Healthy Buildings and the BAILORULL Arquitectura studio moved forward to respond to new consumer trends, new professional habits, and attend to global events. 

The building highlights the importance of working in a healthy, comfortable and sustainable environment. For this reason, Slow Building Barcelona, which has the DGNB Gold certificate in Spain, goes beyond the labels and incorporates, in its surface of 15,000 square meters, new elements in sustainable and healthy architectural construction. 

 It has a privileged location, due to its proximity to the city and the airport of Barcelona and its proximity to a train station. 


Pioneer in sustainability systems 

The building has DGNB Certification, which determines the degree of sustainability of the building and some elements of the health chapter; the energy certification A, which measures the energy demand of the building, obtaining the nZEB building consideration. 

The building becomes a reference of the new architecture that places health and sustainability at the center of the project and contributes to achieving, with this, the Sustainable Development Goals of the United Nations. 


The elements of sustainable building 

From the beginning, the project is conditioned by the objective of acting and working on the energy demand, and bringing it to the lowest possible levels. 

Secondly, achieve this thermal and light comfort with high efficiency equipment and systems. And finally try to feed these teams with the highest percentage of energy of non-fossil origin, or renewable energy. 

The materials that make up the Slow has tried to maximize three criteria: the minimization of the life cycle analysis of all the materials incorporated, and this is measured in cubic meters of CO2 emitted seeking to be the least possible throughout the entire life of the building and starting the calculation from the same moment when the extraction and transformation of incorporated materials begins. The second is the minimization of the life cycle cost analysis, it is a similar exercise but instead of CO2 emissions, it measures costs derived from the construction and subsequent use of the building, energy consumption and resources, as well as its maintenance. Finally, the third criterion, the one that mentions health, the non-incorporation of toxicity of any kind or that of elements or factors that could be generators of discomfort. 


About H.A.U.S. Healthy Buildings 

Founded in 2018, HAUS seeks to maximize the health and sustainability indicators of the projects in which it participates, and it does so through consulting and management services. 

The Slow is his second office project, the first in which he participates as a manager, and gives continuity to previous projects in other uses such as the Espai Natura residential project, now in its third phase, the QGAT hotel, under construction, and the renovations HQ1, HQ2, HQ5 and HQ6. 


About BailoRull 

Rosa Rull and Manuel Bailo founded BAILORULL in Barcelona in 1995. 

His work includes a wide variety of project scales, from the urban scale to interior design and industrial design. His projects have been published and awarded nationally and internationally. Some of the most representative examples are: 

Garden House 0.96; Hotel Ciutat Igualada; Manresa Landscape Facade and Scale that was exhibited in the MoMA museum in New York in the exhibition ON Site Spanish Architecture 2006, this project was also the winner of the prestigious international Contractworld Award in Germany 2010. BAILORULL has received the first prize Comercia Space Llaureu in China 2011, as well as the FAD award on two occasions. Recently his Espai Natura project has received the prestigious SARA Award from New York 2021. 

We understand architecture as a constellation formed by the relationship between different types of information. Each piece of data establishes its own intensity and visibility in each project, thus creating a particular and unique constellation. Social and Historical Issues. of Climate Change, Health and Sustainability are all organized through the human scale, the body and its movement in space thus defining, in each project, a unique constellation. 


Heeresbäckerei Kassel

Heeresbäckerei Kassel
The old army bakery, which is part of the Magazinhof business park in Kassel, is being renovated and converted into a modern office building with an old building flair. This building project is being realized by the construction company GOLDBECK Nord GmbH.

The history
In 1939 and 1940, the Magazinhof, including the army bakery, was built as a substitute rations depot. Grain and other important foodstuffs were stored there in three large silos. As part of several construction projects, the 40.000 square meter site in Kassel is now being transformed into a new quarter for urban living and working.

Traditional from the outside…
As the Heeresbäckerei is a listed building, the focus is on preserving its historical appearance. The roof of the building will be covered with slate shingles in the historical style and the windows will be fitted with glazing bars. This preserves the old building flair of the former bakery.

.. progressive on the inside
In contrast to the traditional appearance on the outside, the interior of the original army bakery is being transformed into a modern office complex. Contemporary individual and group offices will be created on three full storeys, providing workspace for around 270 people. The renovation project is scheduled for completion in summer 2024.

Sustainability with a high priority
When planning the renovation project, a special focus was placed on the topic of sustainability. The use of low-emission materials and the energy efficiency of the building were particularly important. The new office building was planned in such a way that the primary energy requirement of the building is 45 percent lower than the energy requirement of the reference building in accordance with the Building Energy Act. A photovoltaic system will be installed on the roof of the building for self-sufficiency in electricity. The project is also aiming for a DGNB Gold certificate.


Institute for the Environment and Sustainability (IES)

The Institute for the Environment and Sustainability (IES) and the Institute for Health and Consumer Protection (IHCP) are located within the Joint Research Center (JRC) site of the European Commission in Ispra (Varese province) in Italy. JRC, Ispra is the biggest European Commission site after Brussels and Luxembourg. It is a multi-store building with a gross overall surface area of approximately 26.000 m2.

The building’s two wings have the same volumes and surface areas. The buildings are labeled as „class A“, which means they have a winter thermal index that is below 30 kWh/m2 per year.

The new building has the capacity to accommodate around 240 employees in both buildings.

The large courtyards have roofs in a metal shed structure with a span of 28m on one side and in a laminated wood structure with a span of 18m on the other. The construction is based on reinforced concrete pillars and brace walls, with prefabricated concrete floors. An overhead metal walkway and a series of underground tunnels connect the two buildings and the other neighboring buildings on the site.

The conceptual design of the building started in 2008. An LCA and LCC evaluation was conducted during the early design stage to assess the buildings‘ ecological and economic performance. The building was completed in 2013.

IES and IHCP were explored during the beta testing phase of Level(s). Our current objective is to increase our understanding by concentrating on the performance of in-use within the Level(s) scheme.

JRC is poised to enhance its sustainability efforts by achieving Level 3 in the future, which involves monitoring and surveying current activities and consequently comparing their impacts on the assessments made in previous stages.

District Z

District Z represents Terra Green Living’s inaugural endeavor, dedicated to constructing Net Zero Whole Life Carbon buildings. Collaborating with 011h, a construction digital platform committed to accelerating sustainable building practices, District Z embodies the mission of promoting eco-friendly development. 

This project will be built in District Z, a new city model designed on new urban paradigms of sustainability and the ‚Smart City‘ concept. ( ) 

Housing designed for people and the planet. 

In addition to the commitment to decarbonisation using technological and certified wood for the structure and other materials, high energy efficiency, water and waste reduction and a commitment to a deconstruction and circular design, the project is designed for all the people who inhabit it, through the creation of accessible spaces and communication both indoors and outdoors. 

Great importance is also given to private open spaces, the connection with nature and visual contact with the outside world from all rooms, controlling privacy, as well as health aspects such as indoor air quality, as well as lighting, thermal and acoustic comfort in all dwellings. 

District Z will comprise 73 dwellings designed to store 1.700 tons of carbon using certified technological wood sourced from Spanish forests. Achieving a 60% reduction in CO2 emissions over its lifecycle, the project also generates 90% of its energy from renewable sources, earning the prestigious AA energy certification for its efficiency. 

Construction time will be notably reduced, approximately by 30%, compared to conventional methods, enhancing overall sustainability. 

The design team. 

In conjunction with Terra Green Living, 011h introduces a digital platform that integrates the Design & Build system, offering comprehensive solutions for construction projects.  

The system based on components made of sustainable materials, compatible with each other, and at a competitive cost it is linked to the digital platform which employs 3D building design with BIM methodology, ready for execution. With a network of integrated partners prefabricating components, construction is streamlined through Lean methodology planning. 

Gesamtschule Wasseramselweg

A new comprehensive school is being built in Cologne-Vogelsang. The six-form entry comprehensive school Wasseramselweg is a joint project of the Cologne-based construction company Friedrich-Wassermann GmbH & Co. KG in co-operation with Goldbeck West GmbH. It will provide a learning centre for over 1,300 children and young people.

The idea of a lively school
The new school campus is to become a living organism, representing a „small city within a city“. To realise this educational and spatial concept, Wasseramselplatz was chosen as the location for the comprehensive school. This choice of location offers the school plenty of space for movement.

The design
Several functional cluster units are lined up along a school street. These learning units were designed as 3-4-storey cubes separated by internal courtyards. A large open space was left in the north of the site. This is used for the pupils‘ sporting activities, but is also intended to be used for breaks. The comprehensive school also has a new multi-sports hall, which was completed in summer 2022.

The design architects
The design idea for the new comprehensive school comes from the architects at Cologne-based v-Architekten. With their imaginative design proposal, they won the multiple commission.

Sustainability a high priority
When planning the Wasseramselweg comprehensive school, a special focus was placed on the topic of sustainability. Both the use of low-emission materials and the energy efficiency of the school complex were important parameters. The comprehensive school was largely designed as a passive house with a heat pump and solar system, giving it an energy efficiency standard of 40 EE. DGNB Platinum certification is also being sought.


Daginstitution Sønder Tranders

The project ‘Daginstitution Sønder Tranders’, entails the new construction of a Kindergarten called ‚Markmusen‘, built for the Municipality of Aalborg in Northern Denmark, which represents a pioneering approach to sustainable childcare architecture. Designed by Krogh Arkitektur, for the client AaK Buildings, the Kindergarten is being built by contractor Arne Andersen Vrå A/S with EKJ Rådgivende Ingeniører as the consulting engineer. Together, they are dedicated to realizing a sustainable and nurturing space for 50 infants in daycare and 100 kindergarten children.

The project is seeking certification through the Danish equivalent of the DGNB system, aiming for DGNB Gold for its commitment to ecological principles and community integration, as well as the special distinction DGNB Heart for its special focus on indoor climate and well-being, and thus sets a high standard for environmentally responsible childcare infrastructure.

The guiding philosophy behind this project emphasizes a deep connection to nature and the utilization of existing surroundings. The goal is to create a nurturing environment that promotes a sense of belonging and fosters learning and openness. Safety, security, and accessibility are paramount, ensuring peace of mind for both children and caregivers.

Architecturally, the Kindergarten seamlessly blends with the natural landscape, aligning its structure with the contours of the land. This not only enhances visual harmony but also facilitates intuitive navigation for occupants. Additionally, careful planning separates pedestrian and vehicular traffic, ensuring a tranquil arrival experience.

In summary, the Daginstitution in Sønder Tranders exemplifies the transformative potential of sustainable design in the realm of childcare architecture. It serves as a beacon of innovation and environmental stewardship, providing a blueprint for future projects aimed at enhancing both community well-being and ecological integrity.



Mærsk Mc-Kinney Møller Institute (University of Southern Denmark)

The expansion of the Mærsk Mc-Kinney Møller Institute (MMMI) at the University of Southern Denmark (SDU) represents a significant stride towards creating an innovative hub for technological advancement. The project aims to enrich the academic landscape with state-of-the-art facilities and sustainable design principles.

Located in Odense, aspiring to become the world’s foremost hub for robotics, the new Dreamlab at SDU marks a pivotal step towards realizing this vision. The MMMI, renowned for its research in robotics, AI, and drones, has undergone a remarkable transformation with the addition of a striking new building designed to inspire future inventors.

The construction, supervised by the Danish Building Authority, entails a 4,500 m² extension in four floors, featuring workshops, laboratories, offices, meeting rooms, group spaces, and communal areas. Situated to facilitate physical connectivity with surrounding buildings, the extension enhances accessibility within the Technical Faculty, fostering synergy with related environments. The project is a collaboration with lead engineer EKJ Rådgivende Ingeniører, Cubo Arkitekter, the project’s lead architect, Kristine Jensen Tegnestue, responsible for landscape planning, and Etos Ingeniører. Under the guidance of EKJ the project is seeking DGNB Gold certification emphasizing its sustainability and environmental responsibility.

The new building, seamlessly integrated with the university’s technical faculty, is connected to the existing institute and the rest of SDU via footbridges and an underground tunnel. At its core lies a creative space open all the way to the roof, providing students with ample room to work on their projects. Complementing this expansive project area are laboratories and group rooms designed as transparent glass boxes, fostering visual connectivity and collaboration.

With accommodation for 500 students and 100 staff, the new facility promises to be a unique learning environment. The building’s design prioritizes acoustics and sound insulation to ensure that diverse activities can coexist harmoniously.

The expansion of MMMI is generously supported by the A.P. Møller Foundation, reflecting a commitment to advancing educational and research initiatives. SDU’s vision for additional space aims to accommodate the growing influx of students and the expanding research and educational environment at the existing institute.

In summary, the expansion of the Mærsk Mc-Kinney Møller Institute exemplifies a harmonious blend of architectural innovation, sustainability, and educational advancement. Positioned at the forefront of technological research, the new facilities promise to nurture the next generation of innovators, bridging theory with practice in a dynamic learning environment.


Alphagon Office

Alphagon Office Building, a new IT Hub, nestled in the centre of Budapest stands as a testament to progressive design and environmental consciousness. With 4669 square meters of leasable space spread across its ground floor and five upper levels, complemented by underground parking on level -2, this small-sized office building redefines modern workspace standards.

Crafted by an esteemed award-winning studio in collaboration with the renowned TuC team, this building embodies a visionary approach to urban development. Rooted in two fundamental pillars—certification and sustainability—every aspect of its design reflects a commitment to excellence.

Embracing the ÖGNI/DGNB guidelines, the journey towards certification excellence was guided by architects with unparalleled expertise in LEED and BREEAM standards. Under the leadership of chief architect Mr. Andras Reith, a stalwart advocate for sustainability, this building emerges as a beacon of environmental stewardship.

From the commencement of construction in June 2019 to its timely completion in December 2020, meticulous attention was paid to every detail, ensuring a seamless blend of functionality and aesthetics. Welcoming its inaugural tenant in February 2021, Alphagon sets a new benchmark for contemporary workspace environments.

Alphagon goes beyond conventional sustainability practices, pioneering innovative solutions to reduce environmental impact. Through concrete core activation for heating and cooling, optimal thermal comfort year-round is ensured, while minimizing direct air flow from traditional A/C systems.

In the builders pursuit of sustainability, they prioritize local producers, sourcing materials like prefabricated panels from Hungary. Recognized for their dedication to environmental responsibility, Alphagon proudly holds an EU Taxonomy certificate, obtained through rigorous study and collaboration.

Looking towards the future, Alphagon is poised to further elevate its sustainability efforts with the imminent installation of a solar panel system on the southern facade. Expected to cover 25% of our electricity demand, this initiative underscores our unwavering commitment to a greener tomorrow.

Discover a workspace that transcends boundaries at Alphagon, where innovation and sustainability converge to redefine the possibilities of modern office environments. Join us in shaping a brighter, more sustainable future for generations to come.



Van der Nüll Gasse

Circular refurbishment in practice: a Wilhelminian-style building in Vienna ’s Favoriten district becomes a pilot project

Van der Nüll Gasse 22 – an existing property owned by Sedlak Immobilien – is to be refurbished and the construction company DI Wilhelm Sedlak GmbH is determined: „We want to implement what everyone has been talking about for some time and start the practical test.“ For the first time, a building is being refurbished to be recyclable in accordance with the EU taxonomy, taking into account the technical assessment criteria published as a delegated act by the European Commission in June 2023. The focus is on solutions that are as economical and scalable as possible and can be implemented at moderate cost.
The building in question is a Wilhelminian style building from 1885 that has been renovated several times. There is nothing left of the classic façade from this period; from the outside, it is more reminiscent of a building from the 1960s. According to an initial study, new apartments and offices are to be built here on a gross floor area of 1,650 m², part of which will be created through redensification in the form of three storeys in the loft conversion. The project was launched in June 2023, construction is scheduled to start in early 2025 and be completed in early 2026.

What does circular construction actually mean?

„A prerequisite for the realization of taxonomy-compliant renovation is the fulfillment of the criteria of one of the six environmental goals without causing significant damage to one of the other goals at the same time. The environmental goal „transition to a circular economy“ is of immense importance for the construction industry in particular, as the construction industry consumes more than a third of the world’s resources and the potential savings are correspondingly high,“ explains Simone Grassauer, Managing Director of SCALE Umweltberatung GmbH, which is supporting the project.

In concrete terms, circular construction and renovation means Extending the useful life of the building – through planning that includes conversion options and guarantees ease of use, as well as using materials and technologies with a long service life and dispensing with primary raw materials in favor of secondary raw materials – i.e. reusing what is already there or using recycled materials, and reducing waste during construction that cannot be recycled. In addition, a dismantling concept for the end of the building’s useful life must be considered at the planning stage. A life cycle assessment must be drawn up for the building over its entire service life from the start of renovation. And the materials used in the building should be able to be reused at some point, for which a digital building resource passport is required as a material database – so that it is also visible what and where,

And how exactly do you prove that the building has actually been refurbished to be circular?

Margarete Berl, project manager at Sedlak Immobilien, knows: „Level(s) is an approach developed by the EU to verify and assess the sustainability of a building over its entire life cycle, not to be confused with building certification. The EU taxonomy also refers to this in the technical criteria for the environmental objective ‚transition to a circular economy'“.

The process is supported by new software from SCALE, which can be used to simulate the environmental impact of the building depending on the materials used – a BIM-based building model is a prerequisite for creating the life cycle assessment and enables greenhouse gas emissions and other environmental indicators such as primary energy requirements or acidification potential to be optimized during the planning phase by comparing different building materials in the model.

„A precise survey of the existing building and subsequent potential analysis are essential for successful planning. We – the client, planners, structural engineers, building physicists and builders – are in close contact; the much-cited integral planning is a reality here,“ explains Margarete Berl. It is exciting and challenging to take the step towards circular construction and requires new, creative, open-minded thinking in sometimes unfamiliar ways. From today’s perspective, there is no way around it, as the available raw materials are dwindling worldwide.

The progress of the project can be followed on a BLOG on the website of DI Wilhelm Sedlak GmbH.

Further information:

Headquaters Containex

The office building „Headquaters Containex“ along the A2 highway marks the next milestone in the development of the WALTER GROUP. It impresses with its hexagonal shape and large window areas.

The first floor has a transparent design, while the six upper floors contain office spaces. The roof houses technical facilities and a green area with photovoltaics for optimum energy efficiency.
The façade is horizontally structured and equipped with fixed sun protection slats. The building offers a flexible division of office space thanks to the minimal use of load-bearing structures and the arrangement of columns mainly in the façade area.
In addition to the foyer with co-working zones, the first floor also houses back offices and sanitary facilities. An extended co-working area, meeting rooms and a canteen are accessible via access controls.
The building is accessed via two interlinked stairwells and three elevator systems. The office floors offer conference rooms and central meeting zones with a room height of 3 meters and heated/chilled ceilings.
When designing the building, great importance was attached to flexibility, resource conservation and energy efficiency. The WALTER GROUP is thus investing in a modern and flexible working environment in order to create the best working conditions in the long term.