Can urban greening come to the rescue of life in cities?
The summer of 2022 has sadly left its mark on the history of France. Some people see it as the clear consequences, others hear alarm bells ringing... With an unprecedented drought, repeated dramatic fires and record temperatures, France, like other countries around the world, is overheating! This fact highlights the vital and indeed health-giving role played by urban greening.
“De-gendering” cities: a new criterion of attractiveness?
Cities are made by men and for men: they have historically been planned and designed to reflect the traditional role of the male gender. This is a considerable problem since all genders should have equity in sharing the public space.
Building schools in modular wood
Interview with Marina Da Silva Carvalhais, R&D projects and Wood Construction Innovations (WeWood).
Flax: A fibre of the future for construction?
Resistant, light, efficient, ecological… Flax is used in construction on land and even on the sea! In 2022, the Netherlands inaugurated the world’s first linen bridge. A navigator used it to build the hull of his boat… Can this plant material really meet the needs of urban construction?
Is digitalisation the key to building differently
Attracting talent, mitigating climate change, and improving productivity: These are the construction sector's three main challenges. BIM and various digital tools offer useful solutions, but these are not enough.
What if your sites were supplied via rivers instead of roads?
Faced with the current energy situation, we must urgently find alternative solutions that will enable us to change the ways we produce and transport our materials. Among the solutions considered, one of the priorities – particularly for the industrial sector – is to find means of transport that are more energy-efficient and less harmful to local residents. Focus on river transport.
New challenges in public space
Today, public spaces are facing new challenges – societal, environmental, political, technological and economic – and must deal with the uncertainty of a changing world. How can public spaces be designed to meet the various expectations of society while also being able to adapt to future developments?
Free public transport: issues and positions of the key players in the debate
The issue of free public transport was widely debated in France’s 2020 municipal elections. Its presence on the headlines of many campaign documents demonstrates the political, environmental and societal nature of the issue. Several issues arise from the implementation of such a public policy. We examine the positions of the key stakeholders in the debate.
How do you design green roofs?
Green roofs are on the up and up. And for good reason! They have many environmental, economic and social benefits. In addition to their aesthetic appeal, they can promote biodiversity, improve the insulation of buildings and retain rainwater. Recent research conducted by ecologists is improving our understanding of the conditions under which rooftop vegetation thrives and develops, and assessing the quality of ecosystem services provided by different types of roofs. We consider the factors behind the design choices for such ecosystems.
What kind of governance is appropriate for a convivial city?
At the request of Bouygues Construction and La République des Hyper Voisins, six students from the École Urbaine at Sciences Po Paris worked for nine months on creating conviviality in urban areas. The proposed exploration strategy is to create the conditions for conviviality by introducing a professionally-structured form of citizen action on a micro-local scale. Explore their recommendations for the forms of governance that are most conducive to the emergence of convivial spaces, based on eleven areas of investigation in France and Switzerland.
How do players in US construction innovate?
Interview with Viviane André, an analyst at Winnovation, a Bouygues Group subsidiary.
Should we build higher and higher to fight against land artificialisation?
The fight against urban sprawl and land artificialisation is a national priority that is pushing those in the building sector to look for solutions to make cities denser. One of these solutions is to build ever taller buildings. A controversial issue.
The French Towns Adopting Sustainable Construction Charters
Many towns and cities are looking for a way to remodel their urban planning to give them resilience in the face of climate issues. One such solution is to rally the stakeholders in an area - residents, companies and local authorities - to move towards housing solutions that are innovative, sustainable and accessible to all: that is the cited goal of the ‘sustainable construction charters’ emerging around France.
How much will the ecological transition cost the construction industry?
In the last segment of its sixth activity report, the GIEC specifies very clearly that on the economic level, the ecological transition will prove less expensive for the global economy than if we do nothing. Several sectors are highly exposed to this issue, in particular transport, energy and construction. But acting, how much will it cost? The subject is a complex one but initial estimates are starting to be seen.
Guide to Regreening Cities
Focus on planting initiatives to regreen cities including urban canopies to provide plant life without digging, planters with automatic watering or rainwater harvesting systems, “oasis” schoolyards, and urban mini-forests.
Tackling traffic congestion in cities
Tackling traffic congestion has always been a major challenge for local authorities. Many different approaches have been attempted, including adding lanes, removing lanes and multimodal transport.
Towards a more “ecosystemic” energy performance of buildings
Controlling energy consumption has become an environmental, social and economic necessity, due to the numerous impacts on the biosphere and society as a whole: climate change, depletion of natural resources, deterioration of health, etc.
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Teleworking: less travel, less carbon?
When health conditions required the widespread use of teleworking – wherever possible – in 2020, the sudden drop in travel, especially by car, was obvious to everyone. Some have been quick to conclude that teleworking has a beneficial impact on the environment. But what are the real effects of teleworking on mobility, and as consequence, on the carbon footprint of occupational activities?
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What type of city do we want for our children?
Given that the majority of the world’s population will soon be living in urban areas, it is increasingly necessary to rethink our town planning so that towns and cities more closely reflect the needs and requirements of younger children.
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Robotics and virtual reality used for health and safety
Improving working conditions on sites with a system combining robotics and virtual reality. This is far from a fairy tale - this research and development programme will come into effect in 2020. The aim is to train employees to pick up the right habits, via a process that is both visual and tactile.
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Self-healing concrete
Several research centres around the world are working on proactive self-healing concrete processes, anticipating cracks as early as the design or the placing of the concrete.
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Eco-grazing in the city, a practice that appeals to communities and social housing providers
The end of pesticides in public parks. Since 1 January 2017, in application of the law on energy transition for green growth, local authorities may no longer use plant protection products to maintain parks, roadsides or forests.
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When cities overheat
Urban overheating is becoming a recurring phenomenon, resulting from the cumulative effect of climate change and the Urban Heat Island (UHI) phenomenon. Climate change is leading to an increase in the intensity and duration of heat waves (hot air masses causing high temperatures for several consecutive days) in different parts of the world. These meteorological phenomena themselves reinforce the UHI, a climatic effect causing a difference in temperature between the centre of urban areas and outlying or natural areas, which can be greater than 10 °C during heat waves. The effect is even more pronounced at night, when the heat stored by artificialised land and buildings is released into the air, keeping the temperature high. Faced with the various consequences (social, environmental, economic) and climate projections, local and regional authorities are now faced with the need to adapt their cities in order to combat this phenomenon. Below is an overview of the challenges and solutions.
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[Panorama of Sustainable Cities] #3 Waste management, the keys to Ljubljana’s success
Slovenia’s capital is at the forefront in several areas connected with the environment. In particular, it is recognised for having succeeded where many large cities are struggling: in waste management. We look back at 20 years of good decisions, and a combination of political will and local support.
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Be Issy: a convenient window onto the city
Whether reimagining the tripod shape to move proudly towards the traditional shape of the closed island, stepping back from the street , using curves to provide a maximum of natural light or working with materials to create pleasant, social spaces, the research and design work done here at Be Issy by the architects from PCA Stream is intended to improve the lives of the occupants.
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How can urban metabolism contribute to circular economy policies?
Although cities occupy a mere 2% of the surface of the planet, they consume 75% of its resources, emit between 60% and 80% of anthropogenic greenhouse gases and generate 50% of waste . Cities are a privileged gateway for the entry and exit of a large concentration of flows (food, electricity, cold, heat, fuel, consumer goods, waste, etc.) that enable them to meet the needs of their users: remember that cities today account for 55% of the world population. The study of these flows according to the principles of urban metabolism is a field that is growing in popularity. More and more urban authorities are using it as a basis for defining their circular economy policies.
