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This is the 22st episode of a series 25 building blocks to create better streets, neighbourhoods, and cities. Its topic is the way how the quality of the living environment benefits from reducing the contrast between urban and rural areas.

Photos from space show a sharp contrast between city and countryside. Urban areas are predominantly gray; rural areas turn green, yellow, and brown, but sharp contrasts are also visible within cities between densely built-up neighborhoods and parks. Even between neighborhoods there are sometimes sharp transitions.

The division between city and country

Large and medium-sized cities on the one hand and rural areas on the other are worlds apart in many respects and local government in municipalities would like to keep it that way. For a balanced development of urban and rural areas, it is much better if mutual cohesion is emphasized, that their development takes place from a single spatial vision and (administrative) organization and that there are smooth transitions between both. The biggest mistake one can made is regarding the contrast between city and country as a contradiction between city and nature. Where large-scale agriculture predominates in the rural area, the remaining nature has a hard time. Where nature-inclusive construction takes place in cities, biodiversity is visibly increasing.
The idea that urban and rural areas should interpenetrate each other is not new. At the time, in Amsterdam it was decided to retain several wedges and to build garden villages. Some of the images in the above collage show such smooth transitions between urban and rural areas: Eko Park, Sweden (top right), Abuja, Nigeria (bottom left), and Xion'an, China (bottom center). The latter two are designs by SOM, an international urban design agency that focuses on biophilic designs.

Pulling nature into the city

Marian Stuiver is program leader Green Cities of Wageningen Environmental Research at WUR. In her just-released book The Symbiotic City, she describes the need to re-embed cities in soil, water and living organisms. An interesting example is a design by two of her students, Piels and Çiftçi, for the urban expansion of Lelystad. The surrounding nature continues into the built-up area: soil and existing waterways are leading; buildings have been adapted accordingly. Passages for animals run between and under the houses (see photo collage, top left). Others speak of rewilding. In this context, there is no objection to a small part of the countryside being given a residential destination. Nature benefits!

Restoration of the rural area

The threat to nature does not come from urban expansion in the first place, but mainly from the expansion of the agricultural area. Don't just think immediately of the clearing of tropical rain woods to produce palm oil. About half of the Dutch land area is intended for cows. Usually, most of them are stabled and the land is mainly used to produce animal feed.
The development of large-scale industrialized agriculture has led to the disappearance of most small landscape features, one of the causes of declining biodiversity. Part of the Climate Agreement on 28 June 2019 was the intention  to draw up the Aanvalsplan landschapselementen . Many over-fertilized meadows and fields that are intended to produce animal feed in the Netherlands were once valuable nature reserves. Today they value from a biodiversity point of view is restricted and they are a source of greenhouse gases. Nature restoration is therefore not primarily focusses at increasing the wooded area. Most of the land can continue to be used for agricultural and livestock farming, provided that it is operated in a nature-inclusive manner. The number of farmers will then increase rather than decrease.

Pulling the city into nature

There are no objections against densification of the city as long this respects the green area within the city. So-called vertical forests by no means make up for the loss of greenery. Moreover, space is needed for urban agriculture and horticulture (photo collage, top center), offices, crafts, and clean industry as part of the pursuit of complete districts. Nature in the Netherlands benefits if one to two percent of the land that is currently used to produce animal feed is used for housing, embedded in a green-blue infrastructure. Some expansion and densification also apply to villages, which as a result are once again developing support for the facilities, they saw disappearing in recent decades.
Finally, I mentioned earlier that nature is more than water, soils, plants, and trees. Biophilic architects also draw nature into the built environment by incorporating analogies with natural forms into the design and using natural processes for cooling and healthy air. The 'Zandkasteel' in Amsterdam is still an iconic example (photo collage, bottom right).
 
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This is the 21th episode of a series 25 building blocks to create better streets, neighbourhoods, and cities. Its topic is the combination of living and working in the same neighbourhood. This idea is currently high on the agenda of many city councils.  

Benefits for the quality of the living environment

If there is also employment in or near the place where people live, several residents might walk to work. That will only apply to relatively few people, but urban planners think that bringing living and working closer together will also increase the liveliness of the neighborhood. But more reasons are mentioned: including cross-fertilization, sharing of spaces, the shared use of infrastructure (over time), a greater sense of security and less crime. Whether all these reasons are substantiated is doubtful.
In any case, mixed neighbourhoods contributes to widening the range of residential environments and there is certainly a group that finds this an attractive idea. The illustrations above show places were living and work will be mixed (clockwise): Deventer (Havenkwartier), The Hague (Blinckhorst), Leiden (Bioscience Park), Amersfoort (Oliemolenterrein), Amsterdam (Ravel) and Hilversum (Wybertjesfabriek).  

Break with the past

Le Corbusier detested the geographical nearness of work and living. In his vision, all the daily necessities of residents of the vertical villages he had in mind had to be close to home, but the distance to work locations could not be great enough. Incidentally, very understandable because of the polluting nature of the industry in the first half of the 20th century. Nowadays, the latter is less valid. An estimated 30% of companies located on industrial sites have no negative environmental impact whatsoever. A location in a residential area therefore does not have to encounter any objections. The choice for an industrial site was mainly dictated because the land there is much cheaper. And that's where the shoe pinches. The most important reason to look for housing locations on industrial estates is the scarcity of residential locations within the municipality and consequently their high prices. Moreover, in recent decades the surface of industrial estates has grown faster than that of residential locations, at least until a couple of years ago.  

Companies are still hesitating

Companies are generally reserved about the development of housing in their immediate vicinity. Apart from the realistic expectation that the price of land will rise, they fear that this will be at the expense of space that they think they will need to grow in the future. This fear is justified: In the Netherlands 4600 hectares of potential commercial sites disappeared between 2016 and 2021. Another concern is that future 'neighbors' will protest against the 'nuisance' that is inherent to industrial sites, among others because of the traffic they attract. The degree of 'nuisance' will mainly depend on the scale on which the mixing will take place. If this happens at block level, the risk is higher than in case of the establishment of residential neighborhoods in a commercial environment. But as said, there is no need to fear substantial nuisance from offices, laboratories, call centers and the like. Companies also see the advantages of mixing living and working, such as more security.  

Searching for attractive combinations of living and working

Project developers see demand for mixed-use spaces rising and so do prices, which is an incentive for the construction of compact multifunctional buildings, in which functions are combined. To create sufficient space for business activity in the future, they advocate reserving 30% for business space in all residential locations. The municipality of Rotterdam counters this with a 'no net loss' policy regarding gross floor surface for commercial spaces.
Gradually, attractive examples of mixed living and working areas emerge. Park More (from Thomas More), the entrance area of the Leiden Bioscience Park, which will consist of homes, university facilities and a hotel (photo top right). The idea is that in the future there will also be room for the storage of rainwater, the cultivation of food and the production of the estate's own energy.
Another example, which can probably be followed in more places, is the transformation of the Havenkwartier Deventer into a mixed residential and working area, although part of the commercial activity has left and the buildings are being repurposed as industrial heritage (photo above left). The starting point is that, despite hundreds of new homes, the area will retain its industrial and commercial character, although some residents complain about the 'smoothening' of the area'. Living and working remains a challenging combination, partly depending on where the emphasis lies. In this respect, many eyes are focused on the substantiation of the plans of Amsterdam Havenstad.
 
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Ik heb de laatste jaren honderden posts geschreven over stedelijke ontwikkeling, innovatie en organisatie. Vele daarvan hebben op deze website gestaan. Ik verschuif mijn schrijfactiviteiten geleidelijk naar het thema waarvan mijn hart sneller gaat kloppen, namelijk muziek.  In mijn nieuwe Nederlandstalige blog 'Expeditie muziek' (zie de link hieronder) verken ik wekelijk een ander facet.  Deze week is dat de geschiedenis van de blues, vorige week heb ik een top tien samengesteld van de in mijn ogen mooiste Nederlandstalige liedjes 'ooit'. Neem eens een kijkje.

This is the 20th episode of a series 25 building blocks to create better streets, neighbourhoods, and cities. Its topic is to enable citizens having daily necessities in a walking and bicycling distance.

During the pandemic, lockdowns prevented people from leaving their homes or moving over a longer distance. Many citizens rediscovered their own neighbourhood. They visited the parks every day, the turnover of the local shops increased, and commuters suddenly had much more time. Despite all the concerns, the pandemic contributed to a revival of a village-like sociability.

Revival of the ‘whole neighbourhood’

Revival indeed, because until the 1960s, most residents of cities in Europe, the US, Canada, and Australia did not know better than their dally needs were available within a few minutes' walk. In the street where I was born, there were four butchers, four bakers, three greengrocers and four groceries, even though the street was not much longer than 500 meters. No single shop survived. My primary school was also on that street, and you had to be around the corner for the doctor. This type of quality of life went lost, in the USA in particular. However, urban planners never have forgotten this idea. In many cities, the pandemic has turned these memories into attainable goals, albeit still far removed from reality. Nevertheless, the idea of the 'whole neighborhood' gained traction in many cities. It fits into a more comprehensive planning concept, the 15-minute city.

Support for facilities

The idea is that residents can find all daily needs within an imaginary circle with an area of approximately 50 hectares. This implies a proportionate number of residents. A lower limit of 150 residents per hectare is often mentioned, considering a floor area of 40% for offices and small industry. The idea is further that most streets are car-free and provide plenty of opportunity for play and meeting.

Opportunity for social contacts

In a 'whole neighbourhood', residents find opportunity for shopping and meeting from morning to evening. There is a supermarket, a bakery, a butcher, a greengrocer's shop, a drugstore, a handful of cafes and restaurants, a fitness center, a primary school, a medical center, craft workshops, offices, green spaces and a wide variety of houses. Here, people who work at home drink their morning coffee, employees meet colleagues and freelancers work at a café table during the quiet hours. Housemen and women do their daily shopping or work out in the gym, have a chat, and drink a cup of tea. People meet for lunch, dinner and socializing on the terrace or in the cafes, until closing time. A good example is the Oostpoort in Amsterdam, albeit one of the larger ones with a station and a few tram lines.

Planning model

On the map above, the boundaries of the neighborhoods with an area of approximately 50 hectares are shown in the form of circles. The circular neighborhood is a model. This principle can already play a role on the drawing board in new neighborhoods to be built. In existing neighbourhoods, drawing circles is mainly a matter of considering local data. The center of the circle will then often be placed where there are already some shops. Shops outside the intended central area can be helped to move to this area. Spaces between existing homes can be reserved for small-scale businesses, schools, small parks, communal gardens and play facilities. Once the contours have been established, densification can be implemented by choosing housing designs that align to the character of the neighbourhood. Towards the outside of the imaginary circle, the building density will decrease, except at public transport stops or where circles border the water, often an ideal place for higher buildings.

If a thoroughfare passes through the center of the circle, this street can be developed into a city street, including a public transport route. Facilities are then realized around a small square in the center of the circle and the surrounding streets.
Incidentally, space between the circles can be used for through traffic, parks, and facilities that transcend districts, for instance a swimming pool or a sports hall or an underground parking garage. Mostly, neighborhoods will merge seamlessly into each other.
It will take time before this dream comes true.
 
 
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This is the 19th episode of a series 25 building blocks to create better streets, neighbourhoods, and cities. This post is about increasing the independent mobility of children and the elderly, which is limited due to the dangers that traffic entails.

For safety reasons, most urban children under the age of ten are taken to school. The same goes for most other destinations nearby. It hampers children’s independent mobility, which is important for their development.

Car-free routes for pedestrians and cyclists

For security reasons, car-free connections between homes and schools, community centers, bus stops and other facilities are mandatory (photo’s top left and bottom right). Car routes, in their turn, head to neighborhood parking spaces or underground parking garages. Except for a limited number of parking spaces for disabled people.

Design rules

Model-wise, the design of a residential area consists of quadrants of approximately 200 x 200 meters in which connections are primarily intended for pedestrians and cyclists. There are routes for motorized traffic between the quadrants and there are parking facilities and bus stops at the edges. Inhabitants might decide that cars may enter the pedestrian area at walking pace to load and unload to disappear immediately afterwards. The routes for pedestrians and cyclists connect directly with the shops and other destinations in the neighborhood, based on the idea of the 15-minute city. Shops 'ideally' serve 9 to 16 quadrants. In practice, this mode will have many variations because of terrain characteristics, building types and aesthetic considerations.

Examples

The number of neighborhoods where cars can only park on the outskirts is growing. A classic example is 'ecological paradise' Vauban were 50 'Baugruppen' (housing cooperatives) have provided affordable housing (photo bottom middle ). Car-free too is the former site of the Gemeentelijk waterleidingbedrijf municipal water supply company in Amsterdam - (photo bottom left). Here almost all homes have a garden, roof terrace or spacious balcony. The Merwede district in Utrecht (top middle) will have 12,000 inhabitants and for only 30% room for parking is available, and even then only on the edge of the district. Shared cars, on the other hand, will be widely available. The space between the houses is intended for pedestrians, cyclists and children playing.

More emphasis on collective green

Due to the separation of traffic types and the absence of nuisance caused by car, there are no obligatory streets, but wide foot- and cycle paths. Instead there are large lawns for playing and picnicking, vegetable gardens and playgrounds. Further space savings will be achieved by limiting the depth of the front and back gardens. Instead, large collective space appears between the residential blocks; remember the Rivierenwijk in Utrecht that I mentioned in the former post (top right). Behind the buildings, there is room for small backyards, storage sheds and possibly parking space.
 
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When thinking about the decarbonization of cities, Local Energy Systems (LES) are often mentioned as one of the key enablers in the future. While there is agreement that LES have a role to play in the energy system of the future, what exactly is this role and how do we scale up implementation of this solution?

Cities are a major source of GHG emissions, with UN estimates suggesting that cities are responsible for ~75% of global emissions, mainly by means of transport and energy use in buildings. The decarbonization of buildings within urban areas can prove especially difficult, as space is limited, issues like grid congestion delay further electrification and there are a lot of stakeholders involved.

LES can be a solution in the decarbonisation of buildings in urban areas, like residential spaces, business parks and hybrid areas, creating positive energy districts that simultaneously reduce their impact on the grid.  Preliminary LES pilot programs indicate that a LES can support decarbonization by integrating renewable generation and efficiently using energy by decreasing energy losses due to smart grids, communal energy management systems and by combining generation and use as locally as possible. We are however still in the early stages of building and growing LES around the globe, which is why we are focused on getting the right stakeholders together and learning about the requirements for scaling up such systems.

## Case & Set-up of the Session

During the latest Transition Day we hosted a work session on the topic of LES. In the past months, a number of partners in the Amsterdam Smart City network have expressed interest in the topic and would like to work together on the topic. Simultaneously the HvA, who is working on the ATELIER project with the aim to create Positive Energy Districts (PEDs), developed a framework to structurally categorize the various aspects involved in implemeting a LES. During the Demo Day, we considered two topics related to LES The first was a the framework created by the HvA, with the intention of capturing feedback and validating the approach.  Secondly, we considered how we can move from an informal network around LES, to a structural coalition that can scale up the concept.

## Insights

A framework for structurally capturing aspects of a LES

Omar Shafqat from the HvA / ATELIer project presented their framework for structurally capturing and monitoring aspects of LES. The framework categorizes various aspects into policy, market, technical and social considerations (from top to bottom). Next to that, it divides these aspects on a timeline along a planning horizon from longer term (planning) to shorter term (management). The framework is shown below in this image.

In response to the framework, the participants shared some the following feedback:
-        Testing the framework is necessary to validate and improve it. This implies an inventorization of LES projects and working through a few specific cases to check how the framework can be applied, and how it can benefit project managers/owners.
-        The framework should also be presented and validated by other key stakeholders such as Amsterdam’s “Task Force Congestion Management”.
-        Participants raised the question of who exactly will use the framework, and how? Is this intended as an instrument to be used primarily by academics, and researchers, or also by practitioners?

Forming a coalition on the advancement of LES

The second part of the work session was moderated by Joost Schouten from Royal Haskoning DHV, who led the discussion on the need for building a coalition around LES. He argued that the further development of LES requires an ecosystem approach, since multiple parties with different interests are involved, but there is no clear ‘owner’ of the problem.

A ‘coalition of the willing’ could help to advance the development of LES. A discussion in breakouts led to the following insights:
-        A coalition should be formed by the community itself, but it requires a party that coordinates during the kick-off phase. A discussion emerged around whose role should be to take on the coordination phase. Some participants were of the view that this should be led by a governmental party, others thought this should be organised by a network party like Amsterdam Smart City.
-        To effectively build a coalition, the involved parties need to be interdependent. To make sure that it is clear that the parties in a LES are interdependent, the parties need to state their interests in developing a LES, to determine whether there is a common goal.
-        Even when these interests are not fully aligned, communication between parties can help bridge gaps. Discussion leads to understanding and empathy.
-        An ambassador can be a vital enabler in the beginning of building a coalition, as a clear face and point of contact for such a group.
-        There are already many other communities and coalitions working on topics related to LES, including but not limited to 02025, New Amsterdam Climate platform, TET-ORAM, TopSector Energie, among others.  A key question is whether a new coalition is necessary, or whether it should be possible to join forces with an existing coalition / initiative.

## Conclusions and next steps

Many work session participants indicated support and interest to further contribute to the development of the LES project. The HvA framework was viewed as a useful tool to capture learnings from LES projects to facilitate scaling up. Additionally, the question of how to facilitate collaboration and coalition forming requires further attention. There are many parties involved in the development of LES, and they don’t always have the same interests. However, this is not an issue that any party can ‘own’ or ‘solve’ on its own. It requires an ecosystem approach, which is something that will need to be further detailed.

For now, we will simultaneously work on further building the coalition and looking for LES projects that can be used to test and further develop the framework. If you would like to know more or get involved in the project, for example by contributing you own LES to be tested by the framework itself, let me know via noor@amsterdamsmartycity.com.

This challenge was introduced in the Amsterdam Smart City network by Lennart Zwols from gemeente Amsterdam and Omar Shafqat (HvA). The session was prepared with and moderated by Joost Schouten from Royal HaskoningDHV. Do you have any questions or input for us? Contact me via noor@amsterdamsmartcity.com or leave a comment below. Would you like to know more about the LES challenge? You can find the overview of the challenge with the reports of all the sessions here.

This is the 18th episode of a series 25 building blocks to create better streets, neighbourhoods, and cities. This message is about the limited possibilities for children to play in a green environment because of the sacrifices that are made to offer space for cars and private gardens
 
Almost all residential areas in the Netherlands offer too little opportunity for children to play. This post deals with this topic and also with changing the classic street pattern to make way for routes for pedestrians and cyclists.
Everything previously mentioned about the value of a green space applies to the living environment. The rule 3 : 30 : 300 is often used as an ideal: Three trees must be visible from every house, the canopy cover of the neighborhood is 30% and within an average distance of 300 meters there is a quarter of a hectare of green space, whether or not divided over a number of smaller parcels.

Functions of 'green' in neighbourhoods

The green space in the living environment must be more than a grass cover. Instead, it creates a park-like environment where people meet, it is accompanied by water features and can store water in case of superfluent rain, it limits the temperature and forms the basis for play areas for children.

Legally, communal, and private green areas are different entities; in practice, hybrid forms are becoming common. For example, a communal (inner) garden that can be closed off in the evening or public green that is cadastral property of the residents but intended for public use. In that case the residents live in a park-like environment which they might maintain and use together. Het Rivierdistrict in Utrecht is an example of this.

Play at the neighborhood level

Children want wide sidewalks and a place (at least 20 x 10 m2) close to home that is suitable for (fantasy) games and where there may also be attractive play equipment. The importance of playground equipment should not be overestimated. For many children, the ideal playground consists of heaps of coarse sand, water, climbing trees and pallets. To the local residents It undoubtedly looks messier than a field full of seesaw chickens. Good playground equipment is of course safe and encourages creative action. They can also be used for more than one purpose. You can climb on it, slide off it, play hide and seek and more. Of the simple devices, (saucer) swings and climbing frames are favorites.
A somewhat larger playground to play football and practice other sports is highly regarded. Such a space attracts many children from the surrounding streets and leads to the children playing with each other in varying combinations.

Squares

Most squares are large bare plains, which you prefer to walk around. Every neighborhood should have a square of considerable size as a place where various forms of play and exercise are concentrated. In the middle there is room for a multifunctional space - tastefully tiled or equipped with (artificial) grass - for ball games, events, music performances, markets and possibly movable benches. Ideally, the central part is somewhat lower, so that there is a slope to sit on, climb and slide down. On the edge there is room for countless activities, such as different forms of ball games, a rough part, with climbing trees, meeting places, spaces to hide, space to barbecue and walls to paint, but also catering and one or more terraces. Lighting is desirable in the evening, possibly (coloured) mood lighting. There is an opportunity for unexpected and unforeseen activities, such as a food car that comes by regularly, street musicians that come to visit, changing fairground attractions and a salsa band that comes to rehearse every week.
Such a square can possibly be integrated into a park that, apart from its value as a green space, already offers opportunities for children to play. Adding explicit game elements makes parks even more attractive.

Connecting car-free routes

Safe walking and cycling routes connect playgrounds, parks, and homes. They offer excellent opportunities to use bicycles, especially where they are connected to those of other neighbourhoods.
By seeing facilities for different age groups in conjunction, networks and nodes are created for distinctive target groups. The children's network mainly includes play areas close to home, connected via safe paths to playgrounds in the vicinity. Facilities especially for teenagers are best located somewhat secluded, but not isolated. Essentially, they want to fit in. The teenage network also includes places where there is something to eat, but also various facilities for sports and at a certain age it includes the entire municipality.
 
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This is the 17th episode of a series 25 building blocks to create better streets, neighbourhoods, and cities. This post is about the contributions of sociability and inclusivity to the quality of the living environment.
Almost everyone who is going to move looks forward with some trepidation to who the neighbors will be. This post is about similarities and differences between residents as the basis for a sociable end inclusive neighborhood.

"Our kind of people"

The question 'what do you hope your neighbors are' is often answered spontaneously with 'our kind of people'. There is a practical side to this: a family with children hopes for a family with playmates of about the same age. But also, that the neighbors are not too noisy, that they are in for a pleasant contact or for making practical arrangements, bearing in mind the principle 'a good neighbor is better than a distant friend'. A person with poor understanding often interprets 'our kind of people' as people with the same income, religion, ethnic or cultural background. That doesn't have to be the case. On the other hand, nothing is wrong if people with similar identities seeking each other's proximity on a small scale.

All kinds of people

A certain homogeneity among the immediate neighbours, say those in the same building block, can go hand in hand with a greater variety at the neighbourhood level in terms of lifestyle, ethnic or cultural background, age, and capacity. This variety is a prerequisite for the growth of inclusiveness. Not everyone will interact with everyone, but diversity in ideas, interests and capacities can come in handy when organizing joint activities at neighborhood and district level.

Variation in living and living arrangements

The presence of a variety in lifestyles and living arrangements can be inspiring. For example, cohousing projects sometimes have facilities such as a fitness center or a restaurant that are accessible to other residents in the neighbourhood. The same applies to a cohabitation project for the elderly. But it is also conceivable that there is a project in the area for assisted living for (former) drug addicts or former homeless people. The Actieagenda Wonen “Samen werken aan goed wonen” (2021) provides examples of the new mantra 'the inclusive neighbourhood'. It is a hopeful story in a dossier in which misery predominates. The Majella Wonen project in Utrecht appealed to me: Two post-war apartment complexes have been converted into a place where former homeless people and 'regular' tenants have developed a close-knit community. It benefits everyone if the residents of these types of projects are accepted in the neighborhood and invited to participate.

Consultation between neighbours

It remains important that residents as early as possible discuss agreements about how the shared part of life can be made as pleasant as possible. This is best done through varying combinations of informal neighborhood representatives who discuss current affairs with their immediate neighbours. A Whatsapp group is indispensable.
Mixing income groups is also desirable, especially if the differences in housing and garden size are not too great. It does not work if the impression of a kind of 'gold coast' is created.
If functions are mixed and there are also offices and other forms of activity in a neighborhood, it is desirable that employees also integrate. This will almost happen automatically if there is a community center with catering.
Most of what is mentioned above, cannot be planned, but a dose of goodwill on the part of all those involved contributes to the best quality of living together.
 
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The construction sector is projected to exceed its carbon budget by 2026 using current construction practices.

But by constructing half of new residential buildings with bio-based materials, we can actually reduce CO2 emissions by 18% by 2030. That’s according to Metabolic's latest research, made possible through funding from Built by Nature. And if we consider carbon sequestration, we can even reduce the impact of the residential construction sector by 52%.

However, if solely focusing on carbon, we must be mindful not to shift the burden to other planetary boundaries. In our research, we discuss topics such as sustainable wood supply, climate change risks, and land use change. Based on our findings, we propose six steps to consider to realize a sustainable biobased construction sector.

#timberconstruction #biobased #forests #climatechange

This is the 16th episode of a series 25 building blocks to create better streets, neighbourhoods, and cities. This post is about one of the most important contributions to the quality of the living environment, a pleasant (family)home.

It is generally assumed that parents with children prefer a single-family home. New construction of this kind of dwelling units in urban areas will be limited due to the scarcity of land. Moreover, there are potentially enough ground-access homes in the Netherlands. Hundreds of thousands have been built in recent decades, while families with children, for whom this type of housing was intended, only use 25% of the available housing stock. In addition, many ground-access homes will become available in the coming years, if the elderly can move on to more suitable housing.

The stacked house of your dreams

It is expected that urban buildings will mainly be built in stacks. Stacked living in higher densities than is currently the case can contribute to the preservation of green space and create economic support for facilities at neighbourhood level. In view of the differing wishes of those who will be using stacked housing, a wide variation of the range is necessary. The main question that arises is what does a stacked house look like that is also attractive for families with children?
Area developer BPD (Bouwfonds Property Development) studied the housing needs of urban families based on desk research, surveys and group discussions with parents and children who already live in the city and formulated guidelines for the design of 'child-friendly' homes based on this.
Another source of ideas for attractive stacked construction was the competition to design the most child-friendly apartment in Rotterdam. The winning design would be realized. An analysis of the entries shows that flexible floor plans stand head and shoulders above other wishes. This wish was mentioned no less than 104×. Other remarkably common wishes are collective outdoor space [68×], each child their own place/play area [55×], bicycle shed [43×], roof garden [40×], vertical street [28×], peace and privacy [27× ], extra storage space [26×], excess [22×] and a spacious entrance [17×].

Flexible layout

One of the most expressed wishes is a flexible layout. Family circumstances change regularly and then residents want to be able to 'translate' to the layout without having to move. That is why a fixed 'wet unit' is often provided and wall and door systems as well as floor coverings are movable. It even happens that non-load-bearing partition walls between apartments can be moved.

Phased transition from public to private space

One of the objections to stacked living is the presence of anonymous spaces, such as galleries, stairwells, storerooms, and elevators. Sometimes children use these as a play area for lack of anything better. To put an end to this kind of no man's land, clusters of 10 – 15 residential units with a shared stairwell are created. This solution appeals to what Oscar Newman calls a defensible space, which mainly concerns social control, surveillance, territoriality, image, management, and sense of ownership. These 'neighborhoods' then form a transition zone between the own apartment, the rest of the building and the outside world, in which the residents feel familiar. Adults indicate that the use of shared cars should also be organized in these types of clusters.

Variation

Once, as the housing market becomes less overburdened, home seekers will have more options. These relate to the nature of the house (ground floor or stacked) and - related thereto - the price, the location (central or more peripheral) and the nature of the apartment itself. But also, on the presence of communal facilities in general and for children in particular.
Many families with children prefer that their neighbors are in the same phase of life and that the children are of a similar age. In addition, they prefer an apartment on the ground floor or lower floors that preferably consists of two floors.

Communal facilities

Communal facilities vary in nature and size. Such facilities contain much more than a stairwell, lift and bicycle storage. This includes washing and drying rooms, hobby rooms, opportunities for indoor and outdoor play, including a football cage on the roof and inner gardens. Houses intended for cohousing will also have a communal lounge area and even a catering facility.
However, the communal facilities lead to a considerable increase in costs. That is why motivated resident groups are looking for other solutions.

Building collectively or cooperatively

The need for new buildings will increasingly be met by cooperative or collective construction. Many municipalities encourage this, but these are complicated processes, the result of which is usually a home that better meets the needs at a relatively low price and where people have got to know the co-residents well in advance.
With cooperative construction, the intended residents own the entire building and rent a housing unit, which also makes this form of housing accessible to lower incomes. With collective building, there is an association of owners, and everyone owns their own apartment.

Indoor and outdoor space for each residential unit

Apartments must have sufficient indoor and outdoor space. The size of the interior space will differ depending on price, location and need and the nature of the shared facilities. If the latter are limited, it is usually assumed that 40 - 60 m2 for a single-person household, 60 - 100 m2 for two persons and 80 - 120 m2 for a three-person household. For each resident more about 15 to 20 m2 extra. Children over 8 have their own space. In addition, more and more requirements are being set for the presence, size, and safety of a balcony, preferably (partly) covered. The smallest children must be able to play there, and the family must be able to use it as a dining area. There must also be some protection against the wind.
Residents of family apartments also want their apartment to have a spacious hall, which can also be used as a play area, plenty of storage space and good sound insulation.

'The Babylon' in Rotterdam

De Babel is the winning entry of the competition mentioned before to design the ideal family-friendly stacked home (see title image). The building contains 24 family homes. All apartments are connected on the outside by stairs and wide galleries. As a result, there are opportunities for meeting and playing on all floors. The building is a kind of box construction that tapers from wide to narrow. The resulting terraces are a combination of communal and private spaces. Due to the stacked design, each house has its own shape and layout. The living areas vary between approximately 80 m2 and 155 m2 and a penthouse of 190 m2. Dimensions and layouts of the houses are flexible. Prices range from €400,000 – €1,145,000 including a parking space (price level 2021).
As promised, the building has now been completed, albeit in a considerably 'skimmed-down' form compared to the 'playful' design (left), no doubt for cost reasons. The enclosed stairs that were originally planned have been replaced by external steel structures that will not please everyone. Anyway, it is an attractive edifice.    

This is the 15th episode of a series 25 building blocks to create better streets, neighbourhoods, and cities. This post is about one of the most serious threats to the quality of the living environment, namely the scarcity of housing, which is also unaffordable for many.
In many countries, adequate housing has become scarcer and too expensive for an increasing number of people. Unfortunately, government policy plays an important role in this. But good policy can also bring about a change. That's what this post is about.

As in many other developed countries, for a large part of the 20th century, the Dutch government considered it as its task to provide lower and middle classes with good and affordable housing. Housing associations ensured the implementation of this policy. Add to this well-equipped neighborhood shopping centers, ample medical, social, educational and transportation facilities and a diverse population. When the housing shortage eased in the 1970s, the nation was happier than ever. That didn't take long.

The emergence of market thinking in housing policy

During the last decades of the 20th century, the concern for housing largely shifted to the market. Parallel to this, housing corporations had to sell part of their housing stock. Mortgages were in easy reach and various tax facilities, such as the 'jubelton' and the mortgage interest deduction, brought an owner-occupied home within reach of many. In contrast, the waiting time for affordable rental housing increased to more than 10 years and rental housing in the liberalized zone became increasingly scarce and expensive. In Germany and Austria, providing good housing has remained a high priority for the government and waiting times are much shorter. The photo at the top left part shows the famous housing project Alt Erla in Vienna. Bottom shows left six affordable homes on the surface of one former home in an American suburb and top right is the 'Kolenkit', a social housing project in Amsterdam.

The explosive rise in housing costs

In order to adapt housing cost to the available budget, many people look for a house quite far away from the place where they work. Something that in turn has a negative effect on the travel costs and the time involved. Others settle in a neighborhood where the quality of life is moderate to poor or rent a too expensive house. More than a million households spend much more than the maximum desirable percentage of income (40%) on housing, utilities, and transport.
Between 2012 and 2022, the average price of a home in the Netherlands rose from €233,000 to €380,000. In Amsterdam, the price doubled from €280,000 to €560,000. Living in the city is becoming a privilege of the wealthier part of the population.
It is often assumed that around 900,000 housing units will be needed in the Netherlands by 2030, of which 80% is intended for single-person households.

An approaching change?

It seems that there is a shift going on, at least in policy thinking. The aim is to build an average of 100,000 homes per year in the coming years and to shorten the lead time between planning and realization. Achieving these intentions is uncartain because construction is being seriously delayed by the nitrogen crisis. The slow pace of new construction has once again drawn attention to the possibility of using existing houses and buildings for a significant proportion of these new housing units. More so as it is estimated that 80% of demand comes from single-person households.
The existing housing stock offers large potential for the creation of new living spaces. This potential has been investigated by, among others, the Kooperative Architecten Werkplaats in Groningen, resulting in the report <em>Ruimte zat in de stad</em>. The research focuses on 1800 post-war neighbourhoods, built between 1950 and 1980 with 1.8 million homes, 720,000 of which are social rental homes. The conclusion is that the division and expansion of these homes can yield 221,000 new units in the coming years. Eligible for this are single-family houses, which can be divided into two, and porch apartment blocks, which can be divided into more units per floor. Dividing up existing ground-access homes and homes in apartment blocks is technically not difficult and the costs are manageable. This applies even more if the adjustments are carried out in combination with making the relevant homes climate neutral. In addition, huge savings are made on increasingly expensive materials.
Even more interesting is to combine compaction with topping. This means the addition of one or two extra floors, so that a lift can also be added to the existing apartments. In construction terms, such an operation can be carried out by using light materials and installing an extra foundation. A project group at Delft University of Technology has designed a prototype that can be used for all 847,000 post-war porch houses, all of which need major maintenance. This prototype also ensures that the buildings in which these homes are located become energy-neutral and include facilities for socializing and play. Hence the extra wide galleries, with stairs between the floors and common areas in the plinth (image below right).
 
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The picture shows the average development of the liveability per household in residential neighborhoods in the Netherlands from 2014 (source: Leefbaarheid in Nederland, 2020)
 
This is the 14th episode of a series 25 building blocks to create better streets, neighbourhoods, and cities. This post discusses how to improve the liveability of neighbourhoods. Liveability is defined as the extent to which the living environment meets the requirements and wishes set by residents.

Differences in liveability between Dutch neighbourhoods

From the image above can be concluded that more than half of all households live in neighborhoods to be qualified as at least 'good'. On the other hand, about 1 million households live in neighborhoods where liveability is weak or even less.
These differences are mainly caused by nuisance, insecurity, and lack of social cohesion. Locally, the quality of the houses stays behind.
The neighborhoods with a weak or poorer liveability are mainly located in the large cities. Besides the fact that many residents are unemployed and have financial problems, there is also a relatively high concentration of (mental) health problems, loneliness, abuse of alcohol and drugs and crime. However, many people with similar problems also live outside these neighbourhoods, spread across the entire city.

Integration through differentiation: limited success

The Netherlands look back on a 75 years period in which urban renewal was high on the agenda of the national and municipal government. Over the years, housing different income groups within each neighbourhood has played a major role in policy. To achieve this goal, part of the housing stock was demolished to be replaced by more expensive houses. This also happened if the structural condition of the houses involved gave no reason to demolishment.
Most studies show that the differentiation of the housing stock has rarely had a positive impact on social cohesion in a neighborhood and often even a negative one. The problems, on the other hand, were spread over a wider area.

Ensuring a liveable existence of the poor

Reinout Kleinhans justly states: <em>Poor neighborhoods are the location of deprivation, but by no means always the cause of it.</em> A twofold focus is therefore required: First and foremost, tackling poverty and a structural improvement of the quality of life of people in disadvantaged positions, and furthermore an integrated neighborhood-oriented approach in places where many disadvantaged people live together.
I have already listed measures to improve the quality of life of disadvantaged groups in an earlier post that dealt with social security. I will therefore focus here on the characteristics of an integrated neighbourhood-oriented approach.
• Strengthening of the remaining social cohesion in neighborhoods by supporting bottom-up initiatives that result in new connections and feed feelings of hope and recognition.
• Improvement of the quality of the housing stock and public space where necessary to stimulate mobility within the neighborhood, instead of attracting 'import' from outside.
• Allowing residents to continue living in their own neighborhood in the event of necessary improvements in the housing stock.
• Abstaining from large-scale demolition to make room for better-off residents from outside the neighborhood if there are sufficient candidates from within.
• In new neighborhoods, strive for social, cultural, and ethnic diversity at neighborhood level so that children and adults can meet each other. On 'block level', being 'among us' can contribute to feeling at home, liveability, and self-confidence.
• Curative approach to nuisance-causing residents and repressive approach to subversive crime through the prominent presence of community police officers who operate right into the capillaries of neighbourhoods, without inciting aggression.
• Offering small-scale assisted living programs to people for whom independent living is still too much of a task. This also applies to housing-first for the homeless.
• Strengthening the possibilities for identification and proudness of inhabitants by establishing top-quality play and park facilities, a multifunctional cultural center with a cross-district function and the choice of beautiful architecture.
• Improving the involvement of residents of neighbourhoods by trusting them and giving them actual say, laid down in neighborhood law.
 
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This is the 13th episode of a series 25 building blocks to create better streets, neighbourhoods, and cities. This post discusses the way cities can secure public space, distinguishing symptom control and a more fundamental approach.

Scope of crime

According to the World Health Organization, the risk of being confronted with physical violence significantly detracts from the quality of life. In 2000, homicides worldwide resulted in half a million deaths, nearly twice the number of people who died in a war that year, but less than 40% of fatalities on roads. Many murders are related to drug trafficking. The number of murders in the European Union that year was about 5200. Between 2008 and 2016, car thefts dropped by 36% and robberies by 24%. Both trends leveled off after 2010. However, police-recorded sexual violence in the EU shows an increase of 26% between 2013 and 2016.

Monitoring

Social safety is a precondition for the viability of public space. This applies to who works there, who lives there and who visits it. Frequently chosen solutions are the installation of cameras. Not bad, although streets without cameras run the risk of becoming less safe. Moreover, miscreants know well how to disguise their identity.
In Stratumseind, the illustrious nightlife center of Eindhoven, extensive experiments with CCTV cameras and sensors and, in addition, atmospheric lighting and scents have been executed (photo below right researcher Rinus Kanters in the control room). The city regards this experiment as a 'living lab' and it has continuously been evaluated. The results so far are that no clear connection has been found between this technology and the number of incidents, the feeling of safety among visitors has increased and the police are more quickly on the scene in the event of incidents.

Intensive use

Further conditions are intensive use. The more people on the street, the greater the social security, except for theft. Also 'eyes on the street', apartments in the space above the plinths help. More generally, transparency is of value. Transparent plinths of apartment buildings contribute to it (photo left: the Kleiburgflat, Amsterdam)
Lighting
Lighting is an important issue. It is not even so much about the fierceness of it, which entails other objections, but about the uniformity (photo above right). A particularly wrong idea is to equip lights with motion sensors, so that they only come on when a passer-by approaches. This is at the expense of the ability to keep an overview. There is no objection to slightly dimming the lighting when streets are less busy.

A decent existence

The ultimate policy to reduce crime and improve security is:
• Providing training, guidance and 'social employment', such as the 'Melkert jobs' from the 1990s, to bridge the distance to the labor market.
• Creating guaranteed jobs in the public sector for all. Not only to improve the quality of life of the unemployed, but also to perform numerous tasks that are currently left undone.
• Allocating a decent income to all adults, as long as paid work still falls short. Experiments with basic income show that this increases resilience, self-confidence and the chance of paid work.
• Providing temporary professional (psychological) assistance and guidance with household, and financial management and training on the way to full integration in society.
• The more intensively residents of a neighborhood interact with each other and keep an eye on each other's possessions, the less crime will have a chance. Social control has always been a powerful weapon against crime.
• In anticipation of permanent housing, shelter the homeless to prevent drug-related crimes and give high priority to combating violence and burglary.

It would be naive to think that less inequality and improvements in income, jobs and housing for the poorest groups will eliminate crime altogether. Greed, thrill-seeking, boredom, membership in wrong groups, wrong connections, imitation, mental illness, and alcohol and drugs abuse are not necessarily related to poverty and require judicial action.

Effective prevention and policing

• protection against the relatively small group of repeat-offenders, who are responsible for most crimes, especially violent crimes.
• Close cooperation between residents and the police at neighborhood level
• Police presence on bicycles (better than in cars),
• Detailed knowledge of the police and judiciary of and communication with youth groups that incidentally causes problems
• Sensible and proportionate use of digital resources to track down criminals.
 
 
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Which innovative idea will make it to the stage during the finale of the Amsterdam Science & Innovation Award 2023? This Innovation Award is the Amsterdam competition for research based innovative ideas that contribute to a better world. Check out the website and watch the pre-finalists one-minute videos in which they present their innovative ideas and vote for your favorite! During the finale on 21 November, the jury will award € 10,000 to the three best ideas in the categories of Society, Health and Environment & Climate. 

This is the 12th episode of a series 25 building blocks to create better streets, neighbourhoods, and cities. This post deals with the question of how nature itself can help to deal with excessive rainfall and subsequently flooding of brooks and rivers, although these disasters are partially human-made.
Until now, flooding has mainly been combated with technical measures such as the construction of dykes and dams. There are many disadvantages associated with this approach and its effectiveness decreases. Nature-inclusive measures, on the other hand, are on the rise. The Netherlands is at the forefront of creating space for rivers to flood, where this is possible without too many problems.

Sponge areas

An important principle is to retain water before it ends up in rivers, canals, and sewers. The so-called sponge city approach can be incorporated into the fabric of new neighbourhoods and it creates sustainable, attractive places too. A combination of small and large parks, green roofs, wadis, but also private gardens will increase the water storage capacity and prevents the sewer system from becoming overloaded and flooding streets and houses. Steps are being taken in many places in the world; [China is leading the way](https://www\.dropbox\.com/s/47zxvl3kgbeeasa/Tale of two cities.pdf?dl=0) (photo top right). However, the intensity of the precipitation is increasing. In 2023, 75 cm of rain fell in Beijing in a few days. Under such conditions, local measures fall short. Instead, nature-inclusive measures must be applied throughout the river basin.

Retention basins

In new housing estates, water basins are constructed to collect a lot of water. Their stepped slopes make them pleasant places to stay in times of normal water level. The pictures on the left are from Freiburg (above) and Stockholm (below). The top center photo shows the construction of a retention basin in Lois Angeles.
Wadis
Wadis are artificial small-scale streams in a green bed with a high water-absorbing capacity. In the event of heavy rainfall, they collect, retain and discharge considerably more water than the sewer system (bottom center photo). Green strips, for example between sidewalks, cycle paths and roads also serve this purpose (photo bottom right: climate-adaptive streets in Arnhem).

Green roofs, roof gardens and soils

Green roofs look good, they absorb a lot of CO2 and retain water. The stone-covered urban environment is reducing the water-retaining capacity of the soil. Sufficiently large interspaces between paving stones, filled with crushed stone, ensure better permeability of streets and sidewalks. The same applies to half-open paving stones in parking lots.

Refrain from building in flood-prone areas

Up to the present day, flood-prone parts of cities are used for various purposes, often because the risk is underestimated or the pressure on space is very great. London's Housing and Climate Crises are on a Collision Course is the eloquent title of an article about the rapidly growing risk of flooding in London.
Hackney Wick is one of 32 growth centers set to help alleviate London's chronic housing shortage, which has already been repeatedly flooded by heavy rainfall. However, the construction of new homes continues. Measures to limit the flood damage at ground floor level include tiled walls and floors, water-inhibiting steel exterior doors, aluminum interior doors, kitchen appliances at chest height, closable sewers, and power supply at roof-level. Instead, floating neighbourhoods should be considered.

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We invite you to contribute to the conference "Reinventing the City 2024 - Blueprints for messy cities?"

Deadline to submissions: November 14, 2023
Notification of acceptance: December 14, 2023
submit here>>

The AMS Scientific Conference (AMS Conference) explores and discusses how cities can transform themselves to become more livable, resilient and sustainable while offering economic stability. In the second edition of “Reinventing the City” (23-25 April 2024), the overarching theme will be <em>"</em>Blueprints for messy cities? Navigating the interplay of order and complexity'. In three captivating days, we will explore 'The good, the bad, and the ugly' (day 1), 'Amazing discoveries' (day 2) and 'We are the city' (day 3).

Call for abstracts
The AMS Conference seeks to engage scientists, policymakers, students, industry partners, and everyone working with and on cities from different backgrounds and areas of expertise. We therefore invite you to submit your scientific paper abstract, idea for a workshop or special session with us. Submissions should be dedicated to exploring the theme ‘Blueprints for messy cities?’. We especially invite young, urban rebels to raise their voice, as they are the inhabitants of our future cities.

Assessment
Our scientific committee responsible for the content of the conference program will assess all submissions and select a final program of contributions. Notification of acceptance will follow before 1 December 2023.

Topics
mobility | circularity | energy transition | climate adaptation | urban food systems | digitization | diversity | inclusion | living labs | transdisciplinary research

SUBMISSIONS AND CONTRIBUTIONS
| SCIENTIFIC PAPER ABSTRACTS |
We invite academics, industry partners, and professionals from all ages engaged in the related fields of urban design, governance, architecture, data science, engineering and/or sociology to submit an abstract for a conference presentation of your scientific paper (250-450 words).

| WORKSHOPS |
If you have a workshop proposal, please outline its purpose, the specific knowledge, techniques, or practices it covers, its objectives and learning outcomes, teaching strategies and resources, target audience, and any prerequisites, including the required level of experience (250-450 words).

| SPECIAL SESSIONS |
Next to scientific papers and workshops, we encourage you to submit different types of special sessions. These special sessions can include interactive forums, excursions, or practical demonstrations, depending on the subject and objectives. When submitting your proposal for a special session, we ask you to clearly highlight the session's objectives, expected collaborators (if applicable), the intended audience, and the type of session. Please also indicate whether you prefer an online or in-person format. Please note that you will be responsible for the content and organization of the session (250-450 words).

Submit here>>

Click here to visit the event page and find more information on details about the Scientific Conference.

This is the 11th episode of a series 25 building blocks to create better streets, neighbourhoods, and cities. In this post, I wonder whether nature itself can tackle the environmental problems that humans have caused.

Ecosystem services

According to environmental scientists, ecosystems are providers of services. They are divided into production services (such as clean drinking water, wood, and biomass), regulating services (such as pollination, soil fertility, water storage, cooling, and stress reduction) and cultural services (such as recreation, and natural beauty). In case of nature-inclusive solutions ecosystems are co-managed to restore the quality of life on the earth in the short term and to maintain it in the long term, insofar as that is still possible.

The green-blue infrastructure

The meaning of urban green can best be seen in conjunction with that of water, hence the term green-blue infrastructure. Its importance is at least fourfold: (1) it is the source of all life, (2) it contributes substantially to the capture and storage of CO2, (3) 'green' has a positive impact on well-being and health; (4) it improves water management. This post is mainly about the third aspect. The fourth will be discussed in the next post. 'Green' has many forms, from sidewalk gardens to trees in the street or vegetated facades to small and large parks (see collage above).

Improving air quality

Trees and plants help to filter the water itself. They have a significant role to play in managing water and air pollution. Conifers capture particulate matter. However, the extent to which this occurs is less than is necessary to have a significant impact on health. Particulate matter contributes to a wide range of ailments. Like infections of the respiratory system and cardiovascular disease, but also cancer and possibly diabetes.

Countering heat stress

Heat stress arises because of high temperature and humidity. The wind speed and the radiation temperature also play a role. When the crowns of trees cover 20% of the surface of an area, the air temperature decreases by 0.3oC during the day. However, this relatively small decrease already leads to a 10% reduction in deaths. Often 40% crown area over a larger area is considered as an optimum.

Reduce mental stress and improve mood

According to Arbo Nederland, 21% of the number of absenteeism days is stress-related, which means approximately a €3 billion damage. A short-term effect of contact with nature on stress, concentration and internal tranquility has been conclusively demonstrated. The impact of distributing greenery within the residential environment is larger than a concentrated facility, such as a park, has.

Strengthening immune function via microbiome

The total amount of greenery in and around the house influences the nature and quantity of the bacteria present. This green would have a positive effect on the intestinal flora of those who are in its vicinity and therefore also on their immune function. The empirical support for this mechanism is still rather limited.

Stimulate physical activity

The impact of physical activity on health has been widely demonstrated. The Health Council therefore advises adults to exercise at least 2½ hours a week. The presence of a green area of at least ¼ hectare at 300 meters from the home is resulting more physical activity of adults in such areas, but not to more activity as a whole.

Promoting social contact

Well-designed green areas near the living environment invite social contacts. For instance, placement of benches, overview of the surroundings and absence of traffic noise. The state of maintenance are important: people tend to avoid neglected and polluted areas of public space, no matter how green.

Noise reduction

Vegetation dampens noise to some extent, but it is more important that residents of houses with a green environment experience noise as less of a nuisance. It is assumed that this is due to a mechanism already discussed, namely the improvement of stress resistance because of the greenery present.

Biophilic construction

For years buildings made people sic. A growing number of architects want to enhance the effect of 'green' on human health by integrating it into the design of houses and buildings and the materials used. This is the case if it is ensured that trees and plants can be observed permanently. But also, analogies with natural forms in the design of a building
The 'Zandkasteel', the former headquarters of the Nederlandse Middenstandsbank in Amsterdam, designed by the architects Ton Alberts and Max van Huut, is organically designed both inside and outside, inspired by the anthroposophical ideas of Rudolf Steiner. The (internal) water features are storage for rainwater and the climate control is completely natural. The building has been repurposed for apartments, offices and restaurants.

Green gentrification

Worldwide, there is a direct correlation between the amount of greenery in a neighborhood and the income of its residents. Conversely, we see that poorer neighborhoods where new green elements are added fall victim to green gentrification over time and that wealthier housing seekers displace the original residents.
The challenge facing city councils is to develop green and fair districts where gentrification is halted and where poorer residents can stay. Greening in poor communities must therefore be accompanied by measures that respect the residential rights and aim at improving the socio-economic position of the residents.

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The Social Enterprise World Forum (SEWF) is a global annual flagship event that brings together social entrepreneurs, policymakers, investors, academics and other impact-led professionals to strengthen impact entrepreneurship and encourage systemic change.

This year, the main event takes place in Amsterdam Noord and online and is co-hosted by Amsterdam Impact, the City of Amsterdam’s impact entrepreneurship initiative, and Social Enterprise NL.

Here’s what you can look forward to during SEWF23 week.

Most important causes of death worldwide (Source: The Lancelet, le Monde)
 
This is the 10th episode of a series 25 building blocks to create better streets, neighbourhoods, and cities. In this post, I mainly focus on health problems which are directly related to the quality of the living environment  

Are cities healthy places?

According to the WHO's Global Burden of Diseases Study, 4.2 million deaths worldwide each year are caused by particulate matter. The regional differences are significant. Urban health depends on the part of the world and the part of the city where you are living. More than 26 million people in the United States have asthma and breathing problems as a result. African-American residents in the US die of asthma three times as often as whites. They live in segregated communities with poor housing, close to heavy industry, transportation centers and other sources of air pollution.
Globally, the increasing prosperity of city dwellers is causing more and more lifestyle-related health problems. Heart disease, and violence (often drug-related) has overtaken infectious diseases as the first cause of death in wealthy parts of the world.  

The Netherlands

Very recently, Arcadis published a report on 'the healthy city'. This report compares 20 Dutch cities based on many criteria, divided over five domains. The four major cities score negatively on many aspects. In particular: healthy outdoor space, greenery, air quality, noise nuisance, heat stress and safety. Medium-sized cities such as Groningen, Emmen, Almere, Amersfoort, Nijmegen, and Apeldoorn, on the other hand, are among the healthiest cities.
In Amsterdam, the level of particulate matter and nitrogen dioxide (NO2) in 2018 exceeded World Health Organization standards in many streets. The GGD of Amsterdam estimates that 4.5% of the loss of healthy years is the result of exposure to dirty air.  

Collaborative measuring air quality

In various cities, groups of concerned citizens have started measuring the quality of the air themselves. A professional example is the AiREAS project in Eindhoven. An innovative measuring system has been developed together with knowledge institutions and the government. Sensors are distributed over the area of the city and the system provides real-time information. The AiREAS group regularly discusses the results with other citizens and with the city government. The measurement of the quality of the air is supplemented by medical examination. This research has confirmed that citizens in the vicinity of the main roads and the airport have an increased risk of mortality, reduced lung function and asthma.
The AiREAS project is linked to similar initiatives in other European cities. Occasionally the data is exchanged. That resulted in, among other things, this shocking video.  

Future?

Could the future not be that we are busy doing the obvious things for our health, such as walking, cycling, eating good food and having fun and that thanks to wearables, symptoms of diseases are watched early and permanently in the background, without us being aware of it? The local health center will monitor and analyze the data of all patients using artificial intelligence and advise to consult the doctor if necessary. An easily accessible health center in one's own neighborhood remains indispensable.
 
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This is the 9th episode of a series 25 building blocks to create better streets, neighbourhoods, and cities. Casualties in traffic are main threats to the quality of the living environment. ‘Vision zero’ might change this.
Any human activity that annually causes 1.35 million deaths worldwide, more than 20 million serious injuries, damage of $1,600 billion and is a major cause of global warming would be banned immediately. Except for the use of the car. This post describes how changes in road design will improve safety.

The more public transport, the safer the traffic

Researchers from various universities in the US, Australia and Europe have studied the relationship between road pattern, other infrastructure features and road safety or its lack. They compared the road pattern in nearly 1,700 cities around the world with data on the number of accidents, injuries, and fatalities. Lead researcher Jason Thompsonconcluded: <em>It is quite clear that places with more public transport, especially rail, have fewer accidents</em>. Therefore, on roads too public transport must prioritized.

The growing risk of pedestrians and cyclists

Most accidents occur in developing and emerging countries. Road deaths in developed countries are declining. In the US from 55,000 in 1970 to 40,000 in 2017. The main reason is that cars always better protect their passengers. This decrease in fatalities does not apply to collisions between cars and pedestrians and cyclists, many of which are children. Their numbers are increasing significantly, in the US more than in any other developed country. In this country, the number of bicycle lanes has increased, but adjustments to the layout of the rest of the roads and to the speed of motorized traffic have lagged, exposing cyclists to the proximity of speeding or parking cars. SUVs appear to be 'killers'and their number is growing rapidly.

Safe cycling routes

In many American cities, paint is the primary material for the construction of bike lanes. Due to the proximity of car traffic, this type of cycle routes contributes to the increasing number of road deaths rather than increasing safety. The Canadian city of Vancouver, which doubled the number of bicycle lanes in five years to 11.9% of all downtown streets, has the ambition to upgrade 100% of its cycling infrastructure to an AAA level, which means safe and comfortable for all ages and abilities. Cycle paths must technically safe: at least 3 meters wide for two-way traffic; separated from other traffic, which would otherwise have to reduce speed to less than 30 km/h).  In addition, users also need to feel safe.

Street design

Vision Zero Cities such as Oslo and Helsinki are committed to reducing road fatalities to zero over the next ten years. They are successful already now: There were no fatalities in either city in 2019. These and other cities use the Vision Zero Street Design Standard, a guide to planning, designing, and building streets that save lives.
Accidents are often the result of fast driving but are facilized by roads that allow and encourage fast driving. Therefore, a Vision Zero design meets three conditions:
• Discouraging speed through design.
• Stimulating walking, cycling and use of public transport.
• Ensure accessibility for all, regardless of age and physical ability (AAA).
The image above shows a street that meets these requirements. Here is an explanation of the numbers: (1) accessible sidewalks, (2) opportunity to rest, (3) protected cycle routes, (4) single lane roads, (5) lanes between road halves, (6) wide sidewalks, (7) public transport facilities, (8) protected pedestrian crossings, (9) loading and unloading bays, (10) adaptive traffic lights.

Enforcement

Strict rules regarding speed limits require compliance and law enforcement and neither are obvious. The Netherlands is a forerunner with respect to the infrastructure for bikes and pedestrians, but with respect to enforcement the country is negligent: on average, a driver of a passenger car is fined once every 20,000 kilometers for a speeding offense (2017 data). In addition, drivers use apps that warn of approaching speed traps. Given the risks of speeding and the frequency with which it happens, this remissing law enforcement approach is unacceptable.
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