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Showing posts with label urbanism. Show all posts
Showing posts with label urbanism. Show all posts

Monday, October 12, 2015

Smart urban design and smart cities

Cities as complex systems evolve over time ; some take millenea and others few decades..Time on a city scale is essentially spatial for each action in a city causes it to further expand geographically , to contract or to slowly wither..
As such, time is a dimension that has been researched by Jane Jacobs and other urban theorists as an essential factor in understanding cities 

In our age, time-space are compressing. We can have an in-depth two hour one to one comversation with a friend in asia while we are sitting with a group of our colleagues in our office in the states..

This dillution is impacting the urban space in cities for as these becone compress, a virtual city is created in addition to its spatial countrepart .That virtual city which Bill Mitchels  has prophetized  in his book "city of bits" is exponantially augmenting the actions occuring in real time and thus embedding  a multiplicity of meanings of the urban space.
Lately , a mall in dubai -Wafi Mall - hosted a fashion event as part of Dubai Fashion Week. The invites were sent virtually to attendees via social media creating a virtual community of the event that might outlast the event itself and thus augment the city social network beyound its urban fabric. Post event, tens of videos via social media captures the fashion show linking it to the mall. These videos were sent to hundreds of social media friends, felliw twitters or insta followers .The mental image of that space  - an empty court or corridor in wafi mall- is augmented to include these videos - that compresses space and time into three minutes , enough to alter our image of that space and feeds into our overall image of the city.
That is the challenge we face as urban designers - the challenge of grasping this multitude of representations into our proposals and our visions for our cities so they can actually benefit organically of that augmented reality .






Tuesday, November 12, 2013

ecological urban design

Ecological Urban Design
Nadine chahine
Ecological urban design is becoming a reality - a reality endorsed by one truth -our cities are an ecosystem operating in a larger eco-system. Once we understand and are aware of the intricate details of how these two ecosystems can complement each other, our cities - being the largest man made creations - will definitely heal from the alarming ecological footprint they are producing.

Figure 1-cities as urban ecosystems
Roads act as main way of transporting people and goods from the point of entry of a neighbourhood to an array of potential stop stations. The choice we human make when designing such a road needs to be influenced by the way our brain interpret and perceive these different possibilities. As designers, we are responsible for ensuring legibility- the capability of a city arteries(roads) to be understood intuitively . Although it is a design factor, it goes a long way in addressing efficiencies; the more direct and clear it is for our brains ( or GPS ) to guide us through the maze of points we need to go to ,the more possibilities for alternative transport mode can be thought of such as tram, monorail, biking tracks ,pedestrian zones. We tend to always analyse the pedestrian network as running parallel to roads through the inclusion of sidewalks sandwiched between the roads and the buildings .However, cities that have been resilient through thousands of years prove to us that our rationalisation of how we walk in cities is reductionist to our urban spaces. Walkable cities are legible .

Figure 2 walking is a choice that legible cities force us to take
Whether it is surface, multi story or basement parking, it plays a role in increasing accessibility to public transport points , pedestrian retail zones within the city ,civic spaces .accessibility as a design facto is highly linked to proximity of public transport  to public spaces and recreational spaces .it results in  vibrancy and animation of these spaces during all days and across different population segments ,
An example of ecological urban design is Downtown Silver Spring .The Development near transit stations is often compact and intense which gave the developer an opportunity to do Placemaking. The design of Civic open spaces make the development unique and fulfil an important need in compact, urban neighbourhoods.
 After residents in Silver Spring, Maryland, called for more open space, Montgomery County, Maryland, planners wrote guidelines for a Transit Oriented Development. A developer of a 27-acre project a short distance from the Metro stop responded by redeveloping the  suburban superblock around a series of public spaces by Bing Thom Architects and Sasaki Associates. The public spaces add to the urban centre distinctness and a sense of place .


Figure 3-Source:bettercities.net

Cities in the Gulf are part of a larger ecosystem – a coastal desert .The heat in urban spaces is caused through the reflection of the sunlight rays on the horizontal and vertical surfaces. This warming leads to an over use of  air conditioning - air cooling that consumes fossil fuels . In these days, our technologies are focused in either inventing materials that do not get affected by sun rays or cooling technologies to save on energy. What about wind? What about we work with the wind? Understanding the relationship between sun, wind and the orientation of our city fabric, streets and public space is important to manage efficiently the city as an ecosystem leading to efficiencies in energy consumption especially if it is applied on a district level and city level. Xeritown is a development in Dubai that have used wind in shaping its urban fabric-see figure 2

Figure 4-Xeritown  used wind to reduce heat by reorienting the fabric to benefit from cool breeze coming from the sea to the desert -source-Carboun.com

Greening the city is gaining momentum as a substantial resource efficiency initiative. There is always a pitfall in our cities to consider greening the city as just dedicating a big plot of land for a park .Actually, greening the cities now is expanding into urban ecosystem management through Urban agriculture and Biodiversity protection activities. We share with these city elements the oxygen and carbon - carbon being the enemy number one across the world when it comes to national sustainability campaigns. We look for ways to buy, share , transfer , calculate and resolve carbon footprint issues . What about plants? Cities are looking for various ways now to incorporate urban agriculture projects. In Dubai, Zaabeel park acts as an urban haven reducing heat and the impact of sheikh zayed highway high traffic activities carbon emissions. Zaabeel park also hosts a numerous of local adapted flora species that with time might become also a haven for local birds, insects and other fauna species. One of the interesting use of zaabeel park is storm water management due to its proximity to Dubai International Financial center .In case of wind storms, its palm trees might reduce the impacts of san erosion on the neighbourhoods in karama and bur dubai.


Figure 5-possible projects in urban agriculture
In ecology, urban ecosystems are not mere assemblages of their parts but are continually growing and changing along with their elements. The generative field of a living system extends into the environment and connects the two, for what is needed for the health of the entire system.  It is about the connected fabric of constantly evolving relationships between all living things.
 Ecological urban design, in face of the current pressures, adopts a holistic design approach that combines accessibility, walkability, local climate constraints, greening cities in order to produce places that are meaningful . Our spaces will turn into places that breath, inspire, uplift and even heal...

Wednesday, February 13, 2013

Valentine and cities

Valentine day .. Red hearts .. Red roses .. Red gadgets .. Teddy bears .. Candle lights .. The day where couples celebrate love , romance and intimacy ..
Love has been always associated with intimacy with the capacity of opening up a deep part of ourselves to another .. It begins With trusting oneself .. Trust is built through communication and space ..
How cities can support communication ? How cities can support trust ? How cities can support intimacy ?
Florence comes here as a good example .. It's network of piazzas , human scale streets, and unpredictable fabric is a physical manifestation of intimacy ,,, it is as if the buildings are supporting each other .. There is no boundaries between urban - public an facade - private .. Although both are well defined well enclosed ..
Cities are our most complex human creations and as such it needs to be essentially human allowing intimacy to be embodied within its streets within its architecture

Tuesday, February 12, 2013

It is not just another software.. It is GIS

GIS stands for geographical information system . It's technicalities are known to most urbanises and teams engaged in urban planning because of the versatility and the diversity in which it's base map and database is built ..
During the years , working with private and public sectors institutions , I realised that the focus on the output and the form in which the analysis need to shown especially the interactivity of the web-view made GIS a one time exercise ..
As a professional , I perceive GIS as a decision making tool on the planning decisions ranging from land use allocation to height .. It is this focus and function that optimises and justifies the investment in the application and the training it needs ..
For GIS to be that, it has essentially to be adopted as an essential part of the organisation policies and development procedures .. The management as well as the employees need a change management strategy that focus on true challenges in the organisational culture as well as the technical skills upgrade program that need to roll out ..
So may argue that GIS is a tactical decision .. It is just a software .. Well, it is not .. It is a strategic decision that implies that we need a more sophisticated platforms that enable multiple decision points to weigh in before we approve a a direction or approach..
So, before you sign the procurement form or the invoice for acquiring a GIS in your company , ask one question : what is your strategy to make it a part of the daily tasks of the employees ?

Saturday, February 2, 2013

More life energy in urban space

Cities are one of the most intricate human inventions ..multiple generation think , imagine , plan and incrementally build neighborhood , communities which grew into districts connected by an increasingly interconnected flows of goods and people .. It is the largest laboratory to see in real time how human shape their physical environment by the way they think about their relationship with space
We are the space .. Because urban space essentially is born in our minds
So to answer the question , if we need to have more life energy In our cities , we need to study the beliefs system of its communities regarding how they energize themselves
Is it through socializing in open public spaces ?
Is it through small gathering in their houses ?
Is it through exchanging knowledge ?
Is it through getting in touch with nature ?
What are their habits in shaping their urban space?
It is in these simple questions that the civil contract by which they decided to live together is revealed ... That civil contract that list of values , habits and beliefs will point out to the sources of life energy that are needed to be injected in failing cities , sad cities , unhappy cities , soulless cities .