The collaboration between BIG Architects of Copenhagen, Denmark, and NOD Landscape Architects of Stockholm, Sweden, provides not only a solution to Slussen, one of Scandinavia’s busiest intersections but most importantly privileges the pedestrian and cyclist.
When the Stockholm City Council invited BIG and NOD to act as design consultants on Slussen, the direction given was to create a proposal that reconnects the historic Gamla Stan with Södermalm. Understanding the long legacy of previous attempts to solve Slussen’s traffic chaos, the team set out to create a single form within which the different modes of traffic are layered. The proposal touches the waters surrounding Gamla Stan and slowly terrace up using ascending and descending ramps to create a new, coherent area focusing on providing an attractive and functional setting for both movement and rest.

Currently considered inaccessible to pedestrians and cyclists, Slussen is a black hole in the heart of Stockholm. It is no wonder then that Danish-Swedish collaboration has made sure to offer cyclists as well as pedestrians easy access to and through the area. The proposal turns Slussen into an urban recreational area assuring easy movement for the citizens and tourists of Stockholm. Slussen will gain a whole new kind of urban space unlike any other in the world, where artwork, a summer’s midnight stroll and outdoor theatre can cohabitate with the need to move cars, buses, trains, metro, and boats. The strength of Slussen lies in its continual and varied movement which the proposed ramped landscape only underscores. The heavy traffic of cars and buses is carefully immersed under the rising hillside. Suddenly due to the submersed traffic, large areas have been freed and are made attractive to the entire city to enjoy. As a result, new opportunities for urban life are created.

The basic traffic system has already been developed by Nyrens Arkitektkontor as part of an architectural competition, with soft traffic and a public program on the top and with heavy traffic at ground floor level, storing away boats, buses, metro, cars and trains. But instead of separating the different levels, connected only by stairs and elevators in a traditional way, we propose to integrate all public, accessible areas around Slussen by interweaving the levels using descending and ascending ramps as this will allow people to move freely between the levels.

Pedestrian zones are designed to connect the already existing promenades and road crossings, and all areas of the new Slussen are as such accessible to pedestrians. The bicycle lanes follow the road as well as the promenade along the waterfront, and are pulled away only where the curvy bays of the new Slussen are created to leave space for pedestrians to enjoy the waterfront.

Today Slussen does not take advantage of its rising topography. Seeking to utilize its unique setting the proposal uses the terraced hillside to house kiosks, shops, and tourist information stands accessible through the network of ramps. In this way, a new and active urban area is created. In addition to the landscaped contours and pathways characterising BIG and NOD’s proposal, the dispersion of light has been instrumental in developing the site and the various levels. By day, natural light will pierce through circle shaped skylights into the lower levels. By night, the skylights will be illuminated from below. The expression will thus vary from dusk till dawn, from season to season and depending on the weather. This dynamic process and the continual hum of traffic will serve as the backdrop to a new urban form and regenerate life into the surrounding neighbourhoods.

There is an animation showing the complete program as well. I will put it up in a separate post as well.

Ping Intressant.se

Andra bloggar om: slussen, stockholm, kultur, arkitektur landskapsarkitektur, bjarke ingels, stadsbyggnad

The idea of making walls by stacking bags of sand or earth has been around for at least a century. Originally sand bags were used for flood control and military bunkers because they are easy to transport to where they need to be used, fast to assemble, inexpensive, and effective at their task of warding off both water and bullets.

At first natural materials such as burlap were used to manufacture the bags; more recently woven polypropylene has become the preferred material because of its superior strength. The burlap will actually last a bit longer if subjected to sunlight, but it will eventually rot if left damp, whereas polypropylene is unaffected by moisture.

Because of this history of military and flood control, the use of sandbags has generally been associated with the construction of temporary structures or barriers. Using sandbags to actually build houses or permanent structures has been a relatively recent innovation.

It was an Iranian-born architect named Nader Khalili who has popularized the notion of building permanent structures with bags filled with earthen materials. Actually his first concept was to fill the bags with moon dust! Attending a 1984 NASA symposium for brainstorming ways to build shelters on the moon, Khalili coupled the old sandbag idea with the ancient adobe dome and arch construction methods from his homeland in the Middle East. He realized that bags filled with lunar “dirt” could be stacked into domes or vaults to provide shelter.

Khalili came up with a further refinement on this building concept on Earth: for a more permanent, shock-resistant structure, why not place strands of barbed wire between the courses of bags, thus unifying the shell into a more monolithic structure?

At first Khalili was filling his experimental bags with desert sand, but then he evolved his idea of “superadobe,” where bags or long tubes of polypropylene bag material would be filled with a moistened adobe soil that would dry into large adobe blocks. In this case the original bag material was merely the initial form and would not necessarily be an integral part of the eventual structure.

Soon after these first experiments, Khalili began publicizing his work through newspaper and magazine articles and conducting workshops and seminars on the techniques that he was perfecting. Many people who read about his work, visited his compound in Hesperia, California, or studied with him there, decided to go ahead with their own experiments with his ideas.

Among these “early adopters” were Joe Kennedy, Paulina Wojciechowska, Kaki Hunter and Doni Kiffmeyer, Akio Inoue, and Kelly Hart. I believe that it was Joe Kennedy who coined the more general term “earthbag” to suggest that the bag could contain a variety of earthen materials.

Paulina Wojciechowska was the first to write an entire book on the topic of earthbag building: Building with Earth: A Guide to Flexible-Form Earthbag Construction was published in 2001. This featured some of her early experiments done at Khalili’s CalEarth, along with several other case histories.

Akio Inoue, from Tenri University in Japan, has done extensive experimentation with earthbag construction, both on the campus of the University and in India and Africa where many other domes have been built for assistance programs.

Kaki Hunter and Doni Kiffmeyer (a couple) became enamored with earthbag construction after studying with Khalili, and worked on a variety of projects, both for themselves and for clients. In 2004 they wrote and got published another book, Earthbag Building: the Tools, Tricks and Techniques, based on their particular experience.

Kelly Hart (the author of this article) first began experimenting with earthbag building in 1997, after being exposed to the concept while producing his video program, A Sampler of Alternative Homes: Approaching Sustainable Architecture. He later documented his experience in actually building his own home in another program titled Building with Bags: How We Made Our Experimental Earthbag/Papercrete Home. Both of these programs are now available as DVD’s.

In the meantime, Nader Khalili was continuing the promotion of his “Superadobe” technique and eventually decided to patent the idea, which he obtained in the U. S. in 1999, using very general terms that cover using bags made of any material being filled with virtually any material, and combining these with barbed wired between the courses. While having made many public statements that this concept was his gift to humanity, he obviously wanted to capitalize on the potential economic reward.

Many of us who had been engaged in promoting earthbag building on our own were contacted by Khalili and asked to enter into contracts with him in order to continue our work. It didn’t take much research to discover that his patent could easily be disqualified because he had been publicizing his techniques through various media for at least four years before he even applied for his patent. Patent law clearly states that such publicity occurring prior to one year before the patent application would disqualify it for consideration.

So now the door is wide open for anyone to take this concept and run with it, and more people are doing so all the time, all over the world. While Khalili (and most of his students) have focused primarily on using the bags to form large adobe blocks, others have tried filling the bags with a variety of other materials, such as crushed volcanic rock, crushed coral, non-adobe soils, gravel, and rice hulls.

Earthbag building is unique among all other building technologies in that it can be either insulation or thermal mass, depending on what the bags are filled with. This is a very important distinction, because these characteristics of a wall greatly influence how comfortable, economical, and ecological any given system will be.

Safety is of prime concern with all building technologies, and much experimentation and testing has been done to establish guidelines for many ways of building. Khalili has established a relationship with the building department in Hesperia, California where CalEarth is located, an area where earthquakes are naturally a great danger. In 1993 live-load tests to simulate seismic, snow and wind loads were performed on a number of domed earthbag structures at CalEarth and these exceeded code requirements by 200%.

In 1995 dynamic and static load tests were performed on several prototypes for a planned Hesperia Museum and Nature Center to be constructed using Khalili’s Superadobe concepts with both dome and vault shapes. All of these tests exceeded ICBO and City of Hesperia requirements.

In 2006, at the request of Dr. Owen Geiger of the Geiger Research Institute of Sustainable Building, the Department of Civil and Mechanical Engineering of the U.S. Military Academy at West Point conducted several controlled and computer-monitored tests to determine the ability of polypropylene earthbags filled with sand, local soil, and rubble to withstand vertical loads. Their written report concluded that “overall, the earthbags show promise as a low cost building alternative. Very cheap, and easy to construct, they have proven durable under loads that will be seen in a single story residential home. More testing should prove the reliability and usefulness of earthbags.”

Despite the success of these tests, earthbag building concepts have yet to be incorporated into the International Residential Building Code. Obviously more enlightened acceptance of the demonstrated viability of earthbag building needs to occur!

It is difficult to know how many residences and other earthbag structures have been made at this point, probably hundreds if not thousands. Many of us have been promoting the technique for use as emergency shelters, and certainly some have been built for this reason. It is easy for folks to accept this way of building temporary shelters because it fits the historical model of sandbag use.

But many of us have also built substantial homes using earthbags, and in the process realized how truly versatile and sustainable the technique is. I wouldn’t be surprised if many of these earthbag homes are still standing long after their conventional counterparts built contemporaneously have disintegrated.

Photography by Jonathan Cruz Photography

I attended the Natural Building Colloquium held this year at the Orella Ranch overlooking the Pacific Ocean near Santa Barbara, California, at the end of October. What a magnificent setting this was to spend a fine week of connecting with fellow enthusiasts of the natural building movement. About 70 attendees shared our insights, stories, passions, songs, poetry, cooking, concerns, and labor. I came away with gratitude for the opportunity to interact with such caring people, and with a renewed sense of confidence that we will manage to help forge a sustainable future.

This year’s Colloquium was organized by the Natural Building Network (www.naturalbuildingnetwork.org) and was hosted by Gunner Tautrim, who represents the sixth generation of this family living on this land since 1866. The accommodations were primitive, with only a small kitchen as enclosed space; the rest of the facilities were rustic pit privies, temporary solar shower stalls, temporary bamboo and tarp meeting spaces, and a nice lawn area. We brought tents for sleeping. All of this was happening with the grandeur of the Pacific coast as a backdrop, and the elemental simplicity and beauty combined to create an appropriate mood for contemplating the benefits of building naturally. After breakfast each morning we would gather in a big circle on the lawn to review the various options for the rest of the day and share other thoughts. Typically the mornings were devoted to work on a sturdy, permanent, multi-stalled toilet facility that was already framed with wood. Gunner wanted the walls and a surrounding fence to be finished with natural materials, and there were many volunteers who formed teams to accomplish this. Mostly, split bamboo or recycled fencing was used for a framework, over which cob and clay finishes were applied.

Lunchtime often featured tables where specific discussions would occur, having spontaneously been announced at the morning circle. The afternoons were reserved for many concurrent presentations or discussions, so there were always hard choices to make about what to attend. During the course of the week, over forty different topics were explored, in a variety of meeting places. These ranged from the use of materials (such as bamboo, cob, adobe, and lime) to more theoretical discussions about engineering, thermal properties, efficiency, and design. One of the most popular forums was about codes and ways of improving the acceptance of natural building techniques by building officials. I will be writing about this topic in more detail in a future blog post.

I shared one two-hour presentation about earthbag building around the world with a woman architect from Israel, who had brought plans for an earthbag residence that she was designing for a client there. First I talked about the history and development of this technique, and then profiled a number of projects that have been completed (see www.earthbagbuilding.com). After this introduction, the architect laid her plans on a table and we all discussed specific questions that she had about them. This was a great way to learn some of the basics of earthbag building, and then apply these concepts to a specific situation.
I was very pleased that a discussion was convened to explore the role that natural building can play in what was described as the “long emergency,” or the compounded effects of climate change, peak oil and other resource depletion, population pressures, and financial crises. Without this discussion I would have felt that we were negligent in addressing these most pressing issues. I plan to write another entire blog post about this.

After dinner (which was always delicious and usually vegetarian), we were treated to a variety of programs or entertainment that emanated from our group. Mostly these were slide or Power Point presentations, but one night was devoted to a talent show with lots of music and some stand-up comedy…great fun. I showed lots of pictures I took when in Jeddah, Saudi Arabia a couple of years ago where I had been invited to discuss sustainable architecture with the faculty and students at the King’s University (see www.greenhomebuilding.com/weblog for my essay about the situation there) .

One morning, about half of us opted to attend a tour of historic adobe buildings in the heart of Santa Barbara. The earliest remnants date to the 1780’s when Spain authorized the construction of a presidio and the Santa Barbara Mission. Much of this early adobe construction was toppled during subsequent earthquakes, but recent reconstruction, using stabilized adobes, has returned the area to its original presence. I chatted (in Spanish) with the Guatemalan and Mexican crew who were making new adobe blocks for further repair work. On the return trip to the Orella Ranch, several of us made a detour to the nearby beach to dip our feet in the ocean.

One of the delights of this event was the participation of James from Zimbabwe, Africa. This very engaging fellow brought with him pictures of a lovely little thatched cob circular building that he and some friends had made. He also brought his large thumb piano to serenade us with African ballads. This was a reminder of the deep roots that natural building has from all corners of the world.

All together this week of camping out in this spectacular place and connecting with these dedicated and compassionate souls has left me feeling heartened that we will find ways to overcome the enormous obstacles that lay ahead.

On a very foggy night before we were to disperse the next morning, during our closing ceremony, we arranged ourselves in two large circles that faced each other. We (on the outer circle) were asked to assume the role of addressing our ancestors (on the inner circle) from some indefinite time in the future. When I did this I felt strangely like I was really speaking from the future. I told the young woman who was sitting across from me that I did not blame her for the difficulties that she and subsequent generations had endured. I said that the pattern was innocently established well before she was born. Industrialization was fashioned to improve life, not deteriorate it, and the consequences were not foreseen. And then I told her how much I appreciated the hard work she was doing to address and correct the mistakes of our ancestors. I said that because of the actions of her generation, we in the future were enjoying a simple and healthy life based on ecological balance, and that we owe her and many of her generation our gratitude for all that they did to make this possible. We then stood and embraced, the Future and the Present, for a moment of true compassion.

To see more of my pictures taken at this event go to flickr.com/photos/kellyhart.

the lounge and bookshop areas of bologna's new fabrica store

after seven years of being located on via rizzoli, the bologna fabrica features shop has moved to another
historical part of city's centre at strada maggiore. designed by fabrica's young designers, valentina carretta
and sam baron, the atmosphere is low-tech and uses elements which are typically associated with
the construction industry: wooden boxes, concrete quarterdecks, pallets and electrical devices, alongside
other furnishings. the walls are decorated with hand-drawn graphics by marta teixeira.


wooden palettes are used to display products, with interactive clock by tomonaga tokuyama right

designboom snapshots: fabrica at milan design week 2007
designboom snapshots: fabrica at milan design week 2008

fabrica: http://www.fabrica.it
sam baron: http://sambaron.blogspot.com