Showing posts with label appropriate technology. Show all posts
Showing posts with label appropriate technology. Show all posts

Wednesday, December 23, 2015

Appropriate Technology, Narcissism and the Savior Complex

Over the last year or so, I've been discussing the narcissism of First World culture, and especially of Anglo-American culture.  I've noted how that narcissism drives many members of this dominant culture to cast themselves as the saviors of the world, and to cast the rest of the world as either unredeemable villains or unteachable idiots.  (It also hinders that culture from accepting the reality of a world of limits.)  But this week I realized that I had touched on these themes nearly seven years ago, in a series of posts I wrote on the topic of "appropriate technology."  Here is a link to one of those posts, titled, "The Distasteful Truth."  Some of the links in that post no longer work, so here, here, and here are links to the story of Mr. Mohammed Bah-Abba and his original invention of the zeer, or pot-in-pot refrigerator.  And here is a link to the story of a British "savior of the world" who "invented" Mr. Bah Abba's invention ten years after he invented it.  Aren't we so blessed that Emily Cummins arose as a savior of Africa?

Friday, July 1, 2011

The Sound Foundations of Engineered Earth Construction

Earth construction has recently attracted great interest as post-Peak building method for the First World. (By post-Peak methods, I mean methods of producing useful products which are suitable for a declining or collapsing economy whose resource base is drying up.) The reasons for this interest have to do with looming resource constraints, in particular, the resources required for construction methods which have become standard over the last hundred years in the developed world. However, the principles of proper earth building design and construction must be thoroughly understood and properly implemented in order to avoid loss of life due to failure and collapse of buildings. There is a strong need for validation of techniques, practices and principles of structurally sound earth building. This validation must be accomplished via experimentation and mathematical modeling and analysis.

This validation is also of special interest in the Third World (also known as the developing world), where, according to at least one source, approximately one fifth of the world's population lives in adobe and rammed earth structures, and where, according to another source, more than 90 percent of the population in moderate to severe seismic zones is living and working in non-engineered earth buildings. A body of work now exists which documents the behavior of earth buildings when subjected to various loading events, including seismic and wind events. This development of this body of work has been spearheaded by engineering professionals, universities and governmental agencies both in the developing world and in the First World nations of the Global South.

This work reveals some surprising facts, both with regard to safe earth construction best practices and with regard to the flow of useful information in the developing world. As far as the flow of useful information, two things can be observed. First, there is a much greater proportion of public-minded engineering and technical professionals in the developing world compared to professionals in the First World. This is seen in the willingness of researchers to openly and freely disseminate their published work via the Web without charging rent on “intellectual property.” In the First World, on the other hand, rent-seeking vultures have restricted the free flow of potentially life-saving technical information in many cases. (Many of the publications from First World sources on the topic of earth construction are behind paywalls. One refreshing exception in the United States is the Getty Institute.) This is one reason why the Third World may be better poised for post-Peak adaptation than the First World. Secondly, the universities and professionals of the Third World are every bit as capable and competent as those in the First World, and in fact they may be far more creative.

In the literature which I have discovered, there are two categories of discussion regarding performance of earthen structures: the performance of non-engineered structures and the performance, experimental testing and analysis of engineered earthen structures. These discussions reveal the following observations:

  1. Almost all of the literature states that typical non-engineered earthen structures perform very poorly when subjected to severe and sudden wind loads or seismic events. This applies both to rammed earth (also known as tapia, taipal or pise de terre), cob and adobe structures. Rammed earth constructions and other earth structures can be highly susceptible to damage from earthquakes and other ground motion.

  2. The mechanism of disintegration of earth walls for various types of earth construction have been studied via shake table and compression tests. Among other things, these tests have documented the anisotropy of multi-layer rammed earth walls. A material that is anisotropic has physical properties that vary at different locations and in different directions in the material rather than being uniform throughout the material. This is important if there is a concern that a wall made of anisotropic material might have material properties that are not constant throughout the wall.

  3. Techniques for stabilization and reinforcement of earth structures have been studied. One study focused on two particular approaches: internal reinforcement via chicken wire or bamboo, and external reinforcement with bamboo or wooden members. Internal reinforcement did not work nearly as well as external reinforcement, which spread earthquake stresses over a large wall area, dissipating earthquake energy without causing major cracking.

  4. Proper reinforcement of earthen walls is key to surviving earthquakes and other environmental events. Unreinforced earthen structures suffered a number of typical failure modes. In addition, walls or wall elements that are reinforced internally with biodegradable materials like straw have been known to fail due to degrading of the reinforcement by insects and rot.

  5. As a result of laboratory tests, mathematical modeling and observations of actual earth structures in the aftermath of actual earthquakes, a number of governmental agencies and NGO's have published earth construction design guides. Many of these design guides agree on key points. In addition, there are countries in the developing world and the Global South which have formulated or are formulating earth building codes. New Zealand is one such case. Their New Zealand Earth Building Standards can serve as a repository of best practices and a starting place for model codes for earth building in other countries. Unfortunately, access to the New Zealand standards is not free.

  6. In addition to design guides for building professionals and code-enforcing officials, certain governments and NGO's have developed earth construction manuals for non-professional, unskilled builders who would be typical in rural or poor urban populations. Among the governmental agencies disseminating this design information is SENA (Servicio Nacional de Aprendizaje, www.sena.edu.co), a national public entity of Colombia in South America, which publishes literature for public education and vocational training throughout South America. In addition, the Indian Institute of Technology at Kanpur has published the IAEE Guidelines for Earthquake Resistant Non-Engineered Construction, which is available in PDF form free of charge at the IIT Kanpur National Information Centre of Earthquake Engineering website. A 2011 draft update of these guidelines is also available from the International Institute of Seismology and Earthquake Engineering in Japan. Such guidelines embody low-cost, effective approaches for building safe earthen structures.

  7. Researchers have studied the challenge of reinforcing and retrofitting existing earthen structures which have historical significance. Recommended retrofit practices are emerging. Many of these retrofit practices involve addition of bamboo reinforcement to the exterior surfaces of earth walls, both outside and inside an earthen structure, in order to spread forces and stresses so that they don't result in concentrated failure at one point.

Many more facts could be gleaned from the available literature, but unfortunately, I am out of time. However, a list of references and cited works is included at the end of this post. Enjoy!

Additional References And Resources:

  1. Seismic Behavior and Rehabilitation Alternatives for Adobe and Rammed Earth Buildings,” Luis. E. Yamin, Camilo A. Phillips, Juan C. Reyes, Daniel M. Ruiz, 13th World Conference on Earthquake Engineering, 2004.

  2. Modern and historic earth buildings: Observations of the 4th September 2010 Darfield Earthquake,” H.W. Morris, 9th Pacific Conference on Earthquake Engineering – Building and Earthquake-Resilient Society, April 2011.

  3. Non-Engineered Construction In Developing Countries – An Approach Toward Earthquake Risk Reduction,” Anand S. Arya, 12WCEE 2000, Ministry of Urban Development, Government of India.

  4. Review of Non-Engineered Houses in Latin America with Reference to Building Practices and Self-Construction Projects,” Aikaterini Papanikolaou, Fabio Taucer, European Commission Joint Research Centre, 2004.

  5. Seismic Performance of Mud Brick Structures,” Joseph Hardwick and Jonathan Little, University of Bristol, EWB-UK National Research Conference 2010 and Engineers Without Borders UK, 2010.

  6. Low-Cost and Low-Tech Reinforcement Systems for Improved Earthquake Resistance of Mud Brick Buildings,” Dominic M. Dowling and Bijan Samali, The Getty Institute.

  7. Assessing the Anisotropy of Rammed Earth,” Quoc-Bao Bui, Jean-Claude Morel, 11th International Conference on Non-Conventional Materials and Technologies, 2009.

  8. Planning and Engineering Guidelines for the Seismic Retrofitting of Historic Adobe Structures,” E. Leroy Tolles, Edna E. Kimbro, William S. Ginell, The Getty Institute, 2002.

  9. An Improved Means of Reinforcing Adobe Walls – External Vertical Reinforcement,” Dominic Dowling, Bijan Samali, Jianchun Li, SismoAdobe 2005, Lima, Peru.

  10. Earthquake Resistant Rammed-Earth (Taipal) Buildings,” J. Vargas, Catholic University of Peru.

Monday, February 28, 2011

The Development of Post-Peak Best Practices

In the First World, there is a body of knowledge, practices, and wisdom for living in modern society as it has existed for the last several decades, and as many optimistic thinkers believe society might continue to exist for the foreseeable future. This body of received wisdom is predicated on the assumption that modern society and its inhabitants will always have access to ever-increasing quantities of energy, resources and wealth.

Yet there have been those who are willing to look beneath surface appearances in order to question the foundations on which modern First World society rests. Many of these thinkers have come to conclusions that differ drastically from the future which is envisioned by the optimists. From the darker and less cheerful thoughts and writings of these people a different body of knowledge, practices and wisdom is arising. Whereas the wisdom of the optimists is based on a future of ever-increasing abundance, the darker wisdom of the realists is based on the likelihood that most of us will have to live on much less, in a world that is a lot less comfortable and predictable than the world we have been used to until very recently.

There is one thing that can be said for the wisdom of the optimists. That wisdom and its body of techniques has been extensively documented, codified and taught until it has taken on the air of unquestionable truth. Thus most people believe that whether you're building a house, treating an infection, or dealing with waste management in a city, there's only one right way to do it – and even though that right way is based on techniques that require a lot of resources and energy, this is not an issue, “because we live in America, and we are a rich country!” In other words, most of us in the First World believe that our society has created the best possible practices for living together as a society and meeting the needs of society.

The wisdom of the dark realists has not been nearly so well documented, codified or taught. This is the reason for the angst many of us feel at the realization that the foundations of First World society are starting to crumble, its resource base is depleting, its wealth is dwindling, its wells are running dry. The realization of these things naturally provokes the questions, “So what do we do? How do we adapt?” It's unnerving to realize not only that the world is changing in ways we hadn't counted on, but that we have to create an adaptive strategy seemingly from scratch.

To be sure, some great work has already been done in formulating adaptive strategies. I am thinking of a guy named John Michael Greer whose blog has lately been describing a number of low-tech adaptive strategies for post-Peak living. (By the way, I don't necessarily agree with everything Mr. Greer says on his blog – but then again, I don't always agree with everything I say either. ;)) Mr. Greer's work is in turn based on the writings of many people who were part of the back-to-the-land movements in the 1960's and 1970's, and who did extensive, rigorous research on low-tech, low-impact living. I also think of Joseph Jenkins and his Humanure Handbook, a book that describes a safe, low-tech method of recycling human waste into fertilizer. The interesting thing about Mr. Jenkins' book is that although it is written in a humorous, colloquial style, it actually began as his masters' thesis. Therefore he treats his subject with rigor and technical accuracy.

What is needed now is more work of that kind, extended across many different disciplines, from health care to education, from small-scale manufacturing to building design and construction, and more. The trouble with many suggested post-Peak practices is that they are not very well documented, and seem to be sold more on the basis of emotion or symbolism than on the basis of whether or not they actually work.

I am thinking of one example in particular, that of earth construction. I have a copy of the Barefoot Architect by Johan van Lengen. It's a fascinating book based on a fascinating premise – namely, that one can create a useful guide for home construction for Third World residents based on the use of vernacular methods and materials. It's obvious that such a book would be useful for many depressed and declining parts of the First World as well. The only problem I have with the book is that it seems to be lacking in describing mathematical techniques for validating key elements of building design. Where math is mentioned, it is sometimes treated in a cavalier manner – almost as if it was optional. (An example: on page 400, Mr. van Lengen describes the construction of earthquake-resistant walls, then says, “For those who like equations...” before writing a very simple formula. It's as if he's implying that you don't need to know the math behind constructing an earthquake-resistant wall in order to actually build one.)

The same criticism can be leveled against some people in the Portland metro area who offer classes in “cob building.” None of these teachers has a degree in civil engineering, nor are any of them registered structural engineers. Almost all of them look like people who should be wearing tie-dyed T-shirts and Birkenstocks, people who will tell you that you should build with earth because it's “natural” and “wholistic.”

Now just for the record, I believe that earth construction has great potential as a building technique of the near future, due to the wide availability of earth, the simplicity of construction methods, and the extremely low environmental impact of earth construction. But if someone's going to build an earth house for me, I want it done right – and I want to know that it's been done right. (We live in Seismic Zone 3 around here.) Otherwise, I might never be able to get to sleep in my brand new earth house, or alternatively, I might be terrorized by nightmares about my house falling down on me.

Earth construction is just one example of the sort of post-Peak techniques and practices that need to be developed much more rigorously and with much greater technical accuracy. There are others, such as post-Peak (plant-based) pharmacology and post-Peak general medicine. A robust, reliable post-Peak medical practice should be well-researched, evidence-based, with proven results. (I am not a fan of modern First World medicine, but whenever I hear someone say “I reject Western Medicine. Instead, I take bee propolys and colloidal silver and I meditate for three hours under the full moon at least three times a month,” my ears shut off instantly. Some of you know what sort of person I'm talking about.)

I could go on listing examples of disciplines that need more rigorous treatment, but I'm sure you all can think of a few. I'd like to close with a few things I think are needed in creating a body of post-Peak knowledge, skills and practices.

First and foremost, such a body of knowledge must be open. That is, it must not be subject to copyright restrictions, not made into the “intellectual property” handmaiden of a bunch of rent-seekers. (This, by the way, is quite contrary to the foolish and greedy choice recently made by Jules Dervaes and his family to attempt to claim ownership of the English language phrase “urban homestead.”) Secondly, such a body of knowledge must be peer-reviewed by its users and practitioners. That peer-review must be done with rigor, according to established rules of inquiry. (Scientific method, anyone?) Thirdly, such a body of knowledge must be taught by those who have demonstrated mastery of its disciplines. Such an approach would make people more willing to accept this knowledge readily, as proven knowledge.

Mind you, this post is not a “policy paper,” but rather a suggestion – for those who are willing to do the hard work of developing a knowledge base of post-Peak practices.

Saturday, January 9, 2010

An Adaptor's Reading List

Over the last year I've picked up enough reading material to choke a horse. I guess my New Year's resolution will be to schedule enough time to read it all. Most of it serves the very useful purpose of equipping readers to adapt to the present and ongoing collapse of the Western industrial economy. (However, none of it is about how to reload your own ammo, where to find the best site for a bunker, buying gold, or the best brand of baked beans to stockpile in a mountain hideaway.) Some of it is in hard copy and some of it I downloaded for free from the Web. Here's a short list of some titles that stick out immediately:

The Humanure Handbook, Joseph Jenkins, Jenkins Publishing, 2005. This is a good book for learning why our present industrial Western system of human waste management is unsustainable, how this system is contributing to impending worldwide shortages of fresh water, and what individuals can do about it. I got a paperback copy for myself and I am about halfway through it. I also downloaded a free PDF copy from Joseph Jenkins' website.

Decentralised Composting for Cities of Low- and Middle-Income Countries: A Users' Manual, Eawag/Sandec and Waste Concern, 2006. This publication is available as a free PDF download from the Eawag webpage “Department Water and Sanitation in Developing Countries,” along with a number of other publications. I just started this one. (I'm up to page ten.) While I like Joseph Jenkins' approach to humanure composting, I am always impressed with the potential of ordinary humans to foul something up. The problem is not in Jenkins' method, but in the incompetence of some people I know (who might also say the same thing about me ;) ).The Eawag/Sandec publication seems to be a good way to insure that the composting process is put into trained and competent hands, even at the neighborhood level.

Where There Is No Doctor, David Werner, Hesperian Foundation, 1992. I downloaded this one for free from the Hesperian website as well as picking up a used paperback copy from a bookstore. We've been going through Chapter 11 of this book at work, during my “Neighborhood Resilience Brown Bag Lunches.” My paperback copy has a slightly musty smell, as if it spent a lot of time in someone's backpack in the tropics. Nothing like having something well broken in by the time you get to use it! I also downloaded a PDF chapter out of Where There Is No Dentist.

The Barefoot Architect, Johan van Lengen, Shelter Publications, 2008. I ordered a paperback copy of this book from Hesperian. I was surprised by how thick it is. So far I've barely had time to scratch the surface of the book. But to get some idea of how useful it actually is, I brought it in to work recently and gave it to an architect friend of mine to check out. (I also wrote my name all over it, just to make sure I get it back ;) )He and his colleagues seemed quite impressed. Looks like it's a keeper.

Setting Up Community Health Programmes, Ted Lankester, Hesperian Foundation, 2009. I ordered a paperback copy. This one was also surprisingly thick. I've only had time to lightly peruse it. I saw one rather unnerving section on setting up private health insurance plans in developing countries. I didn't have time to really dig in and see what Mr. Lankester was advocating, so I am holding off judgment on that section for now.

All of these books present simple, low-cost solutions and methods for individuals and communities to meet basic needs for sanitation, shelter and health. These books definitely strive to avoid high-cost, technologically complex, energy-intensive methodologies. They are suitable for poorer people in the Third World. And I suspect that as the glamor and notional wealth evaporates from the societies of the First World, we will see how applicable these resources are to us as well. Already I believe there are municipalities in the U.S. which can no longer afford complex wastewater treatment, or which are facing rate increases due to privatization of wastewater treatment. (See America's clean water systems and “State's wastewater treatment facilities have problems on tap due to declining revenue” for instance.) As I read these books and resources, I may dedicate a post to a more detailed review of each publication.

If anyone has other books or resources they'd like to recommend (or further comments on the books I have listed), feel free to send me a comment. Next week, I hope to have a useful and interesting interview for you all. I also have a new series of articles in the works. Thanks for reading and have a good week!

Saturday, November 14, 2009

A Place In Fabland?

Several months ago, I wrote a series of posts discussing small-scale manufacturing as part of a strategy of adaptation to economic collapse due to Peak Oil. My position then was that small-scale manufacturing would primarily be employed to make the simple low-tech tools needed for a much simpler life. In this role, it would enable us to continue to have reasonable access to things such as hand tools and bicycles. I had not seriously considered small-scale manufacturing as a means of maintaining widespread access to the gadgets that define modern life in advanced industrial society. But that was before I knew much about the global community of “fabbers.” As I wrote my earlier series, I devoted a small amount of space to the fabber phenomenon, but I didn't have time to do it justice. A couple of news articles over the last month have caused me to turn back again for a more complete exploration of this subject.

According to Wikipedia, a digital fabricator (also known as a “fabber” or “fab”) is basically a “small, self-contained factory that can make objects described by digital data.” According to many enthusiasts, fabbers have great potential for democratization of the means of production in industrial society. This is because of the following advances:

  • The invention of small, inexpensive machines capable of producing three-dimensional parts

  • The digital definition of three-dimensional part manufacture as an act of three-dimensional printing

  • Increases in computational power of consumer electronics, including PC's and printers

  • And lastly, the invention and widespread availability of new materials that can be easily formed, machined and “printed” into parts, in ordinary, non-clean room environments.

All of these things are now being combined into machines that promise to do for manufacturing what cheap and powerful consumer electronics have done for media. As powerful and inexpensive consumer electronics have combined with the Internet to turn everyone into a potential creator of entertainment or news or art, so the digital fabber revolution promises to turn everyone into a potential creator of useful manufactured goods. Just as the consumer electronics revolution has weakened the power of traditional producers of media, so the fabber revolution has the power to displace traditional, capital-intensive, large-scale manufacture of goods.

Thus some fabber enthusiasts tout these machines as technological miracles that will enable every garage to be a high-tech small-scale manufacturer of high-tech products. These devices are put forward as the definitive answer to our present economic collapse, and the key to continued prosperity over the long haul. But are they all these things after all? Are they any of these things? If fabbers are the miracle that their enthusiasts claim, this leads to a near-term future that potentially looks quite different from the darker future of enforced simplicity and technological retreat envisioned by many collapse-watchers.

What role will the fabber revolution play in the near-term future of industrial society, particularly in the First World? How will the fulfillment of that role affect our society farther on, over the next several centuries? Do fabbers have the potential to preserve widespread access to highly advanced manufactured goods? Or are there limits on all advanced industrial activity that ensure a collapse of industrial society? I'm sure that everyone has their own, instinctive, gut-level answer to these questions. Yet such gut-level responses must be examined to determine whether they are fact-based or merely faith (or sometimes, wish) based.

I don't know that I will be able to offer a definitive answer to these questions. But I thought a good starting point would be to lay out what we already know about fabbers, and to put forth pertinent questions that would have to be answered in order to accurately define the true potential of fabbers in dealing with our present collapse. My observations and pertinent questions are listed below, in outline form:

  1. What can fabbers make now? (These are things whose manufacture has been reliably and repeatedly demonstrated.)

  • Gross machine parts made of plastic and some metals

  • Rudimentary control components, such as “printed circuits”

  • Objects d'art

  1. What things can fabbers not make now?

  • Ultrapure microelectronic substrates (that is, substrates made from inorganic materials like silicon)

  • Inorganic microelectronic circuits (maybe a fabber will be developed that can do this, but it requires creating ultrapure “clean room” conditions inside the average Joe's garage)

  • Other fabbers. (They can make most of the machine tool parts, but they can't yet make the microelectronics used in control of fabbers.)

  • Note: if fabbers are only practically useful when they have great computing power (needed for rapidly fabricating complex parts in 3D), then one won't be able to use a fabber to build another fabber until a fabber can also produce all of its own control circuitry and microprocessors.

  1. What will fabbers will need in order to be self-replicating (or build their own replacements), with present-generation computational abilities?

  • Feedstocks of ultrapure materials

  • A source of electric energy

  1. Ultrapure inorganic materials as a restricting condition

  • Energy, Silicon and the Siemens process (and other processes). (All processes now used for purifying silicon and associated dopants, and combining these materials into appropriate semiconductors, require large amounts of energy. As access to fossil-fuel energy declines, these processes will become increasingly expensive.)

  • Other microelectronic ingredients, like dopants, are increasingly scarce

  • Less-pure forms of these materials are less and less remarkable, until in the limit, they are no more remarkable than the natural states of these materials. Useless for high-speed electronics below a certain level of purity. (Example: a galena crystal, commonly found in nature, can be used to build a crude AM radio receiver. But it takes much purer materials to build high-speed, high-performance microelectronics.)

  • If energy is the limiting factor in producing these materials, energy is a limiting factor in a “fabber” revolution.

  • Has any work been done in recycling microelectronics, beyond simply reclaiming the metals used in them? What is the energy cost in extracting and re-purifying the silicon, metals, dopants contained in an IC or larger chip?

  1. Question: In a resource-constrained future, can suitably fast microelectronics be printed using less exotic materials? Can these be easily programmed to provide the sort of production control currently exercised by the electronics in today's fabbers?

  • Answer: polymeric organic semiconductor materials are being developed for use in possible thin-film, printable microelectronics.

  • Transistors and integrated circuits have been made with these organic semiconductors. How fast can they be made to operate? Current silicon-based MOSFET's can be switched at speeds well over 1 GHz (one billion cycles per second). Can organic transistors and microcircuits be made as fast? At present, they are not. (Circuit speed is a factor in processor speed, and thus in the speed with which a fabber controlled by such a circuit can turn out complex parts.)

  • Are there impending resource limits on organic semiconductors?

6. In the spirit of the Precautionary Principle, are there any moral or ethical or other downsides to the fabber revolution? Are there potential negative outcomes or uses of this technology that haven't been widely forseen?

Anyway, those are the points for consideration that I was able to think of in a short time. Over the next several weeks, I may try to take a stab at a few of them, as time allows. Unfortunately, time doesn't allow this weekend, as I worked a bit extra on Friday and I have to go in again tomorrow for a few hours. If anyone else wants to take a stab at tackling these questions, feel free.

For further reading, check out these links:

Saturday, May 16, 2009

Ecomotion Movin' On...

I regret to inform you of the passing of a uniquely Portland business with a uniquely Portland flavor. No, it isn't one of our unique locally-owned bookstores, nor is it one of our unique bicycle shops, shops that are light-years ahead of the rest of the nation when it comes to really “getting” the concept of the bike as basic transportation. Rather, it's Ecomotion, a seller of electric vehicles that is now going out of business.

I used to pass Ecomotion's showroom many times on the way to work as I rode my bike down Sandy Boulevard in the early morning en route to the bus stop on the other side of the river. The sight of the place provoked much curiosity and many questions in my mind, the chief of which was, “Who's buying these things, anyway?” My curiosity was again aroused when I saw the “GOING OUT OF BUSINESS” signs on the windows a couple of months ago. These signs appeared at a time during which many observers were noticing the links between the collapse of the economy and the drying up of investment in “green” technologies. This was also less than six months after gasoline and oil prices fell to levels not seen in over four years.

I try to never pass up a good story. I also wondered whether economic collapse and the collapse of oil prices had anything to do with Ecomotion's demise, and I decided to find out. It took several tries, but I was at last able to secure time for a short, rapid-fire interview with the manager one Friday afternoon a few weeks ago. The interview took place as the employees were liquidating the furniture and fixtures. Below are my questions (in bold type), and his answers.

Why did Ecomotion fail? Ecomotion is an authorized dealer for ZAP Electric Vehicles. Gas prices were over $4 a gallon during much of last year. This drove demand for alternatives such as electric cars to such an extent that Ecomotion sold out all its inventory in June. They therefore ordered many new vehicles, but ZAP's manufacturing base was in China. Unfortunately, their China supply line was slow to deliver, so their new vehicles didn't arrive until October 2008. By then gas prices were under $2 a gallon, causing electric vehicle sales to drop off a cliff. In the early months of 2009, the owner of Ecomotion decided to call it quits. The ZAP vehicles are not suitable for highway speeds – not quite right yet – nor do they possess a range of at least 100 miles, which many consider the minimum range for an electric car to act as a practical alternative to cars driven by internal combustion.

There are other, smaller ZAP dealers that are a bit more successful, due to their ability to cheaply modify the vehicles for increased range and speed. Ecomotion did not have the staff for these modifications. Also, they had leased a large building with the goal of becoming the largest electric vehicle (EV) emporium in the United States. But the large building made for high overhead costs.

Regarding our present economic and energy challenges, what advice do you have for our nation? If we're seriously going to invest in alternatives to gasoline-powered cars, let's do it right. So much of what we try in the name of “alternatives” seems deliberately wrong and designed to fail. A case in point: A couple of Pacific Northwest utilities have begun installing charging stations for EV's in the Portland metro area. But the chargers are supplied at 110 volts and require 8 hours to deliver a full recharge. A Chinese company named BYD is supposedly developing a “dual mode” car that will go 100 miles before recharge, as well as a charging station that can accept three levels of input voltage, and can charge a car in 15 minutes. The local utilities don't seem interested in looking into such chargers.

How do you feel about your experience with trying to sell electric cars? Is there a bit of frustration at how it all turned out? There's definitely frustration, but also a sense of accomplishment at having played a role in trying to make the world a better place. The frustration is the main thing. Why the frustration? Ecomotion was promised many things by ZAP, things that didn't happen, such as an electric SUV with a 300-mile range. The staff at Ecomotion feel a bit like they've been hung out to dry.

What will the American energy and transportation scene look like in the next 18 months? Not much will change. We'll still be relying primarily on gas-powered cars. If we want to see a real change, what's needed is a change in how we drive as well as dedicated EV car lanes, due to the limits on speed and power of EV's.

Do Americans need to change what they want? Should we learn to want less? No. The problem does not lie in what we want. Most Americans would be happy with a mid sized sedan that was electric, so we wouldn't have to send our kids to fight for oil.

* * *

With that last question, the interview was over. As I did further research on Ecomotion and on ZAP cars, I found a few troubling trends that seemed typical of some players in the EV industry. First, Ecomotion is hardly the first ZAP car dealer to go out of business (or get “ZAPPED”). The failure of ZAP dealers is actually rather common, and has a lot less to do with our broader economic troubles than with the way the company is run. A recent article in Wired Magazine described how the company attracts potential investors with promises of “cutting-edge” new electric vehicles that are so good that they will practically sell themselves. The problem is that these vehicles are always “just around the corner” – they never actually show up. The ZAP vehicles that actually make it to dealer showrooms are clunky, poorly made and extremely limited in power and range (think 17 to 20 miles on a charge). There is also the shady nature of the agreements dealers are required to sign in order to sell ZAP cars. (If one reads the Wired magazine account, one gets the impression that the chief executives of ZAP are sociopaths.)

There seems to be a trend among some in the EV industry of promising unbelievable cars with performance too good to be true, and coming to your doorstep one day very soon. In addition to ZAP, BYD, the Chinese company mentioned earlier, has also been promising “environmentally-friendly” cars with all the power and luxury of gasoline-powered cars. Yet their promised vehicles don't always arrive as promised. One model that actually exists, the FD3M, is touted as having an all-electric range of 60 miles and a top speed of 93 miles per hour. But at least one source states that the 60-mile all-electric range only holds true if the car is driven at less than 30 miles an hour. BYD (short for Build Your Dreams) claims to have sold several dozen of these cars, yet the car itself won't be mass-produced until 2010.

The biggest problem with the EV industry extends beyond the industry to our society in general. EV's are slower and more limited in performance than gasoline-powered cars. This is a fact of life that's not likely to change anytime soon, and we must face this fact. If you're going to rely on an EV as primary transportation, you'll have to change your lifestyle. Period. Even if this situation changes, EV's are not the environmental panacea that their promoters claim. They still require fossil fuels to run, because our electricity is generated by plants that run on fossil fuels. Steam turboalternators of the kind found in a coal or natural gas-fired generating plant produce electricity at a final efficiency very similar to the efficiency of any other heat engine – including gasoline and diesel engines. Then there are the transmission losses arising from sending the electricity from its source to its point of use. In this regard, EV's don't really solve anything. If we try to run EV's entirely on renewable and sustainable sources of energy, we will have to settle for a lot less than what we've been used to with gasoline and diesel engines.

This – learning to settle for less – is actually the key to successful adaptation to the times now upon us. Yet this is something that our society fights tooth and nail. So we wish and long for some techno-breakthrough that will allow us to live guilt-free in the luxury and ease to which we have become accustomed. One of my acquaintances always talks about how in driving his Prius, he's doing his part to save the planet and adapt to scarcity. The very way he pronounces the word is almost reverential – “driving a Prius.” He thoroughly rejects the notion that he might have to radically downsize his life very soon. He is typical of Americans who say, “I am getting fat because I eat ten pounds of French fries every day. But I have a solution: scientifically engineered low-fat French fries!”

Our unwillingness to consider living on less, and our longing for technological solutions to scarcity issues makes many of us suckers for hyped supercars and other things that will allow us to “save the earth” while maintaining our extravagant lifestyles. But reining in our lifestyles is the best thing we can do right now – we don't have to “send our kids off to fight for oil,” nor do we need some cutting-edge electric car breakthrough.

For Further Reading:

Saturday, February 14, 2009

Small-Scale Manufacturing - The Japanese Example, And A Few Last Comments

The issues now being faced by the members of our modern society are so serious that a proper discussion of these issues must include a healthy discussion of practical answers to practical problems. Mere theorizing or philosophizing won't do – although it certainly is entertaining sometimes. The search for practical examples has led me to study case histories of the use of small-scale manufacturing in various countries. Japan is one such country, and it was the subject of a report titled, The Japanese Experience In Technology, authored by Takeshi Hayashi of the United Nations University, and published in 1990. (The entire report can be found here: http://www.unu.edu/unupress/unupbooks/uu36je/uu36je00.htm#Contents.)

The Japanese Experience report shares a motivation and point of view typical of many reports written over the years on appropriate technology and small-scale industry deployment in the developing world. That point of view is the study of appropriate technology and small-scale industry in helping Third World nations achieve a higher level of “development,” i.e., similarity to modern First World society. In other words, the goal of such studies is to help devise strategies for “modernizing” these nations. Thus the citizens of these nations are judged according to how receptive they are to complex First World technology, how adaptible their indigenous small-scale technologies are to First World economic goals, and the ability of small-scale manufacturers in these countries to participate in and compete in a modern, interconnected, global economy. This First World bias is also seen in the way these studies judge indigenous small-scale enterprise according to the First World criterion of “efficiency” – maximum production with maximum profits and minimum cost per unit of production.

It is all but certain that we in the First World are facing a future of economic contraction, of simplification, of a return to a lower standard of living, due to economic collapse, resource shortages and environmental degradation. The studies mentioned above regarding small-scale industry might not therefore seem obviously useful in showing members of an advanced society the strategies and paths for preparing for the future we now face. Yet by reading between the lines and looking at the data in some unexpected ways, we can learn much.

First, the good news: According to the Japanese Experience report, small-scale industries assumed an increasingly prominent role in Japanese gross domestic product after the oil shocks of the 1970's. These oil shocks, along with increasing competition between producers, drove a number of large-scale factories out of business, and “...transformed the mass production system into a system producing high-quality goods in small quantities to meet market needs and to diversify risks.” Secondly, Japanese small-scale factories (with 20 or fewer workers) accounted for 87.3 percent of all Japanese factories in 1980. They employed 20.1 percent of all workers and contributed 12.6 percent of the total national output. Factories with fewer than 100 workers made up 98 percent of all Japanese factories, and employed 58 percent of all workers.

Small-scale industries in Japan also rapidly adopted modern urban industrial technology, aiding their competitiveness in international markets. Workers who mastered key components of an industrial process employed by a large manufacturer were in many cases able to go into business for themselves as subcontractors to their former employers, providing the materials or semi-finished goods produced by the process component they mastered. As the technical understanding of these workers increased and they were able to afford more complex technology, so the range of parts and base components that they could offer to larger manufacturers also increased.

In short, Japan had a long tradition of traditional, small-scale craft industry, which became the small-scale industrial foundation of Japan's 20th Century modernization. Japanese small-scale manufacturing has been proven to be a most fitting means of providing desired goods to customers without overproduction and waste – a very important characteristic in an era like the one we are now facing, an era of scarce resources and high costs. Moreover, Japan retained its small-scale manufacturing tradition and culture until 1990 at the very least.

But now for the not-so-good news. Japan's culture of small-scale manufacturing has not been immune to the effects of globalism. The removal of trade barriers and the global spread of neoliberal economics has meant the outsourcing and shrinkage of Japan's manufacturing base. In much the same way that cities like Detroit are typical of American deindustrialization, Japanese cities that were manufacturing powerhouses are now shrinking, as noted in a paper titled, “City Shrinkage Issues In Japan” by Yasuyuki Fujii. (Source: http://www.mizuho-ir.co.jp/english/knowledge/shrinkage0405.html) And according to the 2009 online edition of the CIA World Factbook, only 27.9 percent of Japan's labor force works in industry at present.

Japan is thus losing a key component of self-sufficiency. As with other First World nations, the largest sector of the labor force is now the service sector. As the global economy continues to collapse, the value of the “service industry” will diminish in a very obvious way, and the demand for necessary, useful, “made-at-home” physical goods will rebound. Hopefully, the Japanese will have retained enough knowledge of their small-scale craft-industry tradition to revive that tradition when it becomes needed again.

And now for a few last comments on small-scale manufacturing and appropriate technology. I think it's fairly obvious to most people by now that the First World is facing a drastic change of lifestyle due to economic shrinkage and resource depletion. It's also becoming obvious to many that we can't “fix” the global economy so that it starts growing again, nor can we invent some technological fix that will enable us to enjoy lifestyles of continually increasing consumption. Small-scale industry and appropriate technology should be viewed as aids in adapting gracefully to a poorer future, and not as a means of escaping that future.

But there has been a great deal of talk in the blogosphere lately concerning the miniaturization of complex industrial processes. In an earlier post I mentioned the Fab@Home wiki (http://fabathome.org/), a site dedicated to development of desktop-sized computer-aided manufacturing devices (“fabs”) that can “print” 3-dimensional objects. These devices can be built from scratch for as little as $300, and there are those who say that such devices can be set up to reproduce themselves – even down to the level of reproducing the computer circuitry (CPU) that guides the workings of a fab. Alternatively, there are those (like this source: http://future.wikia.com/wiki/Desktop_Semiconductor_Foundry) who predict the development of desktop-sized semiconductor foundries as early as 2010. This is important, because of the major role that microelectronics plays in everyday life in our society. Those who talk of these things speak excitedly of how such devices will allow communities in First World cities to become resilient and self-reliant once again by manufacturing their own goods, and how this will aid us in our quest for an ever-rising standard of living, even as we face issues like declining resources.

I have a different view. I see an upcoming limit to human advancement in microelectronics, a limit dictated by declining energy supplies. For while it is true that final fabrication of highly complex, miniature integrated circuits can be shrunk to a process that fits on a desktop, it is also true that producing the blank silicon wafers that are the feedstock of such a fabrication still requires enormous amounts of energy. Silicon is derived from sand, which is silicon dioxide. The silicon and oxygen atoms in silicon dioxide are held together by very energetic bonds which require a lot of energy to break if one wants to obtain pure silicon. The first step therefore is to melt sand by heating to a temperature of over 3000 degrees F in the presence of carbon. Then the resulting silicon is refined further. Among the processes for this second-stage refining is the Siemens process, which requires heating silicon to a temperature of 2102 degrees F, although newer processes have been invented which run at lower temperature. Still, the refining of electronics-grade silicon is very energy-intensive.

If ready availability of complex microelectronic devices is an indicator of a society's level of technological advancement, I see a time in which our advancement will go into reverse. For as fossil-fuel availability declines, so will the energy available for manufacture of energy-intensive products such as ultrapure silicon. This means a decline of availability of devices that are controlled by complex microelectronics, such as...desktop fabs. Either such devices will become increasingly unavailable to the general public as time passes, or they will become rapidly more expensive, or both. A time may come in which only a select few have access to the latest and greatest computerized manufacturing technology. Those of us without access to the most advanced microelectronics will be forced to rely on our wits and our skills to make things of value.

But this is just my “two cents.” If any readers have alternative insights or arguments, feel free to comment.

Saturday, February 7, 2009

Small Scale Manufacturing - Practical Resources

I had originally intended to discuss sources of practical knowledge in small-scale manufacturing at a later time. This week, however, I've been getting a lot of very good feedback from readers in the U.S. who are interested in small-scale manufacturing. Some of these people are even operating their own small-scale enterprises. So I thought I'd list the resources mentioned by these readers, in addition to listing a few other sources I have discovered.

First, there is the Open Source Machine site (http://opensourcemachine.org/), a source mentioned on another website by two posters who call themselves Fleam and Jokuhl. The Open Source Machine site is dedicated to providing potential manufacturers with small, easily-built manufacturing machines that can be made from recycled and reused parts. Plans for these machines are developed for free and published on the Web without copyright or royalty or intellectual property restrictions, so that anyone can use them. One of their projects is called the “MultiMachine,” described as “...a humanitarian, open-source machine tool project for developing countries.” The neat thing about the MultiMachine is that it provides many metalworking functions in one device that can easily be made from used vehicle engine parts. The Open Source Machine project site also has links to plans to build other machines, including plans to build an air compressor from scrap.

The Fab@Home wiki (http://fabathome.org/), contains information on buying or building desktop-sized“fabs” (computer-aided manufacturing devices) that can “print” 3-dimensional objects. Some of these fabs have been used for making watchbands, bicycle chainrings and sprockets, and bottles.

Then there is the Open Source Ecology Wiki (http://openfarmtech.org/), a site created by Marcin Jakubowski and others. Marcin has dedicated himself to advancing the field of open-source appropriate technology, and his wiki is a compilation of tools and knowledge useful to those who are trying to build safety nets to replace the present breaking economic arrangement. He also has a blog, http://openfarmtech.org/weblog/, and there is a podcast interview with him available at http://agroinnovations.com/component/option,com_mojo/Itemid,182/p,39/lang,es/.

There is also a site run by “Greg in MO,” who left a comment on my first post on this blog concerning small-scale manufacturing. He has a garage business which manufactures clothes drying racks and hand tools. He has some interesting insights on simplifying the manufacturing process so that it can be in essence, a “cottage industry.” His site is www.easydigging.com.

The Practical Action website (http://practicalaction.org) is hosted by the Practical Action group, “...a development charity with a difference,” which focuses first on development of local peoples in the Third World, then on matching appropriate technologies to their needs. They have a lot of technical information available for use, covering such topics as climate change adaptation, agriculture, construction, crop and food processing, manufacturing, information and communication, waste and recycling, and much more.

Village Earth (www.villageearth.org) is a “consortium for sustainable village-based development,” whose website also contains links to many appropriate technology resources, especially those related to small-scale industry. Payment is required to access some of their resources, however.

The AfriGadget site (www.afrigadget.com) is a blog which details the ways in which Africans are “...solving everyday problems with African ingenuity.” One post describes how an Ugandan woman made a homemade cell phone charger. Other features of this blog include its emphasis on “grassroots reporting” by Africans concerning African issues and African responses. These people are actually doing the things I detailed in an earlier post, “A Safety Net Of Alternative Systems – Citizen Media.” They also have posts on reuse of metals in the Kenyan ironworks industry, and the fabrication of hand tools.

Lastly, I would be remiss if I did not mention the work of bloggers Jeff Vail (www.jeffvail.net) and John Robb (http://globalguerrillas.typepad.com/), who examined the topic of small-scale manufacturing in great detail long before I did. (See http://www.jeffvail.net/2008/06/rhizome-platform-design.html by Jeff Vail and http://globalguerrillas.typepad.com/globalguerrillas/2008/09/resilient-com-1.html by John Robb.) Their particular focus is on the “fab” machines I mentioned above. My only concern with these machines and others is that new, ready-made machines of this type may be out of the price range of many Americans, who would be forced to build such machines from scrap and used parts if they wanted to manufacture things as these machines do – as 3-dimensional “prints”. I think, however, that I may have a solution to that concern, as follows:

There are plenty of old computers that are not being used anymore because constant “innovations” and “enhancements” to the proprietary products made by major commercial software vendors requires constant changes to the hardware people use. These “enhancements” rapidly render older machines obsolete. However, these old computers can be put back to use for a wide range of applications, if they are run using a Linux or open-source Unix operating system. They can also be programmed with open-source software to function as the controllers in a computer-aided manufacturing process. There are also old appliances being discarded even though they have perfectly good single-phase motors. The relays needed to operate such motors could be scavenged from old relay panels used with legacy programmable logic controllers that are replaced with new models in industrial plants. An enterprising tinker with a knack in computer programming and systems integration could make his own “fab” from an old computer and the motors from such things as a refrigerator, a house fan, a blow-dryer, etc. As long as the parts made by such a fab were not critical to life and limb (no cardiac stents or jet aircraft parts, for instance), the things made by such a fab would probably be perfectly adequate.

Of course, there would be the need for machine interlocks and kill switches to make the fab safe. This would not only be to meet codes and OSHA requirements, but to prevent the very real possibility of losing body parts in the works of the fab. An understanding of good machine safeguarding principles would therefore be essential. But it might be possible for someone to construct their own homemade fab for less than $1000.

Saturday, January 24, 2009

A Safety Net Of Alternative Systems - Small-Scale Manufacturing

The global, “official” economy of our modern society is breaking apart. The signs seem to indicate that the breakup is rapidly accelerating. Those who have been trained to rely wholly on that system are increasingly finding themselves in trouble, as the system is now increasingly unable to provide its two staple products – jobs (with income), and goods for consumption – to those who rely on it. Yet there is still a need for meaningful work in the making of the things necessary for everyday life. This post will introduce the role of small-scale manufacturing and industry in restoring our ability to take care of ourselves. This is an especially urgent topic for citizens of the United States, which allowed its manufacturing base to be decimated over the last few decades in the name of globalism.

The Breaking Supply Chain

The availability of goods to the typical “consumers” in industrial economies depends on a long and winding chain of supply. Over the years, the links of the chain have increasingly been held together by easy credit. Here is how it worked: business owners over the years stopped using their own savings to pay for the operation and expansion of their businesses. Instead, they took out loans to cover the costs of acquisition of new equipment, office/warehouse/industrial space, raw materials, vehicle fleets and so forth. The assumption was that they would make payments on their loans with the revenue generated by the use of the goods they bought on credit. For instance, a printing business might borrow money for paper, presses, computers, and related supplies, intending to pay the loan with some of the revenue generated by the use of these materials in the printing business.

This also extended to such things as farming, including large-scale agribusiness. Growers took out loans for seed, mechanized farm equipment and “inputs” such as fertilizer and pesticides, with the intention of making payments on those loans with some of the money received from harvesting and selling their products. And it extended to those who sold finished goods, who purchased these goods from suppliers by means of “letters of credit” issued by lending banks, and who planned to pay back these letters of credit through the commission they earned by selling the finished goods – goods such as textiles, machines, bulk cargoes, cars, tools, consumer electronics, and so on. In fact, the hugeness of the scale of economic activity for the last several years has been due to the easy and widespread availability of credit. The scale of economic activity would have been much smaller, if businesses in the official economy had been required to conduct their activities solely on the basis of their earnings and savings.

But the present economic crisis has put an end to easy credit, not only for individuals, but for businesses. Consumers, cut off from credit and hampered by stagnant wages, are not consuming anymore – at least, not like they used to. This is endangering all the other members of the supply chain, such as manufacturers who are no longer to make payments on the loans they received for their equipment, as well as retailers who bought the inventories of their stores on credit and find that they can no longer sell their merchandise like they used to. Farmers are curbing their planting due to lack of credit. Even shippers are hurting, since fewer people are hiring their ships, trucks and planes to send merchandise from producers to retailers. This is illustrated in a recent Times news article, “Commerce Becalmed Over Letters Of Credit (Source: http://business.timesonline.co.uk/tol/business/industry_sectors/banking_and_finance/article5069065.ece).”

It is not an exaggeration to say that the supply chain is breaking. The links closest to the average consumer – the retail store chains – are the most obvious sign. Circuit City, Mervyn's, Linens 'N' Things, KB Toys and Sharper Image are some of the casualties. The United States has allowed itself to become a place where people get the things they need for daily life from stores which sell products made thousands of miles away. Few people here can make the things they need anymore. But now the stores are disappearing. Retailers can no longer secure the credit to buy things made thousands of miles away. Therefore, shipping traffic has almost evaporated. Many extractors of raw materials and manufacturers of finished goods are shutting down. Some analysts estimate that within the next year or two, many things that are taken for granted in the United States may no longer be readily available – either because they are not to be found in stores, or because there are no longer stores that sell these things, or because the foreign makers of these things are demanding a much steeper price for the things made. Some of these things are things that are useful and valuable in our transition to a low-energy future – things ranging from hand tools to bicycle parts.

The Revival Of Small-Scale Industry

It is quite probable that the United States is facing an impending cutoff of many foreign-made goods, due to the worsening credit crisis. This will not only involve such luxuries as consumer electronics, but very basic tools and means of transportation, as well as other necessities. How will we obtain these necessary tools in a deindustrialized nation, a nation whose natural resource base has been largely depleted?

I believe that the answer is twofold. First, we in this country will have to get used to the idea of living with less. Second, we will have to raise up local (or hyperlocal), small-scale industries and manufacturing in order to produce the basic, necessary things we will need. The types of small-scale industries will be quite varied, as the needs of citizens in each locality will be varied; yet there are certain characteristics which will be desirable in all small-scale industries, such as:

  • The ability to produce finished goods from salvaged and recycled materials

  • The ability to make things without exposing workers to health risks

  • The ability to start business with limited financial capital and small (or no) loans

  • The ability to make things without polluting the environs in which the industries are located

  • The ability to make things using limited inputs of raw resources, energy, and technologically complex processes and machinery

It would be a mistake for anyone reading this to think of small-scale industries as the “next big business opportunity,” a way to cash in on a get-rich dream during an age of declining energy availability. Rather, as one Kenyan said during an interview on small-scale manufacturing, “Anyone who can be able to provide the basic necessities to his family ought to consider himself successful.” The goal is not profit maximization, but creating security for oneself, one's family, and one's community.

The Third World Pioneers

Much of the work done in starting, running, analyzing, and formulating policy regarding small-scale industries has been done by the citizens of the Third World, who for years have relied on these industries for a large portion of their gross domestic product. Several countries have created formal government ministries to promote and measure the progress of their indigenous small-scale enterprises. Among these are the government of India, which created the Ministry of Micro, Small and Medium Enterprises (formerly the Ministry of Agro and Rural Industries, and the Ministry of Small Scale Industries), and which has entered into agreements with several other countries, including Tunisia, Mexico, Rwanda, and Romania to further the development of small-scale enterprises. Small-scale industries have been extensively studied in Kenya, where researchers have suggested ways to integrate these industries symbiotically into the official Kenyan economy, providing the owners of small-scale enterprises with needed government favor and aid.

Small-scale industries in the Third World have arisen due to a combination of factors, including the existence of a long tradition of craft laborers who were present before the invasion of Third World cultures by the West, as well as the desire of many Westerners and some Third World citizens to “help” the Third World climb out of a supposedly backward existence into Western prosperity. Small-scale enterprises in the Third World have been hurt, however, by globalization, trade liberalization, and free-market policies forced on Third World governments by First World institutions. In addition, the large-scale industrialization of the Third World has been hampered by the exploitation of Third World energy and mineral resources by First World nations.

But now, as the availability of all sorts of natural resources worldwide peaks and begins to decline, the large-scale methods and technologies of the First World are becoming increasingly untenable, and the small-scale approach implemented by Third World citizens is becoming ever-more relevant. This small-scale approach may be the key to the United States quickly regaining its ability to provide basic tools and goods for itself. I shall examine the implementation of small-scale industries in specific countries in a later post.

Additional Sources:

Regarding Shipping:

Regarding Retail And Agriculture:

Regarding Small-Scale Industries: