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Green Roofs

“Choosing an environmentally responsible roofing material can be one of the greatest challenges of green building. Roofing materials tend to be expensive, damage- and failure-prone, and often contribute to demolition waste. An option which has long been popular in Europe, and is gaining increasing favor in the United States, is the vegetative-cover, or green, roof. Designing a roof with plant cover has several environmental benefits. It can reduce rooftop temperature, in turn reducing building cooling costs and even preventing urban heat islands. Additionally, green roofs are an important tool in stormwater management, because they prevent runoff. Finally, plant-covered roofs can play a role in providing urban habitat for songbirds and butterflies, and in improving air quality.”

From the U.S. Department of Energy.

So what exactly is a green roof?

Linda Velazquez writes by email that “a traditional roof garden is a roof deck (concrete, wood, etc.) with potted plants in various types of free standing containers,” while green roof is an extension of the existing roof which involves a special root repelling membrane, a drainage system, a lightweight growing medium, and plants.

“All the green roof component layers cover the entire roof deck surface. Specifically, the roof deck, insulation, waterproofing membrane(s), root resistant layer, drainage, non-woven filter fabric, engineered soil mix, plants (and sometimes a biodegradable erosion control blanket). So, the entire deck has unimpeded drainage over the entire roof, and the weight of soil and plants is more evenly distributed over the entire roof. And the plants are planted directly into the soil, which in effect, looks like the roof deck.

And there will be a few additional layers (protection, vapor barrier board, etc.) that are applied over an intensive green roof system, as the soil depths are deeper, weights are greater, etc. You can also add architectural accents, like paths, arbors, fountains, etc., but these are built onto the roof deck before the layers are put on the roof deck.”

In an article on green roofs, Katrin Scholz-Barth writes:

There are two distinctly different types of green roofs: intensive and extensive. Intensive green roofs require a minimum of one foot of soil depth to create a more traditional roof garden, with large trees, shrubs and other manicured landscapes. They are multi-layer constructions with elaborate irrigation and drainage systems. Intensive green roofs add considerable load (from 80 to 150 pounds per square foot) to a structure and require intensive maintenance. These roof gardens are, however, designed to be accessible and are used as parks or building amenities.

In contrast, extensive green roofs range from as little as 1 to 5 inches in soil depth. Depending on the soil depth and type of substrate, loads can vary from 15 lbs/sf to 50 lbs/sf. For instance, historic green roofs in Berlin, Germany, built around 1900, weigh about 42 lbs/sf. Extensive green roofs are not designed for public use but can be accessed for routine maintenance walks, generally performed once per year. Extensive green roofs are primarily built for their environmental benefits.

Although everything from earth-bermed [partially underground] houses to balconies with potted plants has conveniently been termed a ‘green roof’ at one point or another, this article strictly defines extensive green roofs as elevated roof surfaces that are entirely covered with a thin soil and vegetation layer. They are not necessarily sod or grass roofs... Additionally, the term eco-roofs is not used in this context because products such as wood shingles are also made of natural, renewable materials, and would thus qualify as an eco-roof.

Green roofs can create recreational space while simultaneously address urban environmental issues like smog, climate change, stormwater management, and energy conservation, though there is the additional upfront expense for builders. Europe is far ahead of the U.S. Green Roofs for Healthy Cities:

“In North America, the benefits of green roof technologies are poorly understood and the market remains immature, despite the efforts of several industry leaders. In Europe however, these technologies have become very well established. This has been the direct result of government legislative and financial support, at both the state and municipal level. Such support recognizes the many tangible and intangible public benefits of green roofs. This support has led to the creation of a vibrant, multi-million dollar market for green roof products and services in Germany, France, Austria and Switzerland among others.”

From City Farmer, Canada’s Office of Urban Agriculture:

“In some parts of Germany, new industrial buildings must have green roofs by law; in Swiss cities, regulations now require new construction to relocate the area of greenspace covered up by the building’s footprint to the rooftop - and even existing buildings, some hundreds of years old, must convert 20% of their roofspace to pasture.”

Green roofs also cool down urban areas in summer, saving energy. The combination of dark surfaces and less vegetation in cities creates what’s called the heat island effect:

“On warm summer days, the air in urban areas can be 6-8°F hotter than its surrounding areas. Scientists call these cities ‘urban heat islands.’ The higher temperatures in urban heat islands increases air conditioning and raises pollution levels.”

>  23 September 2002 | LINK | Filed in , , ,

Free U.S. Military Photos

Military photos in the public domain. That’s right, copyright free high-rez images of Bush & chums, fearsome gear, and our boys in action, all courtesy of the U.S. taxpayer. Great for patriotism, procurement, or parody.

Found via Barnbrook Design.

>  20 September 2002 | LINK | Filed in , ,

Coloring Books

From Common-Place Book:

“In a scheme so wacky, it could only be COINTELPRO, the FBI sent something called The Black Panther Coloring Book to families across the United States, in an effort to subvert white support for black civil rights. The drawings are fabulously blaxploitation-meets-the-revolution.

‘This coloring book, which was purported to be from the Black Panthers, had actually been rejected by them when it was brought to them by a man later revealed to have intelligence connections. Not to be troubled by the fact that the Panthers found the coloring book revolting, the FBI added even more offensive illustrations, and mass mailed it across America... [The truth was revealed] in the Congressional inquiry into COINTELPRO.’ [source]

See the pictures.

The Cunt Coloring Book by Tee Corinne was first published in 1975. It was a Judy Chicago kind of feminist gesture, became a cult favorite in the lesbian community, and in still in print. It was controversial enough on first publication for Corinne to change the title to Labia Flowers. It continues to be controversial enough to send to US Senators.

‘Last September, one of her pioneer efforts, The Cunt Coloring Book (1975), was the subject of a right-wing political attack on James Hormell’s nomination as a U.S. Ambassador. The Traditional Values Coalition sent a packet of materials (including Corinne’s book) to all 100 U.S. Senators, noting that the materials were in the collection of the Hormell Gay and Lesbian Center at the San Francisco Public Library. Her photocopied book and a pack of crayons were sent in an attempt to discredit Hormell, an openly gay man, who had helped to fund the Center.’ [source]”

Reprinted with permission.

>  12 September 2002 | LINK | Filed in , ,

Uncle Sam Wants You

>  11 September 2002 | LINK | Filed in , , ,

The Poster that Won the Election

Labour isn’t working

From The Guardian:

“The Conservative party’s 1978 poster of a snaking line of people queuing for the unemployment office under the slogan ‘Labour isn’t working’ has been voted the poster advertisement of the century [by the trade magazine Campaign].

Created by the Saatchi brothers, the poster is cited as instrumental in the downfall of James Callaghan’s Labour administration in the 1979 election and the rise of Margaret Thatcher, partly because he rose to the jibe and complained [about the poster in Parliament]. It also marked a sea-change in political advertising as, aiming at traditional Labour supporters who feared for their jobs, it was the first to adopt the aggressive marketing tactics which characterise modern elections.

The BBC has a story on the background of the Labour poster and how the photo was faked.

“News that people in the advert were ‘actors’ and not genuinely unemployed had leaked and Healed said the Conservatives were dishonest, reaching a new low by ‘selling politics like soap-powder’.

But Labour politicians were not hawk-eyed enough to spot that the basic ‘deceit’ was compounded by using the same few people over and over. Walsh had ensured that the volunteers’ faces were out of focus and could not be recognised.

Since then the tactic of putting up a deliberately controversial poster on a few bill-boards - and then reaping millions of pounds of free publicity as TV and newspapers report the fuss has become a standard and cost-effective tactic for advertisers.

When the election was delayed until the spring of 1979 the Saatchis brought out a second version of the poster with the legend ‘Labour still isn’t working’.

After the election Lord Thorneycroft, Tory party treasurer at the time, claimed that the poster had ‘won the election for the Conservatives’.”

Found via coudal partners.

>  8 September 2002 | LINK | Filed in , , , ,

Smokey, the Forest Fire Bear

“Created in 1944, the Smokey Bear campaign is the longest running public service campaign in US History. Smokey’s forest fire prevention message remained unchanged for 50 years until April 2001, when the Ad Council updated his message to address the increasing number of wildfires in the nation’s wildlands. As one of the world’s most recognizable fictional characters, Smokey’s image is protected by US Federal Law and is administered by the USDA Forest Service, the National Association of State Foresters and the Ad Council.”

The site features notes on the history and real-life inspiration for the character as well as vintage audio and imagery from the campaign. Yet, despite public education to prevent forest fires, fires have become more frequent and more severe. In fact, because of U.S. forest policy. From the U.S. Bureau of Land Management:

“Fire suppression had been the general Government policy for most of this century. A series of very destructive fires from 1871 until about 1945 had a powerful impact on the public, which was alarmed by the destruction of human life, property, and resources (like forest products and livestock food) caused by the conflagrations. The fact that loggers carelessly ignited most of these fires had little sway on public opinion. The Government policy, then, generally called for fires to be suppressed, despite the fact that as early as 1933 research was showing the absolute necessity of periodic fire for ecosystem health. This policy was effectively reinforced by the familiar icon of Smokey the Bear admonishing that ‘only you can prevent forest fires’, and by such potent images as Bambi fleeing from fire.

Yet despite determined efforts over the years to suppress naturally ignited fires, wildfires have become more numerous, severe and difficult to control. Wildland fire experts contend that this is the inevitable result of well-intended but misguided fire suppression efforts, which consequently have created vast tinderboxes in many parts of the West.

Fire ecologists say they expect many more seasons of severe wildfires because there are millions of acres that have been affected by our management actions that have not yet burned. Managers can intervene and begin restoring the natural fire regime. They have two principle tools: letting naturally-caused fires burn, and deliberately setting ‘prescribed’ fires.”

Prevention, of course, is the reason George W. Bush is easing restrictions on logging to “give loggers greater leeway to cut larger, more commercially valuable trees... and deny environmentalists legal tools they have used to block such logging.”

Smokey site found via MetaFilter.

>  3 September 2002 | LINK | Filed in , ,

Burn All GIFs

“CompuServe released [image file format format] GIF as a free and open specification in 1987. GIF soon became a world standard, and also played an important role in the internet community. It was well supported by CompuServe’s Information Service, but many developers wrote (or acquired under license) software supporting GIF without even needing to know that a company named CompuServe existed. GIF was relatively simple, and very well documented in books, articles and text files.

GIF images are compressed to reduce the file size. The technique used to compress the image data is called LZW (after Lempel-Ziv-Welch) and was first described by Terry A. Welch in the June 1984 issue of IEEE’s Computer magazine. Unisys [once a well-known computer company with a long history] holds a patent on the procedure described in the article, but the article describing the algorithm had no mention of this. The LZW procedure was simple and very well described, and it soon became a very popular technique for data compression (just as GIF would become a standard in its own field). It appears that neither CompuServe, nor the CompuServe Associate who designed GIF, nor the computer world in general were aware of the patent....

At the end of December 1994, CompuServe Inc. and Unisys Corporation announced to the public that developers would have to pay a license fee in order to continue to use technology patented by Unisys in certain categories of software supporting the GIF format. These first statements caused immediate reactions and some confusion.” From The GIF Controversy: A Software Developer’s Perspective.

“[Currently,] Unisys is charging web sites $5000 or more... if the software originally used to create the GIFs was not covered by a Unisys license.... The catch is that it appears to be difficult or impossible to get a Unisys license to use LZW in free software that complies with the Open Source Definition or in low-volume proprietary software. [Instead, Unysis requires a yearly license fee directly from Web site operators.] The fact that Unisys was able to patent LZW is due to a flaw in the US patent system that makes even pencil-and-paper calculations patentable.... However, Unisys’s actions are legal under US law, so the only reasonable alternative to paying the ‘Unisys tax’ on the web is to upgrade graphics from GIF to PNG format, or MNG format for animations.” From Burn All GIFs.

Burn All GIFs is a campaign encouraging Web developers to stop using the GIF format. Burn All GIFs also promotes Burn All GIFs Day to both further the campaign and to protest Unisys’s licensing practices. Burn All GIFs is a project of the League for Programming Freedom, an organization that opposes software patents and user interface copyrights.

PNG is a lossless image compression format that is free from patents and royalties. It also compresses better than GIF, supports interlacing, and true alpha transparency. It became a W3C standard in 1996 and is supported by most browsers (though some have not implemented full alpha transparency.) You can convert your GIFs to PNGs with some of the tools listed here.

>  31 August 2002 | LINK | Filed in , ,

Blue Screen of Death

Where do old PC’s go to die? In February 2002, the Basel Action Network the Silicon Valley Toxics Coalition released the report “Exporting Harm: The High-Tech Trashing of Asia” which reveals that “huge quantities of hazardous electronic wastes are being exported to to China, Pakistan and India where they are processed in operations that are extremely harmful to human health and the environment.”

Four villages in Guiyu, Guangdong province (about 4 hours drive from Hong Kong) have been turned into toxic waste dumps.

“About 100,000 poor migrant workers are employed breaking apart and processing obsolete computers imported primarily from North America.... The operations involve men, women and children toiling under primitive conditions, often unaware of the health and environmental hazards involved in operations which include open burning of plastics and wires, riverbank acid works to extract gold, melting and burning of toxic soldered circuit boards and the cracking and dumping of toxic lead laden cathode ray tubes. The investigative team witnessed many tons of the E-waste simply being dumped along rivers, in open fields and irrigation canals in the rice growing area. Already the pollution in Guiyu has become so devastating that well water is no longer drinkable and thus water has to be trucked in from 30 kilometers away for the entire population.”

The United States is the only developed country in the world that has not ratified the Basel Convention, a UN treaty which bans the export of hazardous wastes from the worlds most developed countries to developing countries.

The report features stunning photographs from Jeroen Bouman. You can find some of his photos and audio commentary as part of the BBC’s Disposable Planet? site.

Found via Slashdot

>  23 August 2002 | LINK | Filed in , , , , ,

Archie Loves Betty, Veronica, and the FBI

Since 1954, the Comics Magazine Association of America has issued a Comics Code Authority Seal to comics submitted by publishers which meet the standards of the Comics Code. In practice, the Code was used as a tool of censorship, since it was nearly impossible to sell unapproved comics to newstands and mass merchandisers. With the rise of specialty comic book stores in the mid-80’s, most publishers have opted out of the Comics Code.

The code was updated in 1971 and again in 1989. The 1989 version adds:

“In general, recognizable national, social, political, cultural, ethnic and racial groups, religious institutions, law enforcement authorities will be portrayed in a positive light. These include the government on the national, state, and municiple levels, including all of its numerous departments, agencies and services; law enforcement agencies such as the FBI, the Secret Service, the CIA, etc.; the military, both United States and foreign; known religious organizations; ethnic advancement agencies; foreign leaders and representatives of other governments and national groups; and social groups identifiable by lifestyle, such as homosexuals, the economically disadvantaged, the economically privileged, the homeless, senior citizens, minors, etc.”

CPB notes, “DC Comics and Archie are the publishers who still abide by the Code to portray the CIA, ethnic advancement agencies and the economically privileged in a positive light.”

>  22 August 2002 | LINK | Filed in , , , , ,

Nutrition Facts Facts

Says @issue: The Journal of Business and Design:

Nutrition Facts“Less than a century ago, food labels barely identified what was inside a box. Consumers had to trust the manufacturer to use only healthy ingredients—not always a safe bet. In 1924, the Federal Food and Drug Act gave the U.S. Food and Drug Administration (FDA) authority to clamp down on bogus health claims and misleading labels. The FDA also tried to make manufacturers more accountable by requiring them to list their names and addresses on the packaging. By 1973, packaged food makers were also required to supply nutritional values listing the amount of vitamins and minerals inside, but the manner in which this information was presented was often inconsistent and incomplete. The Nutrition Labeling and Education Act of 1990 finally called for a major overhaul of food labels. The FDA and U.S. Department of Agriculture set out uniform guidelines for the new labels. Launched in 1994, Nutrition Facts offers a plethora of health-relevant information.”

Brand design firm Greenfield/Belser, best known for their law firm marketing material, designed the new nutrition facts label. Reknown designer Massimo Vignelli lauded the label design in the July 1996 AIGA Journal. Praising the clarity of the information architecutre, its visual integrity, and flexibility of the design on packages of all shapes and sizes, he writes, “The label is a clean testimonial of Energy Guidecivilization, a statement of social responsibility, and a masterpiece of graphic design. Not a small achievement in today’s graphic landscape.” He does not point out that the generic, anonymous design and apparent lack of “marketing devices” actually brands the space and its information as neutral, scientific, institutional, and authoritative.

Greenfield/Belser’s Web site describes other forays into design in the public interest as well:

“In 1999, we applied a variation of that label design, Drug Facts, to all over-the-counter drugs. Years earlier, we designed the Energy Guide that appears on all major appliances.”

>  17 August 2002 | LINK | Filed in , , , , , ,



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