Welcome to Appropedia

From Appropedia
Jump to: navigation, search
edit  watch  

Sharing knowledge to build rich, sustainable lives.

Appropedia is for collaborative solutions
in sustainability, appropriate technology and poverty reduction.

You are welcome to add to and edit Appropedia -
your site to find, co-create and improve the solutions we need. Our vision and mission.

Contributors have made 284,578 edits and uploaded 22,423 files.
Browse our categories or all 6,244 articles.

edit  watch  

Announcements — more

Windmillprint-crop.jpg As part of a 3-D printing class, graduate students will be designing printable open-source appropriate technology for sustainable development. If you want a technology designed to be 3-D printed, post your ideas here. Chosen designs will be made and open-sourced for the global community. Deadline Nov. 13, 2014


Foundation of the underground tank (copyleft Practical Action/Douglas Gumbo)
Underground rainwater storage facilities. Rainwater storage tanks are more important in semi arid areas than any other areas because they are useful in storing limited water supplies for agricultural purposes. In semiarid regions, where precipitation is low or infrequent during the dry season, it is necessary to store the maximum amount of rainwater during the wet season for use at a later time, especially for agricultural supply. One of the methods frequently used is the underground storage tanks. The in situ technology consists of making storage available in areas where the water is going to be utilised. All rainfall-harvesting systems have three components: a collection area, a conveyance system, and a storage area. In this application, collection and storage is provided within the landscape.

Consider five main factors when designing your underground tank.

  1. Seepage
  2. Evaporation
  3. Length of the dry spell
  4. Daily usage
  5. Construction costs
Rainwater catchment at Isla Urbana

A rainwater catchment system set up by Isla Urbana with the Huicholes in Mexico.

Lonny Grafman (right), the founder of Appropedia.org
I love to see projects that make the world a better place manifest. The way a project manifests from inception, brainstorming, researching, creating, testing, iterating, promoting, etc. always fill me with wonder and excitement. There is no one way that it unfolds, but my favorite ways to be part of are those that are collaborative.

Bicycle wheel
Transport. According to the Appropriate transport manual, sustainable transportation is a strategy for the flow of people and goods across the Earth that meets the needs of the present without compromising the ability of future generations to meet their own needs. Transportation accounted for 32.6% of US green house gas emissions in 2005. In addition to the widely publicized environmental consequences of driving automobiles, it is also socially and economically costly:
  • Land use: Parking and roads use valuable land resources.
  • Transportation equity: Driving, with all of its expenses, costs the average U.S. household $7,000 per year per vehicle.
  • Economics: Most of the money spent on driving leaves a local economy, weakening it.
  • Community: Travelers outside of their cars interact more with their physical environment and each other.
  • Safety: The presence of pedestrians and cyclists make our neighborhoods safer from crime. Conversely, 42,000 Americans are killed in car accidents every year.
  • Health: Increasingly, Americans are suffering from weight-related illnesses. This is partly attributable to the decline in active transportation use and availability.

Building and encouraging alternatives to the single-occupant vehicle, or, for short "alternative transportation," is imperative. Some alternative transportation advocates have taken to using the term, sustainable transportation, instead of the previous, widely-used "alternative transportation" term to avoid sidelining their interest from the mainstream.

Many efficient, practical, and inexpensive sustainable transportation technologies already exist, meaning activism, policy work, and planning research is most often more crucial to developing sustainable transportation than technology development.

edit  watch  Selected service learning Projects gallery (refresh)

Engineering 308 (Engr 308), Technology and the Environment, is a course taught at Humboldt State University, currently by instructor Lonny Grafman.

Arcata bags

2012: Entire class partnered with Humboldt Scrap to analyze the embedded energy and carbon in various reusable and single use bags in Arcata  
Dominican Republic alternative building analysis

2011: Entire class Partnered with the Dominican community of La Yuca to compare the cost, embedded energy and carbon between three building methods  
Arcata plastic bags

2010: Entire class partnered with the City of Arcata to analyze the embedded energy and carbon in single use plastic bags in Arcata  
CCAT PV system energy analysis

2009: One team partnered with CCAT to analyze the function and energy buyback of their photovoltaic system, others teams included partnering with CCAT on Papercrete vs. StrawBale and Environmental impact of clay vs lime; with RCEA on Street lighting Analysis); and a local business on Multi-Pure vs. Brita Analysis  

edit  watch  

Construction zone — correct mistakes & flag spam as needed

Newest articles more Wanted pages - click to add info more
Under construction
New pages being developed:
  1. San Francisco
  2. Solar Roadways
  3. San Diego
  4. Patsari Cookstove Construction Manual (in Spanish)
  5. Long Beach
  6. InGaN growth buffer layer literature review
  7. Recources
  8. Excubator
  9. Design of Multi-Junction Photovoltaic Cells Optimized for Varied Atmospheric Conditions
  10. Earth Reforestation Project

Note: Appropedia's newest pages may not yet comply with our policies. Page titles in italics are "redirects," often created when moving a page.

Under construction

Create a new page:

  1. Animals
  2. Organic waste
  3. Nutrition
  4. Ecosystem
  5. Human development
  6. Clay
  7. Environmental science
  8. Appropriate energy overview
  9. Building management systems
  10. Open sustainability

These red links are invitations for you to contribute your knowledge.

Or create a page on the topic of your choice.

Newest files - images and documents that can be added to pages more

Note: Appropedia's newest files may not yet comply with our policies.

edit  watch  

Please help Appropedia grow!

We want your projects, current works, observations and wisdom! See Contributing content. Improve articles by clicking "edit" at top of the page or section. Our philosophy is: Be Bold and contribute!

Questions? Comments? Visit the Village Pump. Also discuss Appropedia and related topics over on the Permies permaculture forums.

Find us on Facebook, Twitter, Identica,FriendFeed, StumbleUpon and Delicious. Check our Flickr images and YouTube videos.