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The Projects Portal

Sharing knowledge to build rich, sustainable lives.
Appropedia is the site for collaborative solutions in sustainability, poverty reduction and international development through the use of sound principles and appropriate technology and the sharing of wisdom and project information. It is a wiki, a type of website which allows anyone to add, remove, or edit content. Registration is encouraged but not required for contributors.

Appropedia has been described as an "appropriate technology wiki," but it is much broader than that - it is a green wiki, and a wiki for all matters of international development and aid. But most importantly, Appropedia is an open site for stakeholders to come together to find, create and improve scalable and adaptable solutions. For more about our motivation, see Appropedia:Mission.

To create a new project page, first browse the project articles and subcategories below for examples and check for possible collaboration opportunities, such as articles similar to what you're considering writing. If you are looking for ideas for your own project, check out our suggested projects. It is highly encouraged to tag your projects with their status -- you can do this with a few templates. Be Bold!

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Selected page

Diagram of compost
Building compost guide. There are many ways to build a good compost. This page shows a method that comes from a rural, developing world perspective, although it could easily be used or adapted elsewhere. The aim is to build a quick decomposing hot compost that is made from locally available materials, which can easily be gathered and built in a rural setting. The work in building a large compost is often shared amongst a number of people, with the final compost being used by each one when appropriate.

The method of building compost can be different depending on the amount of compost required, materials available, type of compost and particularly the climate of the region.
Pit compost: Pit compost is ideal for areas with medium to low rainfall. The depth of the pit will depend upon the amount of rainfall. The less the rainfall the deeper the pit should be to prevent the rapid loss of water, which is essential in the natural production of compost. In some dry regions it has been known for pits to be dug as deep as 3ft. For example, this type of compost is used in the dryer and warmer parts of central and northern Uganda.
Heap compost: Probably the best way of making vegetation compost in areas of heavy and frequent rainfall. A farmer does not need to build a deep pit to build this type of compost. In regions of heavy rainfall, water would remain standing in a pit resulting in an inadequate flow of nutrients and the production of peat rather than compost. For example, this type is used in the temperate mountainous regions of eastern Uganda and western Kenya.
Trench compost: This involves the building of the compost for convenience close to where it is needed or the source raw material.

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Things you can do

Appropedia is a wiki, so you can edit and share information and collaborate with others to lighten our ecological footprint and live richly, in harmony with our environment.

You can start contributing after you create an account or log in if you have an existing account.

Appropriate technology things you can do
Occidental_greywater

Greywater without land. A five stage, activated sludge greywater system in drums.

This OSAT has been designed but not yet tested - use at own risk.
This OSAT has been modeled.
This OSAT has been prototyped.
This OSAT has been verified by: Name of organization.
This OSAT has been deployed by: Whom at least: How many times in: Where.

You can help Appropedia by contributing to the next step in this OSAT's status.

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Projects gallery

AEF greywater: Recreating a failing greywater marsh at the Arcata Educational Farm.  
Aleiha's parabolic solar cooker: A very hot parabolic solar cooker.  
Argentina photovoltaic: A small photovoltaic system for a natural building/permaculture institute in Central Argentina.  
Backpack frame bike trailer: Big Russ towing one of the least-expensive bike trailer designs out there built from an old backpack-frame.  
Bike snow plow: A retractable snow plow for a bike.  
Biodigester Effluent Fertilizer Quality Testing with IRRI, in Mexico city  
Biodigester follow up and maintenance with IRRI in Puebla, Mexico.  
Bloomfield Cobb Bench: A cobb bench at Bloomfiled Elementary School in Arcata, CA.  
Briceland PV: 960W photovoltaic installation in Briceland, CA.  
CCAT's Vermicomposting Bin: Beautiful, pentagonal, Douglas Fir worm bin.  
CCAT's Living Roof: A living roof for CCAT's Earthen Oven.  
Ceiling insulation out of recycled Tetra pack at Pedregal in Oaxaca, Mexico.  
Chris's ENGR305 Solar Food Dehydrator: A hybrid solar food dehydrator, that adheres to as many of the principles of modern food dehydration.  
DIF Adobe Senior Center: Building an Adobe senior center in Parras, Coahuila México.  
Ecological dry toilets at Pedregal in Oaxaca, Mexico  
Ersson rainwater harvest and purification (original): Rainwater catchment and purification system, at less than $1500  
Greywater Ecuador La lagrima purificadora: Greywater in an Ecuadorian seed saving center.  
Hotel Perote Solar Pool Heating System: Solar hot water system for a hotel pool in Parras, Coahuila México.  
Hydroponic Vertical Garden at Sembradores Urbanosin Mexico City  
Kiva’s straw bale greenhouse: Year round veggies in a homemade, just under the permitting limit, strawbale greenhouse.  
Micro filter dams at Pedregal in Oaxaca, Mexico  
Mini urban greenhouse for seed germination in Mexico City  
Occidental greywater: A five stage, activated sludge greywater system in drums.  
Open Solar Outdoors Test Field
Open source photovoltaic
systems performance data  
Openstreetmap
Copyright free
Map Making  
Photovoltaic system at St. Jude's church: St. Jude's Church, Cupertino, CA  
Polyculture Planting at Sembradores Urbanos in Mexico City  
Rainwater catchment at Isla Urbana in Mexico City.  
Rainwater catchment at Pedregal in Oaxaca, Mexico  
Rainwater quality testing with Isla Urbana in Mexico City  
Raised Beds at Sembradores Urbanos in Mexico City  
Reforestation at Pedregal in Oaxaca, Mexico  
Solar Charged Lawnmower: Converting a very used gas power lawnmower into a solar charged, low emission, almost silent, lawn cutting machine.  
Sunny Brae Yurt: Building yurt to brave Humboldt's winter. Arcata, CA.  
Terraces and Ditches at Pedregal in Oaxaca, Mexico  
Tire shingles: Roof shingles made from old racing slicks.  
UABJO Demonstration Wetland Wastewater Treatment, Reclamation, and Outreach in Oaxaca, Mexico.  
UTC Solar Distiller: Building a prototype solar distiller in Parras, Coahuila México.  
Worm bin at Sembradores Urbanosin Mexico City  
Zaragoza Solar Hot Water System: Solar hot water system for a residence in Parras, Coahuila México.  
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