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To catch the rain cover.png Rainwater catchment around the world. Get a paperback on Amazon or free digitally at http://www.tocatchtherain.org.


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A treadle pump being demonstrated in Malawi.
A treadle pump is a human-powered Pump designed to lift water from a depth of seven meters or less. A Treadle is a lever device pressed by the foot to drive a machine, in this case a pump. The treadle pump can do most of the work of a motorized pump, but costs considerably less (75%) to purchase. Because it needs no Fossil fuel (it is driven by the operator's body weight and Leg Muscl]s), it can also cost less (50%) to operate than a motorized pump. It can lift five to seven cubic meters of water per hour from wells and Boreholes up to seven meters deep and can also be used to draw water from Lakes and Rivers. Many treadle pumps are manufactured locally, but they can be challenging to produce consistently without highly skilled welders and production hardware.

Compared to bucket irrigation, the treadle pump can greatly increase the income that farmers generate from their land by increasing the number of growing seasons, by expanding the types of crops that can be cultivated, and improving on the quality of grown crops.

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FBP Nutsy

Nutsy, the modified Universal Nut Sheller for home use.

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Community action news

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May 6 Biodiversity news: Humans 'threaten 1m species with extinction' [1]

May 6 Reduce, reuse, repair and recycle: Bringing the power of plastic recycling to the people [2]

May 2 Mexico: A new, collective business model for traditional crafts in Oaxaca [3]

May 1 UK Climate news: UK Parliament Declares Environment and Climate Emergency, Claire Mitchell [4]

May 1 Bank On San Francisco: Supporting community financial empowerment [5]

Read More...


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Dave barry
There are two kinds of solar-heat systems: 'passive' systems collect the sunlight that hits your home, and 'active' systems collect the sunlight that hits your neighbors' homes, too.

Dave BarryW
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Kiva's straw bale greenhouse
An alternative or natural building involves a range of building systems and materials that place major emphasis on sustainability. Ways of achieving sustainability through natural building focus on durability and the use of minimally processed, plentiful or renewable resources, as well as those that, while recycled or salvaged, produce healthy living environments and maintain indoor air quality. Natural building tends to rely on human labor, more than technology. As Michael G. Smith observes, it depends on "local ecology, geology and climate; on the character of the particular building site, and on the needs and personalities of the builders and users."

The basis of natural building is the need to lessen the environmental impact of buildings and other supporting systems, without sacrificing comfort, health or aesthetics. To be more sustainable, natural building uses primarily abundantly available, renewable, reused or recycled materials. The use of rapidly renewable materials is increasingly a focus. In addition to relying on natural building materials, the emphasis on the architectural design is heightened. The orientation of a building, the utilization of local climate and site conditions, the emphasis on natural ventilation through design, fundamentally lessen operational costs and positively impact the environmental. Building compactly and minimizing the ecological footprint is common, as are on-site handling of energy acquisition, on-site water capture, alternate sewage treatment and water reuse.

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ENGR 215 Introduction to Design projects – Fall 2005: RCEA: The Fall 2005 semester of Engineering 215 worked with RCEA to develop educational displays for the general public.

Fall 2005 ENGR 215 Intro to Design Projects - RCEA
A Bright Idea
To create an interactive, educational display that demonstrates the importance of electrical energy conservation  
Biggest Little Thing
To design an interactive display promoting electrical energy conservation  
Thermal Curtain
To educate people about thermal energy conservation  
Know Your Load
To educate people about phantom loads on electrical devices  
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Solar
Water
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  5. Love your local market
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  7. Caster Wheel Material Application Guide
  8. Caster Wheel Terminology
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