Engineering 305 (Engr 305), Appropriate Technology, is a course on appropriate technology at Humboldt State University taught by instructor Lonny Grafman. See past projects below.
Past Projects
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Greywater system at the CSA, Arcata Educational Farm
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A solar dyhedrator to help preserve surplus crops
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An earthen informational kiosk
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Modified off-grid photovoltaic system
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Improved solar water heating system
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Restored the existing herb spiral
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A rooftop greywater filtration system
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Parabolic Solar Cooker
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A valved reflux ethanol still
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A bike trailer from a converted baby stroller
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The Blue Ox earthen
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Earthen Plaster and Natural Paint Recipes
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an energy efficient solution to a refrigerator
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CCAT's comprehensive composting system
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Controlled beds of soil above toxic ground
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A retaining wall for slope erosion
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The cordwood and mortar wall of CCAT's Greenshed
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The clay-straw slip wall of CCAT's Greenshed
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Cob wall of CCAT's Greenshed
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The Clay-straw slip wall of CCAT's Greenshed
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CCAT's Greywater Marsh 2008
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The CCAT Greywater Marsh Continued
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An efficient clothes drying system for CCAT
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A demonstration wind turbine
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A natural concrete stain
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Interior paints from natural ingredients.
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An earthen informational kiosk for CCAT
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An updated iversion of CCAT pedal powered bicycle
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A pedal powered grain mill for CCAT
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CCAT's current rainwater catchment system
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A stable slope for planting and attracting beneficial insects
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CCAT's improved fuel rocket stove
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CCAT's Vermicomposting Bin
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Replacing CCAT's living roof
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A hybrid, solar food dehydrator
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An exploration of compressed earth bricks
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Solar Powered Vertical Vegetable Farm
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A Vertical Axis Wind Turbine
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An instructional Solar Learning Station
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A peanut sheller made from clay and newspaper
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Determining the cost inputs and energy outputs of small scale ethanol production
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A straw bale greenhouse
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A residential greywater processor
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A rainwater catchment system for residential property
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Solar cooker out of local invasive species and waste materials
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A solar cooker and chair when not in use
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A working model of a Pulser pump
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A rainwater catchment system constructed for Old Growth Cellars
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report on the use of biomass waste charcoal briquettes for rocket stove