Standard Earthships are built with the signature “U” shaped design. In addition to the passive solar design of the southern wall most Earthships have active solar and wind collectors and use other sustainable methods including rain collectors and biological grey water filtration.
An Earthship home is typically made from earth-rammed tires. These are used to construct the exterior walls of the entire structure except for the south-facing wall (in the Northern Hemisphere). The south wall is primarily large glass panels that are used for passive solar heating. A single earth-rammed tire can weigh upwards of 300 lbs., and therefore it is more efficient to construct them on site than to have to move them.
The process for creating the foundation wall is extremely labor intensive and requires at least two individuals. The first person digs the dirt, shoveling it intothe empty tire, and the second individual pounds the dirt into the sides of the tire. The tire is turned throughout the fill process to ensure that the fill is loaded evenly.
Water Collection
A major off-grid living concern is the collection of water. Water capture is built into every Earthship design. Where most traditional homes have gutter systems to work moisture away the Earthship has raised ridges that keep water on the roof and direct it to the cistern.
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