Simple Survival

The Simple Survival is a standardized earthship model that is a more affordable alternative to the Global model.

Design
The main structural elements of the Simple Surivial are similar to the Global model, but are changed to keep costs down. Additionally some amenties are forgone to bring the price down further.

Similarites to the Global model

 * A glasshouse faces the equator and adjoins the living rooms.
 * The living spaces are surrounded and separated from each other by thermal mass walls, with glass windows and doors adjoining the glasshouse.
 * Planter cells and ET beds process and grey black water.
 * Solar panels are placed above the top of the glasshouse.
 * Water is collected via the roof into cisterns, buried under dirt.
 * Cooling is provided by series of vents in the living spaces and the adjoining glasshouse.
 * More rooms can be added to the sides as desired.

Differences to the Global model

 * The living rooms are U shaped instad of rectangular.
 * Instead of a planar roof covering all of the living rooms, each room has a seperate concave concrete mesh roof as the bottom (load bearing) layer. On top of all the adjoining concreate mesh layers, a layer of dirt is placed on top, then a layer of insulation, then another final layer of concrete whereupon the water is collected.
 * The shower and toilet are placed to the sides of the glasshouse.
 * There is no WOM. Rather water is filtered and pumped in a more ad-hoc method.
 * The shower has gravity feed water that is only solar heated via a small can placed in the window facing the sun.
 * The toilet is a bucket-flush toilet.
 * Instead of a POM, a portable all-in-one inverter/battery system is used to supply on-demand AC power to rooms.
 * Instead of a manufactured septic tank, a manually constructed "outlaw" septic tank is built onsite.

Upgrading a Simple Survial
Earthship Biotecture have commented that many customers have requested a Simple Survival structure but with the amenities upgraded to be more like a conventional house, a la the global model. For example, some people want AC power outlets and flush toilets.

Building codes
The systems of the Simple Survival often do not meed building codes in developed countries, and thus the Simple Survival typically cannot be built near developed communities in developer countries unless the systems are upgraded to Global model equivalents.

Venting

 * The pipes in the wall are on an angle so condensation will flow out of the house.
 * Screens can be placed on each end to stop animals getting in, etc.

Electrical system

 * Different kind of charge controlers can handle different minimum/maximum voltages.

Water system

 * No pressurized water.
 * Hot water is achieved by heating from the sun. Collectors are panels used to heat water/liquid.
 * Garden hose can be used for source water for lots of the part, e.g. source water to different rooms.

Bucket-flush toilet
Fill bucket with a water pumped from the grey/black water.

Grey water and black water systems
Kitchen