V.1 Decision-making priorities

in order of highest priority first

• safety - low fire danger, low bad air danger, low shock hazard, structurally sound with "fail-safe" secondaries for technicians and for equipment in case of shelter failure
• green - use nontoxics, sustainable practices and options even at a greater cost or lower efficiency etc.
• climate-control - keep climate temperature and humidity within equipment operating range
• resilient - greater than 10 year life expectancy, able to handle extreme environmental conditions, including earthquake, flooding, weather / lightning, extended seasonal heat, extended seasonal cold, high water-table
• low energy input - minimize operating power input requirements
• economical - low maintenance, secure, long-life cycle, recyclable (able to be converted for other uses)
• scalable - must be repeatable within a defined surface area
  
• versatile - able to be deployed in a variety of locations with minimum (or predictable) variation