Earthcom 32-48
The EC 32 X 48 is a totally self-contained 15 psi elliptical arch condominium disaster shelter designed to protect up to 25 adults for long periods or 50 people for short durations such as during tornadoes.  The arches must be assembled on site by a Radius Installer or local contractors.  The product was specifically designed and developed to protect  people during and after disasters such as tornadoes, hurricanes, earthquakes, storms, forest fires, power failures, nuclear power plant accidents, nuclear/chemical terrorism, and full-scale protracted nuclear, chemical and biological war.  A tremendous effort has been made to think of every conceivable incident that shelterists could face in all types of disasters. Many geometrical shapes were experimented with before finalizing the EC 32 X 48. The EC 32 X 48 includes the fiberglass arches, entranceway, emergency escape, MCAS 120 life support system, plans, etc. A SCUPP 400 (Self-Contained Underground Power Plant)  is usually also used for long-term shelter durations.  With the EC 32 X 48's "state of the art" technology and long-term self-contained independence, it qualifies as a T.H.E.T.A. (Total Human Environment for Terrestrial Attach) underground shelter.