Hardened Structures Hardened Shelters LLC is a Design & Construction Program Management firm.
Our Team consists of a core group of Independent, specially trained shelter design firms for the architectural design, structural engineering, blast engineering, EMP/HEMP shielding, CBRN, HVAC, electrical and alternative energy designs.
Reference Standards for Shelter Design include FEMA 453, "Design and Guidance for Shelters and Safe Rooms", along with Swiss Government publiscations on shelter design.
All construction is performed by a special group of geographically specific licensed general contractors. These independent design firms and general contractors have had specialized shelter design and build training before they can become part of the “Hardened Structures Team”.
The Hardened Structures Team has successfully delivered shelter projects world-wide for over 21 years.