A modular safety shelter provides protection from fragment, overpressure, radiation, and toxic hazards through a combination of physical design of modular segments, of joint seals between modular segments, of door assemblies, and of HVAC control systems. The modular shelter is formed of two or more prefabricated concrete modular segments each including a built-in foundation, roof, and side walls, and a prefabricated concrete vestibule segment providing an airlock-like access to the shelter. The prefabricated modular segments and vestibule segment are transported to a site and assembled to each other on-site to provide a fully enclosed space within the modular shelter. A multi-layer joint seal is formed between adjacent modular segments to prevent ingress of toxic, flammable, or thermal hazards. An integrated HVAC controller monitors toxic or flammable hazards outside and inside of the shelter, and controls HVAC systems to minimize spread of contaminants upon detecting a hazard.

An elevating-type shelter door enables operators to easily open and close in a short period of time, is highly water-tight, and has an excellent durability. A shelter door opens and closes an opening portion when a door body ascends and descends along a guide rail by means of an elevating device. The opening portion is provided on a ceiling of a shelter body. The shelter body is defines an interior space which serves as an evacuation space in an underground. A main body has a central convex portion which slidably fits to the opening portion along an inclination direction in which both the opening portion and the guide rail inclines. An elevating stand is slidably fixed to move along a rest column. The elevating stand is located above the opening portion when the door body is fully ascended and located in the interior space when the opening portion is closed.

The thermopaque glass is a semitransparent structure. The thermopaque glass is configured for use as the transparent material used in a window into a building. The thermopaque glass is a composite laminar structure. The thermopaque glass inhibits the passage of electromagnetic through the window into the building by reflecting a portion of the electromagnetic radiation striking the window away from the building. The thermopaque glass comprises a plurality of lamina and a plurality of interlayered resins. The plurality of interlayered resins assemble the plurality of lamina into the composite structure of the thermopaque glass. Each of the plurality of lamina is a plate selected from the group consisting of a transparent plate and a semitransparent plate.

Lightweight, glidable shielded components (e.g. doors) may be used in conjunction with accredited enclosures to provide electromagnetic, acoustic and CBR protection.

Lightweight, glidable shielded components (e.g. doors) may be used in conjunction with accredited enclosures to provide electromagnetic, acoustic and CBR protection.

A shielding enclosure for blocking electromagnetic pulses to protect electrical equipment includes shield panels having a layered structure of conductive sheets and insulating sheets between the conductive sheets with an outward conductive sheet at a first end of the layered structure and an inward conductive sheet at a second end of the layered structure, and a first ground wire connected to the outward conductive sheet for connecting to a ground, and a second ground wire incorporating a rectifier and connected to the inward conductive sheet for connecting to a ground, the rectifier being oriented to restrict the electric current in the second ground wire to flowing from the inward conductive sheet to the ground; where the shield panels are positioned so that the inward conductive sheet generally faces the electrical equipment and the outward conductive sheet generally faces away from the electrical equipment.

A shielding enclosure for blocking electromagnetic pulses to protect electrical equipment includes shield panels having a layered structure of conductive sheets and insulating sheets between the conductive sheets with an outward conductive sheet at a first end of the layered structure and an inward conductive sheet at a second end of the layered structure, and a first ground wire connected to the outward conductive sheet for connecting to a ground, and a second ground wire incorporating a rectifier and connected to the inward conductive sheet for connecting to a ground, the rectifier being oriented to restrict the electric current in the second ground wire to flowing from the inward conductive sheet to the ground; where the shield panels are positioned so that the inward conductive sheet generally faces the electrical equipment and the outward conductive sheet generally faces away from the electrical equipment.

A customizable glass wall system is disclosed. The system comprises at least two glazed, transparent panes mounted to a frame, creating an internal space less than approximately five inches thick. At least one upper roller is mounted to an upper portion of the frame, preferably on a removable headboard, and at least one lower roller is mounted to a lower portion of the frame, preferably to a removable tailboard. At least one partitioned film is attached to the upper and lower rollers. The partitioned film has partitions with varied properties and functions, ranging from thermal insulation to decoration, which can be selectively positioned behind the transparent panes by rotating the partitioned film by means of the rollers until a selected partition of film is displayed. The system can be automated based on time, weather, amount of sunlight, or user preference, and it may include window coverings or solar cells.

A customizable glass wall system is disclosed. The system comprises at least two glazed, transparent panes mounted to a frame, creating an internal space less than approximately five inches thick. At least one upper roller is mounted to an upper portion of the frame, preferably on a removable headboard, and at least one lower roller is mounted to a lower portion of the frame, preferably to a removable tailboard. At least one partitioned film is attached to the upper and lower rollers. The partitioned film has partitions with varied properties and functions, ranging from thermal insulation to decoration, which can be selectively positioned behind the transparent panes by rotating the partitioned film by means of the rollers until a selected partition of film is displayed. The system can be automated based on time, weather, amount of sunlight, or user preference, and it may include window coverings or solar cells.

Electromagnetically shielding an enclosable structure having a floor, walls, a ceiling, and at least one closeable opening by applying a shielding wallcovering to at least a portion of one of the walls and applying a second type of shielding material to at least a portion of the enclosable structure, wherein the second type of shielding material differs from the shielding wallcovering. The shielding wall covering is wallpaper comprising a metal-coated broad good and a resin. Other types of shielding material may include a transparent, shielding window covering such as NiCVD coated screen of woven silk fibers; shielded flooring such as a layered combinations of Kevlar non-woven as a base layer, nickel-coated non-woven layers, and a PCF toughened polymer; and a transition shielding strip made of a base layer of the shielding wallpaper with a PCF toughened polymer coating over a portion of the strip.