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The following are the types of doors typically used in residential applications: solid wood door, panel doors (hollow and solid core), metal skinned wood-edged doors and metal edge-wrapped doors, and Fiberglass doors (strongest of the residential type). Typically, door frames are solid wood. Residential doors also frequently contain wood. Steel ...
This can be accomplished by calculating the net explosive weight (NEW) which is the equivalent weight of TNT that would be required to effect entry through various obstacles like reinforced concrete, plywood of various thicknesses, steel doors of various thicknesses, etc. [27] The net explosive weights of commonly used explosives is recorded so ...
Most residential passage (room to room) doors are 30 in × 80 in (760 mm × 2,030 mm). A standard US residential (exterior) door size is 36 in × 80 in (910 mm × 2,030 mm). Interior doors for wheelchair access must also have a minimum width of 36 in (910 mm).
The most basic safe room is simply a closet with the hollow-core door replaced with an exterior-grade solid-core door that has a deadbolt and longer hinge screws and strike-plate screws to resist battering. Sometimes, the ceiling is reinforced, or gated, to prevent easy access from the attic or from an overhead crawl space.
The fortified doors and walls protect the occupants so they can summon help using a mobile or land-line phone. Doors and walls can be reinforced with steel, Kevlar, sound-proof or bullet-resistant fiberglass panels. The door to the safe room can be concealed by panels that match existing walls or doors in the home.
Building openings such as garage doors and windows are often weak points susceptible to failure by wind pressure and blowing debris. Once failure occurs, wind pressure builds up inside the building resulting in the roof lifting off the building. Hurricane shutters can provide protection.
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