![]() Safe rooms can range in cost depending on whether you're having one incorporated into new construction or adding one to an already existing house, the latter being more expensive. Since they're in the ground, they may seem more secure than an interior safe room, but they do require you to go outside, which isn't always a safe option during a severe weather event. An in-ground safe room might look like a more traditional storm cellar in that its access is typically outside. There are three main types of safe rooms: In-ground, above-ground and within a basement. There should also be adequate ventilation. Underground or outdoor safe rooms should be watertight and have a transmitter so rescue crews can locate it and get to its occupants in the event debris blocks the exit. It should be well-anchored so that it won't tip over in high winds. The structure must be able to withstand penetration of an object like a 2 by 4 being hurled at it at 100 mph. The list of criteria is long, but these are the main points: The structure's walls, doors and ceiling must be strong enough to withstand 250 mph wind gusts for up to three seconds without buckling. According to the Federal Emergency Management Agency (FEMA) a safe room is built to "provide near-absolute protection in extreme weather events, including tornadoes and hurricanes", and must be built following a set of safety criteria established by FEMA. ![]()
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