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A vapor barrier on the warm side of the envelope must be combined with a venting path on the cold side of the insulation. This is because no vapor barrier is perfect, and because water may get into the structure, typically from rain. In general, the better the vapor barrier and the drier the conditions, the less venting is required. [7]
Firefighters training at a U.S. Air Force base in fire proximity suits Detail of fire proximity suit. A fire proximity suit (also, silvers, silver bunker suit, or asbestos suit) is a suit designed to protect a firefighter or volcanologist from extremely high temperatures. They were first designed and used in the 1930s.
The benefits of preventing a fire instead of suppressing it makes hypoxic air suitable for applications where a fire would cause unacceptable damage. Unlike traditional fire-suppression systems, dedicated pipes or nozzles are not required. Hypoxic air for fire prevention are used in [citation needed]: Data centers / ICT facilities
Smoke damper may be used to prevent the spread of smoke from the space of fire origin to other spaces in the same building. A combination of fans and dampers can exhaust smoke from an area while pressurizing the smoke-free areas around the affected area (inhibiting smoke infiltration into additional areas).
Fire barriers are continuous through concealed spaces (e.g., above a ceiling) to the floor deck or roof deck above the barrier. Fire partitions are not required to extend through concealed spaces if the construction assembly forming the bottom of the concealed space, such as the ceiling, has a fire resistance rating at least equal to or greater ...
For example, information on microfilm is destroyed at 65.5 °C (149.9 °F) (a.k.a. Class 150) [citation needed] and magnetic media (such as data tapes) lose data above 51.7 °C (125.1 °F) (a.k.a. Class 125). [citation needed] Fireproof vaults built to meet the more stringent Class 125 requirement are called data-rated vaults. [citation needed]
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