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  2. Fire door - Wikipedia

    en.wikipedia.org/wiki/Fire_door

    NFPA 80 allows a maximum door undercut of 3/4 inch, however fire doors are tested with smaller clearances in accordance with NFPA 252. [6] Corridors have a fire rating of one hour or less, and the fire doors in them are required by code to have a fire rating of 1/2 or 1/3 hour, the intent of which is mainly to restrict smoke travel. [7]

  3. Door - Wikipedia

    en.wikipedia.org/wiki/Door

    DIN 18101/1985 defines interior single molded doors to have a common panel height of 1985 mm (normativ height 2010 mm) at panel widths of 610 mm, 735 mm, 860 mm, 985 mm, 1110 mm, plus a larger door panel size of 1110 mm x 2110 mm. [25] The newer DIN 18101/2014 drops the definition of just five standard door sizes in favor of a basic raster ...

  4. EN 16034 - Wikipedia

    en.wikipedia.org/wiki/EN_16034

    EN 16034 is a set of European standards which specify the technical performance characteristics for fire resistant and smoke control products, such as fire doors. Compliance with this standard requires to fulfill the requirements of the Construction Product Regulation [ 1 ] for construction products (short CPR).

  5. Doctors Say This Is How You Can Loosen and Clear Mucus From ...

    www.aol.com/doctors-loosen-clear-mucus-chest...

    Try using a humidifier to “maintain humidity levels between 35-45% in your home.” He also suggests using an air purifier with HEPA filter “to remove allergens and irritants,” and keep your ...

  6. Brain health, sleep, diet: 3 health resolutions for 2025

    www.aol.com/brain-health-sleep-diet-3-111100590.html

    In this podcast episode, Medical News Today shares three actionable resolutions that can help improve brain, heart, and metabolic health in the new year via diet, sleep, and exercise.

  7. Scientists Finally Solved the Mystery of How the Mayan ...

    www.aol.com/lifestyle/scientists-finally-solved...

    The Mayan calendar’s 819-day cycle has confounded scholars for decades, but new research shows how it matches up to planetary cycles over a 45-year span

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