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  2. Firewall (construction) - Wikipedia

    en.wikipedia.org/wiki/Firewall_(construction)

    A fire barrier wall, or a fire partition, is a fire-rated wall assembly that are not structurally self-sufficient. [ 2 ] Fire barrier walls are typically continuous from an exterior wall to an exterior wall, or from a floor below to a floor or roof above, or from one fire barrier wall to another fire barrier wall, having a fire resistance ...

  3. Penetration (firestop) - Wikipedia

    en.wikipedia.org/wiki/Penetration_(firestop)

    A penetration, in firestopping, is an opening, such as one created by the use of a cast-in-place sleeve, in a wall or floor assembly required to have a fire-resistance rating, for the purpose of accommodating the passage of a mechanical, electrical, or structural penetrant. [1] The penetration may or may not contain a firestop system.

  4. Firestop - Wikipedia

    en.wikipedia.org/wiki/Firestop

    A firestop or fire-stopping is a form of passive fire protection that is used to seal around openings and between joints in a fire-resistance-rated wall or floor assembly. Firestops are designed to maintain the fire-resistance rating of a wall or floor assembly intended to impede the spread of fire and smoke. [1]

  5. Cross-linked polyethylene - Wikipedia

    en.wikipedia.org/wiki/Cross-linked_polyethylene

    A cross-linked polyethylene (PEX) pipe. Cross-linked polyethylene, commonly abbreviated PEX, XPE or XLPE, is a form of polyethylene with cross-links.It is used predominantly in building services pipework systems, hydronic radiant heating and cooling systems, domestic water piping, insulation for high tension (high voltage) electrical cables, and baby play mats.

  6. Dudael - Wikipedia

    en.wikipedia.org/wiki/Dudael

    And on the day of the great judgement, he shall be cast into the fire. Dudael is also implied to be the prison of all the fallen angels, especially the evil Watchers , the entrance of which is located to the east of Jerusalem . [ 1 ]

  7. Ventilation (firefighting) - Wikipedia

    en.wikipedia.org/wiki/Ventilation_(firefighting)

    It is frequently performed from the outside of a burning building while the fire is being extinguished on the inside. If a large fire is not properly ventilated, it is much harder to fight, and can build up enough poorly burned smoke to create a smoke explosion or enough heat to create a flashover. Poorly placed or timed ventilation can ...

  8. Putlog hole - Wikipedia

    en.wikipedia.org/wiki/Putlog_hole

    Putlog holes or putlock holes [1] are small holes made in the walls of structures to receive the ends of poles (small round logs) or beams, called putlogs or putlocks, to support a scaffolding. [2] Putlog holes may extend through a wall to provide staging on both sides of the wall.

  9. High-voltage transformer fire barriers - Wikipedia

    en.wikipedia.org/wiki/High-voltage_transformer...

    The primary North American document that deals with outdoor high-voltage transformer fire barriers is NFPA 850. [1] NFPA 850 outlines that outdoor oil-insulated transformers should be separated from adjacent structures and from each other by firewalls, spatial separation, or other approved means for the purpose of limiting the damage and potential spread of fire from a transformer failure.