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2. Firewall (construction) - Wikipedia

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

   There are three main classifications of fire rated walls: fire walls, fire barriers, and fire partitions. A firewall is an assembly of materials used to delay the spread of fire a wall assembly with a prescribed fire resistance duration and independent structural stability. This allows a building to be subdivided into smaller sections.

3. 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

4. Fireplace fireback - Wikipedia

   en.wikipedia.org/wiki/Fireplace_fireback

   The primary functions of a fireback are to protect the wall at the back of the fireplace and radiate heat from the fire into the room. The protection was especially important where the wall was constructed of insubstantial material such as daub (a mud and straw mixture coating interwoven wooden wattles), brick or soft stone.

5. Passive fire protection - Wikipedia

   en.wikipedia.org/wiki/Passive_fire_protection

   Fire-resistance rated wall assembly with fire door, cable tray penetration and intumescent cable coating. Passive fire protection (PFP) is components or systems of a building or structure that slows or impedes the spread of the effects of fire or smoke without system activation, and usually without movement. [1]

6. 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.

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