Fire-protection Rating

  • The length of time a wall, floor/ceiling assembly, or roof/ceiling assembly will resist a standard fire without exceeding specified heat transmission, fire penetration, or limitations on structural components.
  • The length of time a structural member, such as a column or beam will resist a standard fire without exceeding specified temperature limits or collapse.
  • The length of time a door, window, or shutter assembly will resist astandard fire without exceeding
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