Ventilation ducts: Fire resistance (NT FIRE 034)

  • Report #: NT FIRE 034
  • Approved: February 1988
Download pdf Size: 86.93 KB


  This NORDTEST method specifies a procedure to determine the fire resistance of ventilation ducts passing from one fire compartment to another without the aid of fire dampers. This method is not applicable for determination of the fire resistance of the fire barrier itself or of the penetration.