Through penetration firestop systems
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Membrane penetration firestop systems
UL Standard for Through-Penetration Firestops
Penetration firestopping systems and fire resistive joint systems are a passive means of fire protection. There is no movement or activation required. These passive systems are mainly used to compartmentalize a fire and keep it from spreading for a period of time long enough that occupants can evacuate the building and so firefighters can perform initial lifesaving tasks. Modern buildings are full of various services that travel from room to room throughout a building. Electrical cables, data cables, and plumbing pipes are few of the items that pass through walls as they travel through a building. Engineers try to avoid having these services pass through fire and smoke barriers, but it is usually impossible. When a service must pass through a rated wall, penetration firestop systems are used to ensure the wall rating is maintined.
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UL standards require successful testing of all approved through-penetration firestops designed for use in breaches in firewalls or floor-ceiling assemblies, or both. The UL tests required by Underwriters Laboratories determine the ability of a firestop system to stop the spread of fire, smoke, and water through a fire-rated barrier in the event of a fire and for how long a period of time. Building codes require the use of firestop systems tested and approved under the UL standard, Fire Tests of Through-Penetration Firestops. Ratings are then established on the basis of:. This method does not evaluate the ability of uncured firestop systems to resist such exposure.
Through-Penetration Firestop Systems. Learning Objective: The student shall be able to obtain installation details on through-penetration firestop systems. This video illustrates a common problem with through-penetration firestop systems: improper installation that renders the system ineffective.
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