8. INSPECTION GUIDELINES FOR THROUGH PENETRATIONS FIRESTOP SYSTEMS
When a building system component, such as plumbing piping, electrical conduit, cabling, etc, penetrates through a fire rated floor or wall assembly, the fire resistance integrity of that assembly is breached. An appropriate firestopping material must be installed per a tested firestop system that matches the specific penetration application in order to restore the integrity of the fire rated assembly.
For firestopping of through penetrations, some of the commonly used firestopping materials include:
• Preformed firestop products such as firestop plugs( Hilti CFS-PL), firestop collars( Hilti CP643 / 644) or wrap strips( Hilti CP648) for single pipe penetrations.
• Firestop blocks( Hilti CFS-BL) for multiple pipe penetrations in large openings.
• Firestop devices such as a firestop modular sleeve( Hilti CFS-MSL) or speed sleeve( Hilti CP653) for cable bundles.
• Cast-in-place firestop floor devices( Hlti CP680, Hilti CFS-CID U, Hilti CFS-CID MD).
• Acrylic based firestop sealants( Hilti CP606)
• Silicone based firestop sealants( Hilti CFS-S SIL)
• Intumescent firestop seleants( Hilti FS-ONE MAX).
8.1 Steps for inspection
CHECK POINTS FOR THROUGH PENETRATIONS
1) Is the hourly fire rating of the referenced firestop system or EJ greater than or equal to the fire rating of the floor / wall assembly being penetrated?
2) Does the floor or wall construction match the floor / wall assembly listed in the firestop system or EJ?
3) Does the penetrating Item( s) match the acceptable list of penetrants( material, size, diameter, insulation type and thickness, etc.) shown in the firestop system or EJ?
4) Does the field installation comply with the following requirements of the referenced firestop system or EJ?
a) Size of opening b) Minimum and maximum annular space requirements c) Proper backing material( when required)
d) Proper firestopping product, including type, amount, thickness, orientation, etc.
e) Proper accessories installed, including anchor / fasteners, mounting or cover plates, frames, etc.
f) For multiple penetrants: proper distance between penetrating items
g) For cables: allowable cable size, spacing, bundle size, and percent fill of opening
5) For wall assemblies, verify that the field installation was installed properly on both sides of the wall
OBSERVATION COMMENTS
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