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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