11. INSPECTION GUIDELINES FOR PERIMETER FIRE CONTAINMENT SYSTEMS
A perimeter fire containment system is designed to prevent the spread of fire through a linear opening between a fire rated floor assembly and a non-fire rated exterior wall assembly. The continuity requirements within the building codes state shall be continuous without vertical openings. Voids at the intersection of the floor assembly and exterior curtain wall are permitted if protected with a perimeter fire containment system.
For a perimeter fire containment system, some of the common firestopping materials used include:
• Preformed firestop products( Hilti CFS EOS Quick Seal)
• Water based firestop spray( Hilti CFS SP WB)
• Silicone based firestop spray( Hilti CFS SP SIL)
11.1 Steps for inspection
CHECK POINTS FOR PERIMETER FIRE BARRIER SYSTEMS
1) Is the hourly fire rating of the referenced perimeter fire containment system or EJ greater than or equal to the fire rating of the floor assembly?
2) Does the floor construction and the exterior wall construction match the floor / wall construction listed in the perimeter fire containment system or EJ?
3) Does the curtain wall construction comply with the following requirements of the referenced perimeter fire containment system or EJ?
a) Does the system include vision glass( if applicable)? b) Proper spacing of mullions and transoms? c) Proper mullion coverings( type, thickness, density, etc.) d) Proper curtain wall spandrel insulation( type, thickness, density, etc.)
e) Proper spandrel panel perimeter angles or stiffeners( dimensions, gauge, fastener spacing, etc.)
4) Does the field installation of the firestopping materials comply with the following requirements of the referenced fire resistive joint system or EJ?
a) Maximum width of the joint
b) Proper backing material installed including proper orientation, depth and compression of backing material
c) Proper firestopping product, including type, amount, thickness, orientation, etc.
d) Proper accessories installed, including support clips for backing material.
e) For firestop spray products: does the applied firestop spray overlap the adjacent surfaces properly?
OBSERVATION COMMENTS
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