Quality Control & Inspection Flashcards

What is the significance of the 'T-rating' in a firestop assembly from a QC inspection perspective?

Answer: It limits temperature rise on the unexposed side, critical for areas where combustibles may contact the penetrant

The T-rating limits heat transfer through or along the penetrant; inspectors must verify T-rated systems are used where code requires protection of combustibles near the penetration.

An inspector finds that a firestop product was installed in a wet, uncured concrete floor before the floor reached the minimum cure time specified in the listing. What should the inspector do?

Answer: Reject — installation into uncured substrate violates the listing conditions and may impair performance

Listed system requirements include substrate conditions such as concrete cure time; installing before the substrate meets these requirements invalidates the listing.

Which document should an inspector reference to determine whether a firestop installer is qualified to install a specific manufacturer's system?

Answer: The manufacturer's installer qualification or certification records and training documentation

Many firestop listings require installers to be trained and certified by the manufacturer; the inspector should review current certification records before allowing installation to proceed.

In a firestop QC program, what is the role of 'close-out documentation'?

Answer: To compile all inspection reports, system certifications, product data sheets, and non-conformance resolutions into a permanent record for the building

Close-out documentation creates a permanent, auditable record of all firestop work that can be used for future renovations, inspections, or insurance claims.

When a firestop system must be installed in a seismic zone, what additional criterion must the inspector verify compared to a non-seismic application?

Answer: That the system has a tested seismic movement rating (e.g., seismic joint systems) appropriate for the design displacement

Seismic conditions impose dynamic movement demands; the inspector must confirm the system is listed for the required seismic movement and that seismic-rated components are properly installed.

A completed firestop installation is later concealed by finish work before the inspector can observe it. According to best QC practice, what should happen?

Answer: Require the concealing work to be opened to allow inspection, or reject the firestop work as uninspected

Work concealed before required inspection must be uncovered; the inspector cannot certify compliance for systems they were unable to observe, and the AHJ may require destructive investigation.

Under IFC Section 703.1, which party is responsible for maintaining fire-resistance-rated assemblies, including firestop systems, after a building is occupied?

Answer: The building owner

IFC Section 703.1 requires the building owner to maintain fire-resistance-rated construction, including firestop systems, in their rated condition throughout the life of the building.