Installation Practices and Procedures Flashcards
7 cards from real IFC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Installation Practices and Procedures flashcards as text
During a firestop installation, the installer finds the wall opening is 20% larger than specified in the listing. What is the correct course of action?
Answer: Stop work and consult a firestop engineering judgment or alternate listing
An opening larger than the listed dimension is outside the scope of the tested system and requires an engineering judgment or a listing that covers the actual opening size.
What is the correct procedure when installing firestop sealant in a joint that will experience movement?
Answer: Select a sealant listed for the anticipated movement capability of that joint
Dynamic joints require firestop materials specifically tested and listed for the expected movement range to maintain integrity under both normal and fire conditions.
How is the 'F-rating' of a through-penetration firestop system defined?
Answer: The time a firestop system prevents flame passage through an opening
The F-rating is the time period in hours during which a firestop system prevents the passage of flame through the tested opening.
When installing a fire-rated expansion joint cover, the installer must verify which critical dimension matches the listing?
Answer: The joint width at time of installation relative to the listed range
The joint width at time of installation must fall within the range tested in the listing, as it affects the system's ability to accommodate movement while maintaining fire resistance.
Which tool is essential for verifying that caulk sealant depth meets listing requirements during installation?
Answer: A depth gauge or wet film thickness comb
A depth gauge or wet film thickness comb verifies that sealant is applied at the depth specified in the listing before it cures.
A firestop system listing specifies mineral wool packing to a depth of 4 inches before sealant application. An installer uses 2-inch packing instead. This deviation is:
Answer: A violation of the listing that invalidates the system
Packing depth is a tested parameter; using less than specified changes thermal and structural performance, invalidating the listed system.
After completing firestop installation in a plumbing rough-in, the installer must do what before the work area is enclosed?
Answer: Ensure the installation is inspected and documented before concealment
Firestop work must be inspected and documented before it is concealed so the AHJ can verify compliance with the listing and applicable codes.