IFC Installation Practices and Procedures 3

Question 1

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?

Accepted Answer

Stop work and consult a firestop engineering judgment or alternate listing

Answer

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.

Question 2

What is the correct procedure when installing firestop sealant in a joint that will experience movement?

Accepted Answer

Select a sealant listed for the anticipated movement capability of that joint

Answer

Dynamic joints require firestop materials specifically tested and listed for the expected movement range to maintain integrity under both normal and fire conditions.

Question 3

How is the 'F-rating' of a through-penetration firestop system defined?

Accepted Answer

The time a firestop system prevents flame passage through an opening

Answer

The F-rating is the time period in hours during which a firestop system prevents the passage of flame through the tested opening.

Question 4

When installing a fire-rated expansion joint cover, the installer must verify which critical dimension matches the listing?

Accepted Answer

The joint width at time of installation relative to the listed range

Answer

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.

Question 5

Which tool is essential for verifying that caulk sealant depth meets listing requirements during installation?

Accepted Answer

A depth gauge or wet film thickness comb

Answer

A depth gauge or wet film thickness comb verifies that sealant is applied at the depth specified in the listing before it cures.

(IFC) International Firestop Council Premier Certificate Practice Test

(IFC) International Firestop Council Premier Certificate Practice Test

IFC Installation Practices and Procedures 3