IFC Building Codes & Standards 3 — Questions and Answers
Question 1: The 'T' rating in a UL-listed firestop system limits the temperature rise on the unexposed side to no more than how many degrees Fahrenheit above ambient?
- 325°F (Correct answer)
- 250°F
- 500°F
- 180°F
Correct answer: 325°F
The T rating limits the temperature rise on the unexposed side of a firestop to 325°F (163°C) above ambient temperature after 1 hour of fire exposure.
Question 2: Which organization publishes the Fire Resistance Directory that lists tested and classified firestop systems?
- UL (Underwriters Laboratories) (Correct answer)
- IFC (International Firestop Council)
- ICC (International Code Council)
- NFPA (National Fire Protection Association)
Correct answer: UL (Underwriters Laboratories)
UL publishes the Fire Resistance Directory, which contains classified firestop system designs tested under ASTM E814/UL 1479.
Question 3: When a firestop system is installed where no tested design exists, what alternative compliance method does IBC Section 104.11 allow?
- Alternative materials and methods approved by the building official (Correct answer)
- Field engineering judgment by the installing contractor
- A licensed fire engineer's stamp on the design
- Automatic approval if similar to a listed system
Correct answer: Alternative materials and methods approved by the building official
IBC Section 104.11 permits alternative materials, design, and methods of construction with approval from the building official who must find equivalency to code intent.
Question 4: According to IBC Section 713, a smoke barrier must extend from which boundary to which boundary?
- From the floor to the underside of the floor or roof deck above (Correct answer)
- From the finished floor to the finished ceiling
- From the foundation to the roof
- From the top of the wall to the bottom of any opening
Correct answer: From the floor to the underside of the floor or roof deck above
IBC Section 713 requires smoke barriers to extend from the floor slab to the underside of the floor or roof deck above, ensuring no gaps for smoke travel.
Question 5: ASTM E2307 is the standard test method for evaluating which specific type of firestop application?
- Linear gap firestop systems at perimeter fire containment (Correct answer)
- Through-penetration firestop systems
- Fire-resistant joint systems
- Spray-applied fireproofing
Correct answer: Linear gap firestop systems at perimeter fire containment
ASTM E2307 is the standard test method for determining fire endurance of perimeter fire containment systems (curtain wall/floor slab linear gaps).
Question 6: In healthcare facilities, which code specifically adds firestopping requirements beyond the IBC for existing construction?
- NFPA 101 and The Joint Commission standards (Correct answer)
- OSHA 29 CFR 1910
- NFPA 13 and NFPA 72
- CMS Conditions of Participation only
Correct answer: NFPA 101 and The Joint Commission standards
Healthcare facilities must comply with both NFPA 101 Life Safety Code and The Joint Commission's Environment of Care standards, which mandate annual firestop inspections.
Question 7: Which IBC section requires that penetrations through fire-resistance-rated walls be protected with a listed and labeled firestop system?
- Section 714.3 (Correct answer)
- Section 712.1
- Section 703.2
- Section 708.4
Correct answer: Section 714.3
IBC Section 714.3 mandates that penetrations through fire-resistance-rated walls be protected using a listed and labeled through-penetration firestop system.
IFC Building Codes & Standards 3
The 'T' rating in a UL-listed firestop system limits the temperature rise on the unexposed side to no more than how many degrees Fahrenheit above ambient?