IFC Codes, Standards, and Regulations 2 — Questions and Answers
Question 1: Which ASTM standard governs the fire resistance rating test for firestop systems through-penetrations?
- ASTM E84
- ASTM E119
- ASTM E814 (Correct answer)
- ASTM E1399
Correct answer: ASTM E814
ASTM E814 (Standard Test Method for Fire Tests of Through-Penetration Fire Stops) is the primary standard used to test and rate firestop systems.
Question 2: Under IBC, what is the minimum required F-rating for a firestop system in a 2-hour fire-rated assembly?
- 30 minutes
- 1 hour
- 2 hours (Correct answer)
- 3 hours
Correct answer: 2 hours
The IBC requires that the F-rating of a firestop system equal or exceed the fire-resistance rating of the assembly being penetrated.
Question 3: Which organization publishes the standard UL 1479 used for firestop system testing?
- ASTM International
- ICC
- Underwriters Laboratories (Correct answer)
- NFPA
Correct answer: Underwriters Laboratories
UL 1479 (Fire Tests of Through-Penetration Firestops) is published by Underwriters Laboratories and is equivalent to ASTM E814.
Question 4: The T-rating in a firestop system refers to the time during which:
- The system maintains its tensile strength
- Temperature on the unexposed side does not exceed 325°F above ambient (Correct answer)
- The through-penetrant remains functional
- The smoke seal remains intact
Correct answer: Temperature on the unexposed side does not exceed 325°F above ambient
The T-rating measures the time a firestop system prevents the temperature on the unexposed side from rising more than 325°F (181°C) above the initial ambient temperature.
Question 5: According to IBC Section 714, which type of penetration does NOT require a firestop system in a fire-rated assembly?
- Electrical conduit through a 2-hour wall
- Steel pipe through a 1-hour floor
- Concrete column passing through a floor that is part of the column's structural system (Correct answer)
- PVC drain pipe through a rated corridor wall
Correct answer: Concrete column passing through a floor that is part of the column's structural system
IBC provides exceptions for structural elements such as columns that are part of a rated assembly and pass continuously through floors.
Question 6: NFPA 101 Life Safety Code requires firestopping primarily to protect:
- Electrical continuity of building systems
- Means of egress and occupant life safety from fire spread (Correct answer)
- Fire sprinkler piping from heat damage
- HVAC ductwork from pressure loss
Correct answer: Means of egress and occupant life safety from fire spread
NFPA 101 focuses on life safety, so firestopping requirements are directed at preventing fire and smoke from spreading to egress paths.
Question 7: Which code body is primarily responsible for adopting and enforcing the International Building Code at the state or local level?
- ICC directly enforces the IBC nationwide
- The federal government through OSHA
- State and local jurisdictions through adoption (Correct answer)
- NFPA through its model code program
Correct answer: State and local jurisdictions through adoption
The IBC is a model code developed by the ICC but must be adopted by individual state or local jurisdictions to become legally enforceable.
IFC Codes, Standards, and Regulations 2
Which ASTM standard governs the fire resistance rating test for firestop systems through-penetrations?