International Code Council Fire-Inspector-II Dumps Questions Answers

Fire-Resistance Rating for Nonbearing Walls in Type IV Construction

Type IV (Heavy Timber) construction, as defined by the International Building Code (IBC) 2021, Section 602.4, consists of large, solid or laminated wood members.

Interior nonbearing walls and partitions in Type IV construction are not required to have a fire-resistance rating (0 hours) unless they separate different occupancies or are specifically mandated by another code provision.

2. Why Type IV Does Not Require a Rating for Nonbearing Walls

The heavy timber components inherently provide fire resistance due to their large cross-section, which chars on the surface and slows fire penetration.

IBC Table 601 confirms that interior nonbearing walls in Type IV construction do not have a required fire-resistance rating.

3. Verification of Other Options

Option B (1 hour) – Incorrect, as Type IV does not require a 1-hour rating for interior nonbearing walls unless specific conditions apply.

Option C (1-1/2 hours) – Incorrect, as there is no code requirement for this level of rating in Type IV nonbearing walls.

Option D (2 hours) – Incorrect, as Type IV walls are not rated unless separating occupancies.

Reference Sources:

International Building Code (IBC) 2021 – Section 602.4 (Type IV Construction Requirements)

IBC Table 601 (Fire-Resistance Ratings for Building Elements)

ICC Fire Inspector II Study Guide (2021)

In organic coating processes where Class I liquids are exposed to air, fire codes require Class I, Division I electrical installations in hazardous locations to prevent ignition of flammable vapors.

The "immediate vicinity" around pumps or equipment where vapors may accumulate extends 10 feet horizontally from the vapor liberation point in all directions.

Reference to Fire Inspector Documentation:

1. 2021 International Fire Code (IFC) – Section 1503.2.1 (Electrical Installations in Organic Coating Processes)

IFC 1503.2.1 requires that electrical components must be rated for Class I, Division I within 10 feet of vapor sources.

This prevents ignition hazards in locations with flammable vapors.

2. NFPA 33 – Standard for Spray Application Using Flammable or Combustible Materials (2021 Edition) – Section 6.5.2

NFPA 33, Section 6.5.2 states that a 10-foot horizontal zone is considered hazardous and requires Class I, Division I electrical installation.

Detailed Explanation of Answer Choices:

Option A (Incorrect): 5 feet is too short and does not provide sufficient protection from vapor migration.

Option B (Correct): 10 feet is the correct required distance per IFC 1503.2.1 and NFPA 33.

Option C (Incorrect): 20 feet is beyond the required hazardous zone.

Option D (Incorrect): 50 feet is excessive and not required by code.

Thus, the correct and verified answer is: B. 10.

LP-Gas Storage Limits for Dealers in Non-Public Buildings

According to the International Fire Code (IFC) 2021, Section 6109.9, the maximum allowable quantity of LP-gas in containers stored by a dealer awaiting resale in a building that is not open to the public is 2,000 pounds of water capacity.

This limit is intended to reduce fire and explosion hazards in enclosed spaces while allowing reasonable storage for commercial purposes.

2. Understanding Water Capacity vs. Propane Weight

The water capacity of an LP-gas cylinder refers to the total weight of water the container can hold, not the actual propane content.

The propane content is typically about 42% of the water capacity (i.e., 2,000 lbs. of water capacity is approximately 840 lbs. of propane).

3. Verification of Other Options

Option A (735 lbs.) – Incorrect, as IFC allows a significantly higher storage limit for dealers in non-public buildings.

Option B (1,000 lbs.) – Incorrect, as the actual limit per IFC 6109.9 is 2,000 lbs.

Option D (2,500 lbs.) – Incorrect, as this exceeds the IFC's maximum allowable storage limit.

Reference Sources:

International Fire Code (IFC) 2021 – Section 6109.9 (LP-Gas Storage Limits in Buildings Not Open to the Public)

NFPA 58: Liquefied Petroleum Gas Code (LP-Gas Storage and Handling Guidelines)

ICC Fire Inspector II Study Guide (2021)