ICC Commercial Mechanical Practice Exam

What is the minimum width of the unobstructed passageway required for access to appliances in attics?

1. 30 inches

2. 24 inches

3. 22 inches

4. 18 inches

The correct answer is: 24 inches

The minimum width of the unobstructed passageway required for access to appliances in attics is 24 inches. This requirement is crucial for safety and accessibility, ensuring that a technician or service personnel can move easily without obstruction when servicing or inspecting mechanical equipment located in the attic space. This standard facilitates the safe handling and maneuvering of tools and equipment, which is especially important in emergency situations or when maintenance is necessary. Passageways narrower than 24 inches could prevent adequate access, making it difficult for individuals to reach the appliances safely and efficiently. This rule reflects best practices in building codes to promote safety and access in mechanical spaces within a building.