Construction Supervisor License Practice Exam

What is use group R - 3?

1. A boarding house with transient occupancy for 16 or fewer boarders

2. A boarding house with nontransient occupancy for 18 or fewer boarders

3. Three family multiple dwelling units with less than five boarders

4. A detached two-family dwelling unit, three stories in height

The correct answer is: A detached two-family dwelling unit, three stories in height

Use Group R-3 is classified to include structures that are intended for residential use but without the complexities of larger residential buildings. Under this classification, a detached two-family dwelling unit, which can be three stories in height, is included. This group recognizes the nature of smaller residential settings that provide living accommodations for families or unrelated individuals. The focus of Use Group R-3 is on residential buildings that are typically single-family homes or small multi-family dwellings. This group caters to buildings that are often less complex in terms of exits, safety requirements, and other construction standards when compared to larger residential or commercial structures. Understanding that these smaller buildings have fewer boarders and occupants ensures that the regulations and safety standards applied are appropriate for their size and use. In contrast, the other options describe various types of boarding houses or multi-family units that do not align with the specific criteria for R-3 use. For instance, options referring to transient or nontransient boarding houses include more residents and present different occupancy characteristics that categorize them outside of Use Group R-3.