ICC Commercial Building Inspector Practice Test

When determining the floor area allowance per occupant for Group R, Residential, what is the maximum area in square feet?

1. 150 gross

2. 200 gross

3. 250 gross

4. 300 gross

The correct answer is: 200 gross

In the context of the International Building Code (IBC), the maximum area allowance per occupant for Group R, which encompasses residential occupancies, is based on the gross floor area of the building. According to the IBC guidelines, for Group R1, which includes transient residences like hotels, the allowance is typically set at 200 gross square feet per occupant. This figure helps ensure that spaces are adequately sized for the number of occupants, allowing for safety, comfort, and accessibility. Understanding why 200 gross square feet is the acceptable standard is crucial for compliance with building regulations. It provides a balance between efficient use of space and ensuring that residents have enough room for safe habitation. Additionally, considerations such as egress, ventilation, and overall livability contribute to this determination. In contrast, smaller allowances could result in insufficient space, while larger allowances may not be justifiable given the context of residential occupancies. This makes 200 gross square feet the correct choice for the maximum area allowance per occupant in Group R.