ICC Commercial Mechanical Practice Exam

Detached one and two family dwellings, along with multiple single-family dwellings, are regulated by the International Residential Code up to how many stories high?

1. One

2. Two

3. Three

4. Four

The correct answer is: Three

The International Residential Code (IRC) primarily governs the construction and safety standards for detached one and two-family dwellings, as well as multiple single-family dwellings. The code allows these types of buildings to be designed and constructed up to three stories in height. This provision recognizes that residential structures can vary in design and inhabitance, accommodating two levels of living space above the ground floor along with the ground level. This regulation is critical for ensuring safety and compliance in residential construction, as three-story buildings may introduce more complex design considerations related to structural integrity, egress, fire protection, and overall safety for the residents. By allowing three stories, the IRC aims to balance practicality and safety for both builders and occupants in residential settings.