ICC Commercial Building Inspector Practice Test

Which of the following emergency escape and rescue openings complies with the code?

1. A net clear opening 24 inches high by 24 inches wide

2. A net clear opening 27 inches high by 27 inches wide at the ground floor level

3. A net clear opening 30 inches high by 30 inches wide

4. A net clear opening 36 inches high by 36 inches wide

The correct answer is: A net clear opening 27 inches high by 27 inches wide at the ground floor level

The choice of a net clear opening that measures 27 inches high by 27 inches wide at ground floor level complies with the code because it meets the minimum requirements for emergency escape and rescue openings stated in the building codes. Typically, codes specify a minimum opening size to ensure that occupants can escape quickly and rescuers can enter if needed. In many codes, the minimum net clear opening for emergency escape starts at 5.7 square feet, with specific height and width dimensions also required. For a ground-floor opening, less stringent height requirements may apply due to accessibility, meaning a net clear opening of 27 inches in height is considered adequate. This opening allows for a safe and viable means of escape for individuals, including children and those with mobility issues, making it compliant with safety regulations in a residential or commercial setting. The other options either do not provide the required area or exceed the common specifications making them less than ideal for terms of compliance.