Massachusetts Construction Supervisor License (CSL) Practice Test

Does a double hung window with a clear opening of 22 in. x 20 in. qualify as an emergency escape window in a two family dwelling?

1. Yes

2. No

3. Only if it has a secondary exit route

4. Only if it can be opened easily

The correct answer is: No

To determine if a double hung window with a clear opening of 22 inches by 20 inches qualifies as an emergency escape window in a two-family dwelling, one must consider the specific requirements set forth in building codes, particularly for emergency escape and rescue openings. An emergency escape window must meet minimum dimensional criteria to ensure that it is accessible and can accommodate an average-sized person during an emergency. In Massachusetts, the International Residential Code (IRC) specifies that the clear opening of an emergency escape and rescue opening should be at least 5.7 square feet. Additionally, the minimum height of the clear opening must be at least 24 inches, and the minimum width should be a minimum of 20 inches. In this case, while the window can be opened, its dimensions need to be analyzed. The total clear opening area for the provided dimensions of 22 inches (height) by 20 inches (width) is 440 square inches, which converts to approximately 3.06 square feet. Since this does not meet the minimum required clear opening area of 5.7 square feet, it therefore does not qualify as an emergency escape window for a two-family dwelling. This reasoning supports the conclusion that the window does not qualify as compliant with emergency escape