What is the minimum square footage of net clear opening area for an egress window in a second-floor sleeping area?

The minimum square footage of net clear opening area for an egress window in a second-floor sleeping area is established by building codes to ensure that occupants can safely exit the space in case of an emergency. The requirement for egress windows typically stipulates a minimum clear opening of at least 5.7 square feet. This measurement is taken from the window's net clear opening once it is fully opened, meaning that obstructions such as window panes or screens that do not contribute to the clear passage are not included in this total.

A net clear opening of 5.7 square feet is deemed sufficient to accommodate the movement of a person, allowing for quick and effective evacuation, especially in a potentially hazardous situation. This standard is particularly relevant for sleeping areas in residential buildings, where the risk of fire or other emergencies necessitates a reliable and accessible exit route.

The other options either exceed or fall below this standard. For example, higher figures like 6.50 square feet and 7.00 square feet offer more space than required, which, while potentially increasing safety, are above the mandated minimum. Conversely, 4.50 square feet falls below the threshold, failing to meet the safety requirements set forth by building codes. This is pivotal in understanding the