Basement egress window can actually translated into “a path out”. Which means that egress windows serve as escape routes from the house. Older houses typically are not built for the new codes. Although the basement has previously been completed or renovated. Unless they were done in the last few years, Windows will likely have to be converted to larger descent windows.
According to international building regulations, any small basement with a closet or area used to sleep must have at least one exit window. Basement egress window must have a width of at least 20 inches. And height of at least 24 inches. The door frame height must not exceed 44 inches above the floor. Egress windows must have a net free opening of 5.7 square meters. Although at ground level many areas require only a net free opening of 5 square meters.
You can still attach columns to your window in most areas as long as they do not close the window from the opening. The main reason for adding a basement egress window is to provide a second exit from home in the event of a fire or other emergency requires a quick exit. Many cellars have small windows, or are windows without natural light. An exit window allows more natural light in the area to reduce light bills.