Originally Posted By: Kevin Blackwell This post was automatically imported from our archived forum.
I am searching for the formula to calculate the window footage for an emergency egress window (24"x 20")
I was told that ( length x width divide by 12 )is the formula is this correct
and what would be the square footage for a 24x20 window?
Thx Kevin from Houston,TX
Originally Posted By: Susan This post was automatically imported from our archived forum.
Kevin,
I know this is after the fact but....keep in mind that the 24x20 measurements are only minimums. The window for emergency egress in a bedroom/sleeping room on grade level must be 5 sf of openable area. This 5 sf must be at least 20 inches wide and 24 inches high. The area for a second story bedroom/sleeping room area increases to 5.7 sf. Again this second story window has to also meet the minimum width and height requirements. I know it is quite confusing.
For sake of example: grade level window used for emergency egress (only one window in each bedroom/sleeping area must meet the code) is 1.5 feet (18 inches) wide and 4 feet high (48 inches). You'd meet the sf requirement (4x1.5=6sf), but not the minimum width requirement.