Windows are exempted from this requirement because the bottom glass is almost never over 9 square feet.
Tempered glass above floor.
So the glass must be larger than 9 square feet and within 36 inches of a walking area plus the bottom of the window has to be below 18 inches above the floor and top more than 36 inches above the floor.
According to code check complete.
You must temper all glass if its bottom edge is less than five feet above a walking or standing surface such as a shower floor.
One or more walking surfaces are within 36 inches 914 mm measured horizontally and in a straight line of the glazing.
Also any window glass within 60 of the floor that is over a bathtub or in a shower must be tempered.
If the door is equal to or less than 50 percent glass it is considered to be an opaque door.
Where a hot tub is outdoors all glass must be tempered if the bottom edge is less than five feet above the walkway and five feet away from the water s edge according to the international residential code.
The bottom edge of the glazing is less than 18 inches 457 mm above the floor 3.
Glass doors by definition in the iecc are considered to be those which are more than 50 percent glass in area.
The top of the glass is less than 36 inches above the floor.
Where to install windows with tempered glass is not just dictated by the height of the window.
According to the national glass association there are 4 criteria that require safety glass.
Any window glass with 60 of a stair step or landing.
When is a window required to be made from tempered glass.
There are also four exception allowed as noted below in the citation from the residential edition of the florida building code fbc and the international residential code irc.
Any glass within 24 inches of a door along the same wall as the door or perpendicular to it that is less than 60 inches above the floor must be safety tempered glass.
The top edge of the glazing is more than 36 inches 914 mm above the floor.
The size of the glass exceeds 9 square feet.
The u factor requirements discussed above for vertical fenestration also apply to exterior glass doors.
All glass in the bathroom or around a hot tub or sauna must consist of safety glass if the bottom edge is less than 60 inches above a standing or walking surface such as the shower floor.