R312.2 Window Fall Protection
In dwelling units, where the top of the sill of an operable window opening is located less than 24 inches (610 mm) above the finished floor and greater than 72 inches (1829 mm) above the finished grade or other surface below on the exterior of the building, the operable window shall comply with one of the following:
- Operable window openings will not allow a 4-inch-diameter (102 mm) sphere to pass through where the openings are in their largest opened position.
- Operable windows are provided with window fall prevention devices that comply with ASTM F2090.
- Operable windows are provided with window opening control devices that comply with Section R312.2.2.