Glass in certain locations has to be safety glazing (tempered or laminated) so it breaks safely, and IBC 2406 lists the "hazardous locations" that trigger it. These include glazing in doors and sidelites near doors, glazing in wet areas like tubs and showers, large panes close to the floor, and glazing adjacent to stairs, ramps, and landings. Each pane in a hazardous location must be permanently labeled to show it's safety glazing. Guards made of glass and sloped/overhead glazing (skylights) carry additional requirements.
The common mistake is ordinary annealed glass specified in a hazardous location — a sidelite next to an entry door, or a low window near a stair — caught only at inspection when the safety-glazing label is missing. Reviewers check window and door schedules and elevations against the 2406 hazardous-location list, and look for the safety-glazing designation. It's an easy detail to miss and an expensive one to fix after the glass is installed.
This guide describes the model code for general understanding and is not a substitute for the adopted code and amendments enforced by your local authority having jurisdiction. Verify all figures against your jurisdiction's codes of record.