Safety glazing is required in the following hazardous locations.

R308.4 Hazardous locations. ¹ The following shall be considered specific hazardous locations for the purposes of glazing:

1. Glazing in swinging doors except jalousies.
2. Glazing in fixed and sliding door assemblies and panels in sliding and bifold closet door assemblies.
3. Glazing in storm doors.
4. Glazing in all unframed swinging doors.
5. Glazing in doors and closures for hot tubs, whirlpools, saunas, steam rooms, bathtubs and showers. 
    Glazing in any part of a building wall enclosing these compartments where the bottom exposed 
    edge of the glazing is less than 60 inches measured vertically above any standing or walking 
    surface.
6. Glazing, in an individual fixed or operable panel adjacent to a door where the nearest vertical edge 
    is within a 24-inch arc of the door in a closed position and whose bottom edge is less than 60 
    inches above the floor or walking surface.
7. Glazing in an individual fixed or operable panel, other than those locations described in Items 5 and 
    6 above, that meets all of the following conditions:

7.1 Exposed area of an individual pane greater than 9 square feet.
7.2 Bottom edge less than 18 inches above the floor.
7.3 Top edge greater than 36 inches above the floor.
7.4 One or more walking surfaces within 36 inches horizontally of the glazing.

8. All glazing in railings regardless of an area or height above a walking surface. Included are structural 
    baluster panels and nonstructural in-fill panels.
9. Glazing in walls and fences enclosing indoor and outdoor swimming pools, hot tubs and spas where 
    the bottom edge of the glazing is less than 60 inches above a walking surface and within 60 inches 
    horizontally of the water’s edge. This shall apply to single glazing and all panes in multiple glazing.
10. Glazing adjacent to stairways, landings and ramps within 36 inches horizontally of a walking 
    surface when the exposed surface of the glass is less than 60 inches above the plane of the 
    adjacent walking surface.
11. Glazing adjacent to stairways within 60 inches horizontally of the bottom tread of stairway in any 
    direction when the exposed surface of the glass is less than 60 inches above the nose of the 
    tread.

Exception: The following products, materials and uses are exempt from the above hazardous locations:

1. Openings in doors through which a 3-inch sphere is unable to pass.
2. Decorative glass in Items 1, 6 or 7.
3. Glazing in Section R308.4, Item 6, when there is an intervening wall or other permanent barrier 
    between the door and the glazing.
4. Glazing in Section R308.4, Item 6, in walls perpendicular to the plane of the door in a closed 
    position or where access through the door is to a closet or storage area3 feet or less in depth. 
    Glazing in these applications shall comply with Section R308.4, Item 7.
5. Glazing in Section R308.4, Items 7 and 10, when a protective bar is installed on the accessible 
    side(s) of the glazing 36 inches ± 2 inches above the floor. The bar shall be capable of 
    withstanding a horizontal load of 50 pounds per linear foot without contacting the glass and be a 
    minimum of 1-1/2 inches in height.
6. Outboard panes in insulating glass units and other multiple glazed panels in Section R308.4, Item 7, 
    when the bottom edge of the glass is 25 feet or more above grade, a roof, walking surface or other 
    horizontal [within 45 degrees of horizontal] surface adjacent to the glass exterior.
7. Louvered windows and jalousies complying with the requirements of Section R308.2.
8. Mirrors and other glass panels mounted or hung on a surface that provides a continuous backing 
    support.
9. Safety glazing in Section R308.4, Items 10 and 11, is not required where:

9.1 The side of a stairway, landing or ramp has a guardrail or handrail, including balusters or in-
    fill panels, complying with the provision of Sections 1003.3.12 and 1607.7 of the International 
    Building Code; and
9.2 The plane of the glass is greater than 18 inches from the railing.

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¹ 2003 International Building Code