Tempered Glass Locations starting with the California Code later adopted Nationwide
1961...Shower enclosures must be tempered safety laminated or wired.
1964...Glass doors, glass in doors and glass panels within 18 inches of a walking surface had to comply with the impact-rated glass if subjected to accidental human impact. Tempered-glass must be etched.
1976...Complete rewrite: Glass in doors, glazing immediately adjacent to doors, glass adjacent to any walking surface, sliding glass doors and fixed glass panels, shower doors and enclosures had to be tempered, safety laminated or wired.
1979...Wire glass no longer approved for shower and bathtub enclosures.
1982... Expanded section to include all cases where safety glazing is required: glass doors, sliding and fixed panels, storm doors, unframed swinging glass doors, shower and bath tub enclosures, glazing within 12 inches of a swinging door, fixed glass panels less than 18 inches above the finish floor and within 36 inches of a walking surface. An exemption for protective was included.
1988...No change except that glass in rails was included.
1991... Glass windows in shower or bathtub enclosures were included. Glass panels within 24 inches of the vertical side of a door were also added. Exceptions were reformatted.
1994... No changes except those glass panels forming swimming pool enclosures have to be safety laminated or tempered within 5 feet of a pool deck. Also, glazing enclosing a stairway landing or within 5 feet of the top or bottom of a stairway must be safety laminated or tempered.
2000 IRC
308.4 #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 sf.
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 of the glazing.
2003 IRC
R308.4 Hazardous locations. The following shall be considered specific hazardous locations for the purposes of tempered glazing:
- 1. Glazing in swinging doors except jalousies.
- 2. Glazing in fixed and sliding panels of 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 enclosures 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 (1524 mm) 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 (610 mm) arc of the door in a closed position and whose bottom edge is less than 60 inches (1524 mm) 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 (0.836 m2).
- - 7.2. Bottom edge less than 18 inches (457 mm) above the floor.
- - 7.3. Top edge greater than 36 inches (914 mm) above the floor.
- - 7.4. One or more walking surfaces within 36 inches (914 mm) 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, intervening wall or other permanent barrier between the door and the glazing.
- 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 (1524 mm) above a walking surface and within 60 inches (1524 mm) 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 (914 mm) horizontally of a walking surface when the exposed surface of the glass is less than 60 inches (1524 mm) above the plane of the adjacent walking surface.
- 11. Glazing adjacent to stairways within 60 inches (1524 mm) horizontally of the bottom tread of a stairway in any direction when the exposed surface of the glass is less than 60 inches (1524 mm) 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 (76 mm) 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 area 3 feet (914 mm) 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 (914 mm +/- 51 mm) above the floor. The bar shall be capable of withstanding a horizontal load of 50 pounds per linear foot (74.5 kg/m) without contacting the glass and be a minimum of 1½ inches (38 mm) 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 (7620 mm) or more above grade, a roof, walking surface, or other horizontal [within 45 degrees (0.79 rad) 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 provisions 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 (457 mm) from the railing.