Glazing 36 inches or more measured horizontally from the walking surface. The rail shall be capable of withstanding a horizontal load of 50 pounds per linear foot without contacting the glass and have a cross-sectional height of not less than 1-1/2 inches.Ģ. Where glazing is adjacent to a walking surface and a horizontal rail is installed at 34 to 38 inches above the walking surface. Per Section R308.4.4 glass located in guardrails or any railing system regardless of its size or height above the floor, must be tempered.ġ. Given the other sections this ones an easy one. It does not mention how far the rail must be located from the glass but should not make contact with the glass when pressure is applied to it.įor the final exception here the outboard panes in insulating glass units or other multiple glazed panels do not need to be tempered when the bottom edge of the glass is located 25 feet or more above a floor, roof, walking surface, or other horizontal surface that is adjacent to the exterior glass.
This rail however must be able to withstand a horizontal load of 50 pounds per linear feet and have a cross sectional height of no less than 1-1/2 inches. Outboard panes in insulating glass units and other multiple glazed panels where the bottom edge of the glass is 25 feet or more above grade, a roof, walking surfaces or other horizontal surface adjacent to the glass exterior.ĭecorative glass, like stained glass for example, it not required to be tempered.įor the second exception if a horizontal rail is provided along the walking surface adjacent to the glass that is located between 34 to 38 inches above the floor, then the glass is not required to be tempered. The rail shall be capable of withstanding a horizontal load of 50 pounds per linear foot without contacting the glass and have a cross-sectional height of not less than 1-1/2 inches.ģ. Where glazing is adjacent to a walking surface and a horizontal rail is installed 34 to 38 inches above the walking surface. In this section the glass in a window must meet all 4 parameters for it to be considered hazardous.Ģ. Per Section R308.4.3 the next hazardous location that we find is with glass located within a window. We will cover glass in windows themselves next.Īlso this exception takes into consideration that although a patio door might be the length of the frame, it understands that the fixed panel of the patio door does not swing and therefore provides this exception to glazing located adjacent to it. Again for the purposes of this section only it is referring to glass that is adjacent to doors. We will get into this exception next.įinally glazing that is adjacent to the fixed panel of a patio door is not required to be tempered. If this is the case, this exception references you to apply Section R308.4.3 to the glazing to determine if it is considered a hazardous location. The next exception is for glazing adjacent to doors that serve a closet or storage area that is 3 feet or less in depth. This section only pertains to glass or windows that are generally located adjacent to a door.
If a window meets those parameters, it must be tempered. There is another section that we will be getting into a little later that pertains to glazing in windows. Something important to note here is that this only pertains to glazing adjacent to doors that are subject to this section.
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