An exterior window at an exterior wall must be made of safety glazing unless the bottom exposed edge of the glass is what height above the tub?

The requirement for safety glazing near tubs is designed to protect individuals from injury due to glass breakage. The height at which the bottom exposed edge of the glass is positioned is critical in determining whether safety glazing is necessary. When the bottom edge of the glass is 60 inches or more above the tub, it is generally considered to be out of the reach of most users, reducing the risk of accidental impacts that could lead to shattering the glass. Therefore, safety glazing is not mandated at these heights, as the potential for injury from falling against the glass is significantly lowered.

On the other hand, lower heights may increase the potential for accidents and injuries, which is why safety glazing is enforced at those levels. The other height options do not adequately resolve the safety concerns associated with lower glass positions in a bathroom setting adjacent to water fixtures.