To which condition is safety glazing required for exterior windows?

Safety glazing is required for exterior windows that have exposed edges less than 60 inches from the ground because this height poses a risk of accidental human impact, which can lead to severe injuries. When glass is at such a height, individuals can easily come into contact with it during normal activities, such as walking or playing outside. The use of safety glazing helps to minimize the risks associated with glass breakage, as it is designed to withstand impact better than regular glass and reduces the likelihood of injury from sharp edges.

The requirement for safety glazing is part of building codes and regulations to enhance the safety of residential and commercial properties. Safety glazing materials include tempered glass or laminated glass, which are specifically engineered to provide greater strength and protect against shattering. This requirement is particularly emphasized in areas where there is a high likelihood of people interacting close to the glass surface, thus reinforcing the importance of safety measures in building design.