What type of glass is not considered safety glass?

The correct response identifies annealed glass as the type that is not considered safety glass. Safety glass is designed to reduce the risk of injury when broken, and typically includes tempered glass and laminated glass, both of which are treated to withstand impact and minimize shattering.

Annealed glass, on the other hand, is manufactured through a simpler process that does not involve the added strength or safety features. When broken, annealed glass tends to shatter into large, sharp pieces which can pose a significant injury risk. This contrasts with tempered glass, which is treated to break into small, dull pieces that are less likely to cause harm, and laminated glass, which holds together even when shattered due to an interlayer between the sheets.

Plate glass and wire glass can also have safety applications, though they may not be classified as safety glass in every context. Wire glass, for example, has a wire mesh embedded within it to help hold the glass together when broken. However, plate glass is typically used for its aesthetic and transparency characteristics rather than for safety.

In summary, annealed glass is the type that lacks the characteristics and treatments that ensure safety upon breakage, thus reinforcing that it is not regarded as safety glass.