Performance
Laminated safety glass is tested using a taped,
leather bag filled with lead shot weighing 100 lbs.
A standard size piece of glass is clamped vertically
in a frame. The impactor is supported from a wire
cable so that it will impact the glass in the center.
The ball is lifted to the required height and allowed
to swing freely into the glass. Numerous cracks and
fissures may occur, but no shearing or opening,
through which a 3-inch diameter sphere may pass
freely, will develop.
