Robust glazing and annealed glass pane sizes

Some glazing materials, such as annealed glass, gain strength through thickness; others such as polycarbonates or glass blocks are inherently strong. Some annealed glass is considered suitable for use in large areas forming fronts to shops, showrooms, offices, factories and public buildings. To be considered robust, panes of annealed glass should be supported on all sides and should not exceed the sizes in Diagram 2.1 for the given thickness of glass.