ABSTRACT
The physical properties of float glass produced in Europe do not vary significantly between manufacturers and can be taken as standard values according to BS EN 572-2. Float glass produced in other parts of the world may vary in colour, but the physical properties are very similar. Rolled plate glass and drawn sheet glass have slightly higher density because the viscosity required for those processes is higher but this is unlikely to be significant in design. Toughened glass, also known as 'fully tempered', whether heat soaked or not, should break into a large number of roughly cubic fragments. Soda-lime glass is prone to a type of stress corrosion cracking known as 'static fatigue' that makes it weaker under continuous loading than under short-term load. Laminated glass can consist of any combination of processed glass types with a choice of interlayers having different properties.
