ABSTRACT
Insulight Glass Bricks are non-load-bearing units which will carry their own weight with a wide safety factor up to any practical height, but because of wind pressures and other stresses it is necessary to put an intermediate support in panels over 20 ft. high or 120 ft. super. Very wide panels require an expansion joint every 20 ft. “Armourlight” Toughened Lenses have an exceedingly high resistance to mechanical loads and severe thermal conditions, and will withstand an impact test approximately 10 times as great as an annealed tile of similar shape and of twice the thickness. Toughened Lenses may be set direct in concrete, without risks of cracks developing as a result of the stresses induced by movement of the concrete. “Armourlight” Toughened Lenses have the same characteristic fracture as “Armourplate” Glass, and if broken, they expand and exert a lateral thrust on the concrete in which they are fixed, and remain in position.
