"P. J. Alling" <[EMAIL PROTECTED]> wrote: >If it's going to be clear, most acrylics scratch much too easily. >Synthetic sapphire, yea that's the way to go, cast in one piece.
In case you're interested, here's the "formula" they use for the glass floor of the CN tower: Layers, from the top down: * 3/16" scuff plate (replaced annually) * Two 1/2" layers of clear tempered glass, laminated together * A one inch layer of air (for insulation) * Two 1/4" layers of clear tempered glass, laminated together Size of each panel: 42" by 50" Load tests are performed annually on each panel to ensure safety. Designed to support 38,556 kg. -- Mark Roberts Photography and writing www.robertstech.com
