How do I calculate glass thickness??

[Grand Titus]

I have decided to go big and build my own 1080 litre tank:clap: The only problem that im having is calculating the glass thickness, I have been doing some research and most of it is either contridictory or no help at all.
The dimentions of the tank are:

Lenth: 150 cm
Width: 90 cm
Height: 80 cm

Ive had advice on glass thickness ranging from 8mm to 16mm

Can anyone help?:1zhelp:

 

[krytan]

For a tank that deep you'll need 12mm.
http://www.monsterfishkeepers.com/forums/showthread.php?t=139898

 

[chadly831]

i would use 13 or 14mm cant go wrong with thicker glass. good luck