Glass Thickness

Flat glass comes in various thicknesses.
The difference in thickness dictates the use of a particular glass for a certain application.
As logic would suggest, thinner glass is more fragile than thicker glass.
Thickness ranges for glass is:

3/32" (2mm)	normally used in picture frames.
1/8" (3mm)	used in storm windows, picture frames, end tables, insulated units, etc.
3/16" (5mm)	used for small table tops, insulated units, small shelves, etc.
1/4" (6mm)	used in table tops (as protective covering), insulated units, single-pane windows, shelves, framed shower doors, etc.
5/16" (8mm)	used in table tops (as protective covering), lightweight shelves,framed shower doors, etc. It is not common in US.
3/8" (10mm)	used in shower doors, table tops, glass walls, glass partitions, hand rails, door lights, etc.
1/2" (12mm)	used for shower doors, table tops, glass walls, glass partitions, hand rails, etc.
5/8" (15mm)	used for shower doors, glass walls, glass partitions, hand rails, etc. It is not common in US.
3/4" (19mm)	used for glass doors, mall fronts, table tops, glass floors, etc.