Tempered VS annealed glass thickness

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rawley2

Feeder Fish
MFK Member
Jan 15, 2008
8
0
0
Florida
Hello,

I'm currently building 2 tanks that will be 6' deep.

I used this calculator: http://anythingfish.com/Aquarium_glass_thickness_calculator.htm

And this article: http://www.fnzas.org.nz/articles/technical/glass_complete/

For my largest width of glass 5 feet wide by 6 feet tall I have figured I need 1 1/2 glass to 1 3/4 inch glass.

Take the same numbers but change the tensile strength from 19.2MPa to 175MPa for tempered glass and I can drop to 3/4" glass with a safety factor of 6.5!!

Can someone please shoot a hole in this for me. LOL

Really I wondering what the problems could be with tempered glass so thin. I do know that when it breaks its spectacular but I also know it's way harder to break.

I seen a guy at the glass shop take a 1/4"pc of tempered glass 20" long and brace it on the ends and stand on it. Pretty impressive at least to me.

Thanks for look at this for me.
 
rawley2;1425697; said:
For my largest width of glass 5 feet wide by 6 feet tall I have figured I need 1 1/2 glass to 1 3/4 inch glass.

Take the same numbers but change the tensile strength from 19.2MPa to 175MPa for tempered glass and I can drop to 3/4" glass with a safety factor of 6.5!!


The first part is with annealed glass?

I would go with tempered either way. Used to work with both tempered and annealed. Tempered is much harder to break of course and doesn't break under pressure like annealed..
 
for the cpst differance i would go with tempered anyway. that or cast acrylic. ther raseon is that if somehow it dose blow out, like if someone swong a chair at it?, whatever. you wont have shards that could kill you, but beads... honestly though i would use 2" acrylic.
 
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