Glass/Acrylic Thickness Calculations

AZ Red

Gambusia
Aug 8, 2016
51
17
8
35
Real Name
Preston Ream
I imagine that someone has probably asked this already, but if I couldn't find 1.25" glass, would a .75" and a .5" sandwiched together work instead?

Thx,
AZR
 

mfreader

Feeder Fish
Dec 16, 2010
20
2
3
Canada
It appears some of the original calculator sites are not being maintained, which is unfortunate. The GARF site (www.garf.org) has changed so their tank calculator, which provides glass thickness, is a bit harder to find (http://www.garf.org/navagation.html).

Here's a bit of a technical site on aquarium glass thickness calculations, however it's in the UK so the specs are all metric. A basic metric converter utility can deal with this of course.

http://www.aquarium-glass.co.uk
 

spencer0t

Exodon
Dec 18, 2016
147
15
23
31
Real Name
Spencer
Gender
Male
So
It appears some of the original calculator sites are not being maintained, which is unfortunate. The GARF site (www.garf.org) has changed so their tank calculator, which provides glass thickness, is a bit harder to find (http://www.garf.org/navagation.html).

Here's a bit of a technical site on aquarium glass thickness calculations, however it's in the UK so the specs are all metric. A basic metric converter utility can deal with this of course.

http://www.aquarium-glass.co.uk
So for a larger tank I should use Laminated Annealed Glass
 

mfreader

Feeder Fish
Dec 16, 2010
20
2
3
Canada
So

So for a larger tank I should use Laminated Annealed Glass
I'm no glass engineer/expert. The info at that UK site seems to recommend laminated glass for large panels. I think laminated glass is what you see in car windshields, so instead of blowing apart, it is supposed to fracture as a sheet and therefore leak if stressed. His analogy for tempered (toughened) glass is pretty graphic--with water pressure behind the little shattered bits--would be like a shotgun blast.

It appears, based on your suggested tank size (10x5x5 ft), the approx. force along the bottom seam of a 10 foot by 5 foot window may be a bit over 3,000 lbs (@ 2.17 lbs/sq in), but you need to do the calculations or get a qualified engineer to do them.
 

brent245

Plecostomus
Dec 1, 2009
201
110
61
Arizona
It seems to me the calculator only works for tanks with lengths longer than their height. I'm considering a 20x11x 26tall tank and it suggests 3/4" thick which makes no sense. I figure 3/8 would be more than sufficient. Am I wrong?
 

vader2nd

Feeder Fish
Mar 9, 2017
19
11
3
41
Real Name
Christopher Poulin
Gender
Male
it is good to have an idea on how thick of glass to get when making your own aquarium
 

Matthewgauger

Feeder Fish
Jun 20, 2017
1
0
1
32
Real Name
Matthew Edward gauger
Gender
Male
I got a sweet deal on 2 sheets of half 1/2 inch acrylic measuring 48x48 i am wondering if anyone can tell me the maximum width I can make the tank that it will be safe without Bowing Out because I would rather not cut them and it will be a plywood tank
 

Ken Seeley

Feeder Fish
Dec 23, 2017
25
18
3
49
Real Name
Ken seeley
Gender
Male
Im having a hard time inputing numbers on the calculator, maybe due to cell pgone and not computer?? Lookong to build a 72x36x36 closed top tank
 

KevRoq

Feeder Fish
Jan 25, 2018
1
0
1
26
Real Name
Kevin roque
Gender
Male
I want to build and tank, size 8'Lx2'wx2'h
My local acrylic provider has 2 piece of Acrylic 8x4 at a thickness of 1/4 inch. I dont think thats enough, so what thickness you guys think is safe for that set up.
(Sorry the calculator app is not working for me =( it says error )
 
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