This stem from my quest to calculate the safety factor for my 72x30x25 rimless glass tank.
It is based on "How to Calculate the Glass Thickness for your Aquarium" by Warren Stillwell.
Here's the link:
http://www.fnzas.org.nz/articles/technical/glass_complete/
This calculator will calculates:
1. Minimum glass thickness/deflection for a desire safety factor
2. The safety factor and deflection given a glass thickness
You can download
here.
Just unzip and double click on the "AquaCalc.jar" file.
It's Java based so you want to download java also if you don't have already.
Get java here:
http://java.sun.com/javase/downloads/index.jsp
download the "Java Runtime Environment (JRE) 6 Update 3".
It's pretty helpful for me, hope it will be useful to others.
Khoi