Safety Factor
The variability of the strength of glass due to limitations of the manufacturing process means a suitable safety factor must be used when calculating glass thickness. The factor commonly used is 3.8. While not a perfect guarantee, it will remove all risk bar that of damaged or very poor quality glass.
Disclaimer Notification: The information provided here is only intended as a guide, TheAquaTools.com is not responsible for any problems that may arise from glass manufacturing defects, construction faults, or any other factors.