Solar Desalination Tank Glass & Steel Thickness

You're doing this to provide drinking water for a Third World nation, aren't you? If that is the case, it would be better to use metal drums instead of rectangular structures. They have less sharp angles to accumulate stress, so it will be a lot safer. Also, the kind of special purpose high strength glass is very costly even in First World nations; you might not even be able to get it locally, so you may have to pay a fortune to have it imported.

no way its restriction for me these dimensions and configurations

if you know stress equations that i can use to calculate thickness or to calculate deflection please send me quickly

If you support the glass at some intermediate points with standoffs from the sheet metal opposite, you can use economically thin materials. However, the pipe sizes seem way out of proportion to the likely throughput of water.

(Hmm...I wonder if any backwoods Kentucky guys have already mastered this technology.)

no option to make supports inside tank

just tank just glass

help me

To the last three questions: Why, Why, and Why?

its my master and i follow system and supervisors