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henryg

Glass thickness advice - Rimless

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Hi Everyone,

I'm am going through the process of specifying my new aquarium and thought the collective knowledge found here should make my problem a snap! The build is 1800 Long, 600 Wide, 450 Tall (MM), (Max of 425mm waterline) in a braceless design. Due to material cost and overall dry weight, I am stuck between two thicknesses of glass. 15mm & 12mm, with my preference being 12mm. As 15mm nearly doubles the cost and adds another 30KG to an already very heavy tank. Using the Aquatools glass thickness calculator I am being present with a safety factor of 8 for 12mm glass & 12 for 15mm of glass. Which are both incredibly over the safety factor of 3.8, which is an industry recommendation. Which I do not believe relies on a brace, as it is geared off the tensile strength of glass and its flex limitations a long a continuous span. Please let me know your thoughts!

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I know jack shit about building tanks but just from reading what you said and having a 5ft 10mm myself tank I'd say nothing wrong with 12mm .. I think 15mm would only become necessary if you were going 65cm+ on the height.. 

edit: I missed the whole braceless bit ... don't think I'd be game to go braceless above 4ft shallow but if I had to defo at LEAST 15mm. It might cost a few hundred more upfront but how many thousands in damage if the silicone doesn't hold? That calculator probably assumes correct bracing. IMO 6ft braceless is kinda ..insane

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Realize this an ole post , but 12 mm is fine in my book.

I have same dimensions in 10mm for 10 years now , no problem.

However, mine is braced. not sure what u mean by braceless design.

Brendan

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