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Featured Glass thickness ???

Discussion in 'Help and Advice' started by tyger, Jun 12, 2014.

  1. tyger

    tyger Registered

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    I am correct in saying it is the water height that dictates glass thickness rather than water volume? in other words a 2 foot square cube, 2 foot tall would only need the same thickness glass as a 6 foot cube , 2 foot tall?
    hope this question makes sense lol.
     
  2. jim_fitz

    jim_fitz Admin Staff Member

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    yes thats correct the deeper you go the greater the pressure
     
  3. tyger

    tyger Registered

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    Brill I thought so. Thanks for the reply.
     
  4. screwloose

    screwloose Registered

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    Makes sense right until you say 6 foot cube ....2 foot tall :crazy:





    Tyger :haha:
     
  5. tyger

    tyger Registered

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    It was just a way of asking lol.
     
  6. liam0

    liam0 Registered

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    That wouldn't be a cube then would it.........

    neville :-D
     
  7. screwloose

    screwloose Registered

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    Was just sayin :tease:
     
  8. stuartupton21

    stuartupton21 Registered

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    You need at least 3.5 m for anything over 14in deep anything over the pressure grows so you need to account for that
     
  9. doug_amanda

    doug_amanda Admin Staff Member

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    No its not just the depth, a 2ft cube with a safety factor of 4 only needs to be 8mm glass,
    6ft x 6ft x 2ft tall would need to be 13mm glass to achieve the same safety factor.

    there's a good aquarium calculator here

    Aquarium Safety Calculator.xls.xlsx
     
  10. jim_fitz

    jim_fitz Admin Staff Member

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    as a civil engineer we work on a safety factor of 1.5
    and here we are simply balancing pressure, which is quite easy and accurate to determine
    a safety factor of 4 is way over the top imo
     
  11. doug_amanda

    doug_amanda Admin Staff Member

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    If that was the case, would you buy a 2ft cube made out of 5mm glass?

    No me neither :whistling:
     
  12. stuartupton21

    stuartupton21 Registered

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    Yes y not? 14in deep tank only needs 3.5 mm . So 5mm is overkill. I've built plenty of tanks with no problem. In fact my 4.5 ft deep cylinder tank has 10mm glass with no problems
     
  13. doug_amanda

    doug_amanda Admin Staff Member

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    The point I'm making is that its not just the depth that needs to be taken into account, its also the volume (as the original question)

    The safety factor when aquarium building isn't just about the amount of water the glass will hold its about withstanding the accidental bash with the Nintendo nunchuck, or the vacuum cleaner handle or the little ones hands bashing on the glass.
     
  14. stuartupton21

    stuartupton21 Registered

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    Fair play well said
     
  15. ICEMAN80

    ICEMAN80 Registered

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    What about an xbox360 controller? Lol
     
  16. sick2death

    sick2death Registered

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    You need safety factor of 12 if you own an xbox, to account for the rage induced controller throwing when you get slapped on call of duty!
     
  17. ICEMAN80

    ICEMAN80 Registered

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    Haha no chance mate I clocked all the COD's with ease lol
     
  18. Stribers92

    Stribers92 Registered

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