I was just musing over the subject and was wondering about glass thickness being different for different applications.
Most tanks i have see fail is at the bottom glue seams or the base being busted by rocks or something like that.
Water only weighs 8.33 pounds per gallon which gives it a pressure gradient on 0.433 per foot.
The pressure at the bottom of a two foot tanks walls at the bottom would be .866psi and a three foot being 1.3 psi.
So why the need for heaps thicker glass? Is it for more surface area to affix glue too.
So i was wondering if a ply tank with a much larger area sealed with silicone would require as thick a pane of glass?
I assume the extra surface area supporting the glass being timber would also reduce flex across the pane and remove more stress from the glass.
Does anyone have any different calculations for glass thickness on ply wood tanks?
Or a pressure limit on glass on differnt thicknesses.
I work in the oilfeild and deal with pressures from 2 to 20,000psi every day and understand how hydrostatic pressure works
It struck me as strange you would use the same calculations for very different applications.
Most tanks i have see fail is at the bottom glue seams or the base being busted by rocks or something like that.
Water only weighs 8.33 pounds per gallon which gives it a pressure gradient on 0.433 per foot.
The pressure at the bottom of a two foot tanks walls at the bottom would be .866psi and a three foot being 1.3 psi.
So why the need for heaps thicker glass? Is it for more surface area to affix glue too.
So i was wondering if a ply tank with a much larger area sealed with silicone would require as thick a pane of glass?
I assume the extra surface area supporting the glass being timber would also reduce flex across the pane and remove more stress from the glass.
Does anyone have any different calculations for glass thickness on ply wood tanks?
Or a pressure limit on glass on differnt thicknesses.
I work in the oilfeild and deal with pressures from 2 to 20,000psi every day and understand how hydrostatic pressure works
It struck me as strange you would use the same calculations for very different applications.
