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Acrylic storage tank fractured of 4m diameter(thk 50mm), 5m height

Acrylic storage tank fractured of 4m diameter(thk 50mm), 5m height

Acrylic storage tank fractured of 4m diameter(thk 50mm), 5m height

Dear any concerned people
Recently one Acrylic storage tank fractured in size of 4m diameter(thk 50mm), 5m height
this was built 12 years ago.
Several expert say that this would be caused by Seismic load in value of richter scale 3.0
at that time. And Acrylic degradition for lomg time since this built.
This storage tank is installed inside of building for a fish Aqua nearby window sunshine,
so Acrylic material degradation would be caused by UV
When I calculate the required thickness is of 46mm in accordance with ASME RTP-1
and now checking Shell stress effected by Seismic load.

Anyone have similar experience like this situation, pls recomemend any advice why this happened
I also recommended that material test shell be done and compare its material properties between new one and fractured one what is going on material degradition.

Kind regards

RE: Acrylic storage tank fractured of 4m diameter(thk 50mm), 5m height

That matches my experience with transparent plastics exposed to UV from sunshine.

RE: Acrylic storage tank fractured of 4m diameter(thk 50mm), 5m height

Dear 3DDave
Will you give me more details about your experience such as
Size of diameter and thickness and year built caused by UV exposed where about

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