Post #2203653
2026-03-24 02:25 UTC
@inversephase@masto.hackers.town I found some calculators for acrylite (plexiglass/PMMA) but not lexan (PC): https://www.acrylite.co/resources/calculators
This calculator https://awinet.org/tools/shelf-span/ will take the key material property (Modulus of Elasticity (in PSI)). This calculator seems to be doing area loads, and you can use it to solve for span or thickness. Unlike some material-specific calculators I found, it does not include a safety factor calculation.
belateldy I found https://www.palram.com/us/calculators/ for polycarbonate
I'm not enough of an engineer to be confident at interpreting or trying to verify any of these numbers 😕
good luck, we're all counting on you.
Replies (1)
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@inversephase@masto.hackers.town 2026-03-24 03:21
@stylus@social.afront.org yeah, I found the acrylite calculator, but I want something like that for lexan/pc/etc. I guess it looks like if I just went with 12 inch width of a shelf, I can literally type something like "12 inch supported side, 48 inch unsupported side, 50 pounds" and then the thickness is....... ??? maybe that's millimeters and I shoot for the indicator to go to the green zone? it's a little unclear for someone who doesn't normally work in this industry :blobsweats: