If you are engineering an aquarium, the acrylic aquarium window thickness calculation is the step that keeps the window from being a liability. The calculation takes the water depth, the unsupported span and the edge support, and turns them into the minimum panel thickness with a safety factor for a structure that will be filled for years.
How the numbers fit together
The pressure at the window base comes from the water depth; a 3 m depth is about 29.4 kPa. The span and the edge restraint then decide how much bending the panel sees. A panel supported on all four edges carries much less bending than a free-edged pane, so the calculation yields a thinner, still-safe window. The output is a minimum thickness that is then rounded up to a practical cast size such as 50 mm, 75 mm or 100 mm.
What the supplier must do
A supplier performing the acrylic aquarium window thickness calculation for you should name the depth, span and support assumptions, then the resulting thickness, not just quote a price per square metre. RP River People provides this calculation with every aquarium window quotation, and supplies the cast acrylic panel machined to the answer. For the viewing-window engineering, see large acrylic aquarium viewing panels.
Frequently Asked Questions
Q: What pressure does a 3 m deep window see?
A: About 29.4 kPa at the window base before any safety factor.
Q: Do you provide the calculation with a quote?
A: Yes, every RP aquarium window quotation includes the depth, span, support and resulting thickness.
Q: Can the thickness be reduced with more framing?
A: Adding edge support lowers bending and can allow a thinner panel for the same load.
For a project-specific quotation on cast acrylic panels, email oversales@rpplexiglass.com with your opening size, water depth, support layout and drawing.