Geocellular vs Concrete vs Poly — OSD Material Selector

Answer three questions to see which OSD tank material fits your site. The council’s rule always overrides — this is a starting point, not approval.

1. What does your council allow for OSD?

2. What matters most on this project?

3. What sits above the tank?

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Fit score

Material	Fit	Relative score

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Scores weight your priority and load case only. They do not override a council material requirement or an engineer’s site-specific certification. Where a council mandates concrete, that rule wins regardless of score.