iglube performed best compared to column and cone modular stormwater systems according to recent testing carried out at Deakin Uni. The testing showed that manufacturers claimed effective void ratio was often overstated and column and cone systems lose over 30% storage volume due to air voids created by the columns and cones. “Modules containing cone and column geometries demonstrated reduced effective hydraulic storage”. These systems also “produced the slowest hydraulic response behaviour during inflow pulse, surcharge inflow and surcharge drawdown testing”.
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