Modular Crate vs. Rubble-Filled Soakaway — Excavation Comparator

Enter your required storage volume and see how much excavation each method needs. Storm Manage’s PP crate modules deliver a 95% void ratio, compared to roughly 30% for a traditional rubble-filled pit — the same storage capacity needs far less digging, spoil removal and backfill material with crates.

Required Storage Volume (m³)

Storm Manage Crate System (95% void ratio)

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m³ excavation required

Traditional Rubble-Filled Pit (~30% void ratio)

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m³ excavation required

Crate system needs — m³ less excavation — —% less digging, spoil removal and backfill for the same storage volume.

Void ratios: Storm Manage modular crate = 95%; typical clean-stone rubble-filled pit ≈ 30% (varies with stone grading and compaction). Excavation volume = Storage Volume ÷ Void Ratio. Actual dig depth and footprint also depend on cover depth and site access — request a design review →