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  Modular water management Specify a system around site performance. Explore storage, infiltration and harvesting systems with application-led guidance for durable project decisions.
  Soakaway CratesInfiltration modules for managed groundwater recharge. OSD Tank HubOn-site detention planning, materials and sizing. Stormwater Detention TanksHigh-capacity modular storage for controlled discharge. Attenuation TanksBuffer peak flows with engineered underground storage. Rainwater HarvestingCapture and reuse rainwater at project scale. All ApplicationsFind a system by site condition and performance target. Highway & Carpark DrainageReliable drainage beneath high-use paved surfaces. Commercial & ResidentialFlexible systems for compact development footprints. Infrastructure, Airport & IndustrialStorage designed for demanding civil works. Sports, Landscape & PodiumProtect usable ground while managing runoff below.
  
  Featured systemStormwater Detention Tank Hub
  Plan by applicationPaved surfaces Heavy-duty infrastructure Landscape & podium decks
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- Engineering tools Storage estimator Project readiness System comparison Runoff routing Freight yield
  
  Early-stage project support Turn a brief into a clearer scope. Use practical calculators, selectors and checklists to prepare a more confident conversation with the project team.
  Preliminary Storage Module EstimatorStart an indicative modular storage calculation. Project Input Readiness ChecklistSee which details make a brief buildable. Modular vs Traditional StorageCompare the scope implications of each approach. Soakaway Volume CalculatorEstimate infiltration storage needs for a site. D400 Load & Cover SelectorReview cover depth and heavy-duty load criteria. Attenuation Sizing CalculatorShape a preliminary attenuation tank requirement. OSD Volume & Cost CalculatorExplore detention volume and budget inputs. OSD Material SelectorCompare material paths for the detention scope. Rainwater Capture EstimatorAssess capture potential for reuse planning. Runoff Destination RouterIdentify a suitable runoff management path. Site Type & Grade SelectorMatch site conditions to a system direction. 40HQ Freight Yield CalculatorPlan container utilisation for modular delivery.
  
  Knowledge guideDetention Tank Cost & Sizing Guide
  Useful next stepsCheck project inputs Compare storage scope Discuss a project brief
Blog
- Resources Knowledge hub Applications About Storm Manage Contact Request a quote
  
  Design intelligence Build confidence before the ground opens. Read practical guidance, match systems to applications and connect with the team when a project needs a tailored response.
  Stormwater Knowledge HubGuides, explainers and project planning resources. Highway & Carpark Drainage GuideDrainage considerations for paved traffic areas. Sports, Landscape & Podium GuideStorage below active and high-value surfaces. SuDS Drainage Development GuideA practical view of sustainable drainage planning. Detention Tank Cost & SizingWhat shapes capacity, cost and specification. Application FinderExplore systems by site type and performance need. About Storm ManageLearn about our manufacturing capability and team. Talk to an EngineerBring your site context to a focused conversation. Request a Project QuoteOpen the project enquiry form when you are ready.
  
  Featured guideSuDS Drainage Development Guide
  Explore by siteHighway & carpark Commercial & residential Sports & landscape
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Home
Products
- Solutions Detention tanks Soakaway crates OSD tanks Attenuation tanks Rainwater harvesting Applications
  
  Modular water management Specify a system around site performance. Explore storage, infiltration and harvesting systems with application-led guidance for durable project decisions.
  Soakaway CratesInfiltration modules for managed groundwater recharge. OSD Tank HubOn-site detention planning, materials and sizing. Stormwater Detention TanksHigh-capacity modular storage for controlled discharge. Attenuation TanksBuffer peak flows with engineered underground storage. Rainwater HarvestingCapture and reuse rainwater at project scale. All ApplicationsFind a system by site condition and performance target. Highway & Carpark DrainageReliable drainage beneath high-use paved surfaces. Commercial & ResidentialFlexible systems for compact development footprints. Infrastructure, Airport & IndustrialStorage designed for demanding civil works. Sports, Landscape & PodiumProtect usable ground while managing runoff below.
  
  Featured systemStormwater Detention Tank Hub
  Plan by applicationPaved surfaces Heavy-duty infrastructure Landscape & podium decks
Tools
- Engineering tools Storage estimator Project readiness System comparison Runoff routing Freight yield
  
  Early-stage project support Turn a brief into a clearer scope. Use practical calculators, selectors and checklists to prepare a more confident conversation with the project team.
  Preliminary Storage Module EstimatorStart an indicative modular storage calculation. Project Input Readiness ChecklistSee which details make a brief buildable. Modular vs Traditional StorageCompare the scope implications of each approach. Soakaway Volume CalculatorEstimate infiltration storage needs for a site. D400 Load & Cover SelectorReview cover depth and heavy-duty load criteria. Attenuation Sizing CalculatorShape a preliminary attenuation tank requirement. OSD Volume & Cost CalculatorExplore detention volume and budget inputs. OSD Material SelectorCompare material paths for the detention scope. Rainwater Capture EstimatorAssess capture potential for reuse planning. Runoff Destination RouterIdentify a suitable runoff management path. Site Type & Grade SelectorMatch site conditions to a system direction. 40HQ Freight Yield CalculatorPlan container utilisation for modular delivery.
  
  Knowledge guideDetention Tank Cost & Sizing Guide
  Useful next stepsCheck project inputs Compare storage scope Discuss a project brief
Blog
- Resources Knowledge hub Applications About Storm Manage Contact Request a quote
  
  Design intelligence Build confidence before the ground opens. Read practical guidance, match systems to applications and connect with the team when a project needs a tailored response.
  Stormwater Knowledge HubGuides, explainers and project planning resources. Highway & Carpark Drainage GuideDrainage considerations for paved traffic areas. Sports, Landscape & Podium GuideStorage below active and high-value surfaces. SuDS Drainage Development GuideA practical view of sustainable drainage planning. Detention Tank Cost & SizingWhat shapes capacity, cost and specification. Application FinderExplore systems by site type and performance need. About Storm ManageLearn about our manufacturing capability and team. Talk to an EngineerBring your site context to a focused conversation. Request a Project QuoteOpen the project enquiry form when you are ready.
  
  Featured guideSuDS Drainage Development Guide
  Explore by siteHighway & carpark Commercial & residential Sports & landscape
Company
- About Us
- Contact Us

Home – Soakaway Crate Hub – infiltration vs attenuation guide

Soakaway or Attenuation? Decision Guide

Six site questions to point you at an infiltration soakaway or a lined attenuation tank — and the crate build-up each one needs.

Q1

Has a soakage / percolation test shown the ground drains?

Yes — drains well

Marginal / slow

No / clay / not tested

Q2

Is the groundwater table well below the proposed base?

Yes — clear of it

Seasonally close

High / unknown

Q3

Is a suitable outfall available (sewer, watercourse, surface-water drain)?

Yes — outfall exists

No outfall

Q4

Does the authority require a restricted discharge rate?

Yes — restricted rate

No / infiltrate on site

Not sure yet

Q5

Any nearby foundations, contaminated ground or steep slope?

Yes — constraints

No — clear site

Q6

Will vehicles run over the finished surface?

Yes — trafficked

No — soft / pedestrian

Send your site details — get the crate build-up specified →

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Modular stormwater infrastructure

Engineered modular stormwater systems for reliable detention, infiltration, attenuation and rainwater harvesting.

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2014Production base established

8,000 m²Manufacturing base

60,000+ m³Annual capacity

400+ projectsDelivered across 30+ countries & regions

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Emailinfo@stormmanage.comWeChat+86 153 4532 4959BaseShenzhen, Guangdong, ChinaContactArden Du — Export Director