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Heavy Duty Stormwater Crates

Modular Stormwater Engineering
One Platform, Seven Validated Application Scenarios

From 85-tonne truck-rated heavy-duty infrastructure to sponge city residential soakaways, Yingyuan's three module series (HD, EW,SD) deliver engineered drainage solutions validated across 7 distinct application scenarios. 400 m³/day reclaim capacity. Match your project to the right configuration in under 3 minutes.
Match My Project

The Modular Stormwater Imperative

Why Site Conditions, Not Module Specs,

Should Drive Solution Design

From Module Selection to Scenario Engineering
Conventional modular stormwater procurement begins with a catalog — the engineer selects a module based on compressive strength (kN/m²) and void ratio (%), then works outward to fit site constraints. This module-first approach is inverted. Yingyuan's scenario-first methodology starts with the site condition profile — traffic loading regime, burial depth, groundwater position, soil infiltration rate, catchment land use, regulatory framework, maintenance access — and derives the module series and accessory configuration as outputs. This inversion reduces the most common design error: specifying a module that meets compressive strength criteria but fails on hydraulic throughput, maintenance accessibility, or long-term sedimentation management.
The Seven-Scenario Framework
Through analysis of 800+ completed installations across Southeast Asia, the Middle East, Africa, and China domestic market, yingyuan has classified modular stormwater applications into seven archetypal engineering scenarios. Each scenario maps to a unique combination of loading condition, hydraulic function (detention / infiltration / harvesting), regulatory standard set, maintenance interval, and lifecycle cost profile. This framework eliminates the guesswork from module selection and allows engineers to initiate design from the scenario that best matches their project — with full traceability back to the component-level specifications.
Authority and Validation Footprint
yingyuan modules and systems are tested in strict accordance with the CJ/T 542-2020 Chinese Industry Standard. Independently verified by the Shanghai Municipal Engineering Testing Centre (SMETC), the system is backed by over 5 years of field performance data from monitored installation projects. The HD Series holds an SL-Zh-8 load rating, representing an ultimate axial load capacity of 85 tons (equivalent to 187,000 lbs), formally certified by Report No. SMETC-2023-SL-0472.
Seven Engineering Scenarios
Heavy-Duty InfrastructureParking, Roads, Ports
HD Heavy-Duty Series (SL-Zh-8, 85T axial)
4-6m burial depth, concrete cost escalation (traditional cast-in-place tanks at 6m depth exceed modular system cost by 2.3-4.1×), crane-dependent construction logistics on constrained urban sites.
HD modules at 200mm height, 92% void, with reinforced PE clips, 400g/m² geotextile, 2.0mm HDPE liner, D400 ductile iron covers. No crane required — manual assembly 40-60 modules per 8-hour shift per 2-person crew. Design life 50 years at 8m burial under D400 cyclic loading.

Scenario Framework Summary

  • MetricValue
  • Total scenarios covered7 distinct engineering archetypes
  • Module series deployedHD (85T), EW (45T), SD (85T) — 3 series
  • Load range coveredPedestrian A15 through Airport gear loading
  • Burial depth range0.5m (minimum cover) to 6m (HD deep burial verified)
  • Hydraulic functionsDetention, infiltration, harvesting, hybrid — 4 modes
  • Installed base reference800+ installations across 12 countries
  • Longest monitored installation7 years continuous performance data (commercial site, Shanghai)
  • Technical support languagesEnglish, Chinese, Spanish, Arabic (engineering documents)

Deployed Across Seven Scenarios Selected Project Profiles

Scenario 1 — Heavy-Duty

International Airport Cargo Apron, Southeast Asia

  • ParameterValue
  • LocationSoutheast Asia (NDA-restricted)
  • System typeDetention — impermeable
  • Storage volume2,400 m³
  • Module seriesHD Heavy-Duty, 200mm height
  • Burial depth5.2m (crown to apron surface)
  • Design loadAirbus A350-900 gear loading (PCA 65/R/D/W/T)
  • Key outcomeInstalled in 14 days (4-person crew). Post-construction 2-year monitoring: no settlement exceeding 8mm, no structural deformation on CCTV inspection.

Scenario 2 — Sponge City

Municipal Green Corridor, Eastern China

  • ParameterValue
  • LocationEastern China, Tier-2 city
  • System typeInfiltration — permeable
  • Storage volume850 m³ (distributed across 14 soakaway nodes)
  • Module seriesEW Economy, 200mm height
  • Burial depth1.8m (landscaped surface)
  • Design loadPedestrian (A15 cover)
  • Key outcomeSponge city compliance certified by provincial housing authority. Infiltration rate maintained at 85% of design after 3 years. Maintenance: annual CCTV inspection, no intervention required.

Scenario 4 — Commercia

Logistics Distribution Centre, Middle East

  • ParameterValue
  • LocationMiddle East (UAE)
  • System typeHybrid — detention + harvesting
  • Storage volume1,100 m³ (800 m³ detention + 300 m³ harvesting)
  • Module seriesHD under traffic, EW under landscape
  • Burial depth3.0m (finished yard level)
  • Design loadD400 (forklift + HGV yard)
  • Key outcomeHarvested rainwater supplies 70% of landscape irrigation demand. Detention discharge regulated to 8.2 L/s (pre-development rate). Estidama Pearl Rating System: 2 credits achieved.

Engineering Standards Matrix Regulatory Compliance by Scenario

  • StandardScopeApplicable To
  • CJ/T 542-2020Modular rainwater storage units — China industry standardAll scenarios in China and projects referencing Chinese standards
  • CJJ 311-2020Sponge city construction technical specificationScenario 2 (Sponge City) — Chinese national code

Traditional Cast-in-Place Reinforced Concrete Tank

  • AspectDetail
  • Construction methodExcavation → blinding → rebar fixing → formwork → concrete pour → 28-day cure → backfill. Total duration: 35-50 days for 500 m³. Requires crane for formwork and concrete skip.
  • Cost at 5m burial2.3-4.1× modular system cost due to wall thickness escalation (500mm+ at 5m), double-layer rebar, and dewatering during construction.
  • Void ratio100% (hollow tank — but unit cost per m³ stored is not comparable due to structural cost).
  • Maintenance accessManhole only — limited visual inspection; structural defects (cracking, spalling) require confined-space entry.
  • Carbon footprint250-350 kg CO₂e per m³ storage (cement is ~0.9 kg CO₂/kg).

Yingyuan Modular Geocellular System

  • AspectDetail
  • Construction methodExcavation → geotextile → liner (if detention) → module assembly → top geotextile → backfill. Total duration: 5-8 days for 500 m³ (4-person crew). No crane required.
  • Cost at 5m burialBase cost. Lateral earth pressure carried by module columns; burial depth adds backfill material but not structural cost.
  • Void ratio92% (module internal). System void ratio including perimeter: 90-92% typical.
  • Maintenance accessCCTV via inspection riser — full internal surface visible; module-by-module replacement possible (top-down excavation to affected row).
  • Carbon footprint40-60 kg CO₂e per m³ storage (virgin PP recycled at end-of-life; carbon benefit of avoided concrete).

Engineered Sustainability:

Decarbonizing Underground Infrastructure

At Jiangsu yingyuan, we don’t just manage stormwater; we are committed to shifting the carbon economics of global water infrastructure. Traditional cast-in-place concrete attenuation tanks are carbon-intensive, high-emission solutions. Through advanced modular polymer materials science, we provide modern urban and industrial developments with alternatives that deliver measurable decarbonization benefits.

Lifecycle Carbon Assessment (LCA) & Academic Validation

Our system-level carbon footprint data for the HD and EW series is deeply rooted in rigorous materials science validation. Leveraging the academic research framework of Southeast University in civil engineering and material lifecycles, we have systematically quantified the creep resistance and recyclability of our products. Data indicates that compared to equivalent reinforced concrete tanks, the Jiangsu yingyuan modular system reduces overall carbon emissions by approximately 78% - 85% across the manufacturing, transport, and on-site installation phases.

Closed-Loop Material Economy

100% End-of-Life Recyclability

Manufactured from modified, high-purity polypropylene (PP), our modules are completely recyclable at the end of their service life (which spans up to 50 years). This ensures the materials can be repurposed, preventing them from becoming permanent construction waste in landfills.

Non-Toxic & Water-Safe

Our PP raw materials and fasteners fully comply with EU REACH and RoHS standards. Even under long-term submersion and anaerobic conditions, they will never leach microplastics or harmful chemicals into the soil or groundwater aquifers.

Green Building Credit Support

Our system directly assists your projects in securing valuable points for LEED (USA), BREEAM (UK), and the Chinese Assessment Standard for Green Building, specifically within categories such as "Stormwater Management" and "Innovative Materials."

System-Wide Advantages Why Modular Across All Seven Scenarios

Feature: Standardized Component Architecture

Across all three module series (HD, EW, SD), Module Dimensions and connection clip geometry are standardized. This means geotextile cutting plans, liner seam layouts, and connector clip logistics are identical regardless of which series is specified. Field crews trained on one series are immediately productive on any other. Spare parts inventory rationalization: 4 connector clip SKUs cover 3 module series across 7 scenarios. Operations benefit: site supervisors carry one reference dimension set; clip installation training is transferable; BOM generation logic is unified.
Feature: Void Ratio Advantage (92% Continuous)

At 92% void ratio, Yingyuan modules deliver 2-6% more storage volume per cubic meter of excavation than comparable geocellular systems (typical 90-92% void). For a 500 m³ storage requirement, this translates to 10-15 m³ less excavation — approximately 1-2 truckloads of spoil saved, with corresponding reduction in off-site disposal cost and carbon. The continuous (unbaffled) internal geometry also supports uninhibited CCTV inspection along any axis.
  • SeriesAxial UltimateLateral UltimateCreep (10,000h)
  • HD Heavy-Duty≥ 850 kN/m² (85T equivalent)≥ 450 kN/m²≤ 2.0% deflection
  • EW Economy≥ 450 kN/m² (45T equivalent)≥ 150 kN/m²≤ 2.5% deflection
  • SD Standard≥ 850 kN/m² (85T equivalent)≥ 300 kN/m²≤ 3.0% deflection

System-Wide Advantages Why Modular Across All Seven Scenarios

Authority and Validation Footprint

Yingyuan modules and systems are tested, certified, and independently verified across multiple jurisdictions.

The matrix below documents every certification and test report relevant to the seven engineering scenarios — from international ISO standards to scenario-specific structural verification. Each entry is traceable to a certificate or test report available on request.

Certification & Verification Matrix

  • AuthorityStandardScopeitem.t4
  • ISOISO 9001:2015Quality Management System — design, manufacturing, supply chain, and post-delivery support for modular stormwater management systemsCertified
  • ISOISO 14001:2015Environmental Management System — lifecycle environmental impact, recycled content tracking, manufacturing waste reduction, carbon footprint managementCertified
  • MOHURD (China)CJ/T 542-2019 (SL-Zh-8)Modular rainwater storage units — heavy-load classification; verified by SMETC Report SMETC-2023-SL-0472 with full-scale crush test to 850 kN/m²Certified
  • EU CPR 305/2011CE MarkingConstruction Products Regulation — harmonized technical specification compliance for European market access; issued via notified body assessment under EN 17152-1Certified
  • EU Regulation 1907/2006 & 2011/65/EUREACH / RoHSChemical substance registration and hazardous substance restriction — virgin PP resin, HDPE liner, and EPDM gasket material compliance for EU importCertified
  • CABR-BETC (China Academy of Building Research)Structural VerificationIndependent third-party structural analysis report — finite element modelling and full-scale physical test correlation for HD module at 200mm column height under combined axial + lateral loadingCertified
  • yingyuan InternalInstallation Track Record800+ completed installations across 12 countries; longest monitored site at 7 years continuous performance data (commercial, Shanghai); all installations documented with as-built records and commissioning reportsVerified
Mutual Recognition and Cross-Jurisdiction AcceptanceCJ/T 542-2019 reports are accepted by engineering authorities across ILAC-MRA signatory economies. EN 17152-1 compliance provides the technical basis for CE marking. ISO 9001 and ISO 14001 certificates are issued under UKAS-accredited certification body with global recognition.

Corporate Social Responsibility:

Safeguarding Community Water Resilience & Supply Chain Ethics

The social responsibility of Jiangsu yingyuan extends far beyond the boundaries of our manufacturing facility. As a cornerstone supplier in global stormwater management, we recognize that our systems directly impact the safety of municipal flood defenses, the lifeline of agricultural irrigation, and the cleanliness of public waterways.

Building Climate-Resilient Communities

In the face of increasingly frequent extreme rainfall events, our underground attenuation systems serve as the invisible shield protecting vulnerable urban communities from pluvial flooding. In developing regions and water-scarce areas, our Scenario 7 (Agricultural & Rural Water Management) systems are empowering local farmers to harvest, purify, and reuse stormwater with minimal maintenance costs—securing food production while preventing diffuse agricultural pollution from damaging local aquatic ecosystems.

Human-Centric Manufacturing & Compliant Supply Chain

Premium engineering products originate from a respected and well-cared-for workforce.

Labor Rights & Occupational Safety

Our modern intelligent manufacturing base in Jiangsu rigorously enforces occupational health and safety protocols that exceed baseline OSHA requirements and align with advanced OHSAS/ISO 45001 standards. We provide transparent career advancement pathways, comprehensive healthcare benefits, and modern, ergonomically designed work environments.

Labor Rights & Occupational Safety

Responsible Sourcing

Responsible Sourcing

Local Technical Empowerment

Local Technical Empowerment

Find Your Scenario in Three Steps

NO.1
Define Your Loading Condition
  • Heavy traffic (truck, bus, forklift, airport) → HD Heavy-Duty Series
  • Light vehicle (car parking, access road, occasional delivery van) → EW Economy Series
  • No traffic (landscape, garden, rain garden, bioswale) → EW Economy or SD Standard Series
    • NO.2
    Define Your Hydraulic Function
  • Detention (hold and slowly release — impermeable system with liner) → Add HDPE liner + vortex flow control
  • Infiltration (soak into ground — permeable system, no liner) → Geotextile wrap only
  • Harvesting (store for reuse — impermeable system with liner, pump, and treatment) → Add liner + pump pedestal + floating filter + calmed inlet
    • NO.3
    Define Your Regulatory & Site Constraints
  • China national/provincial standard →Specify CJ/T 542 + local sponge city / drainage code
  • UK / SuDS / CIRIA C737 →BS 8515, SAB adoption criteria
  • Middle East / Estidama / GSAS →CIRIA C737 + local municipality drainage code
  • Other / not sure →Send your project brief; our engineers map the applicable standards
    • Ready to match your project to the right scenario?Response Within 24 Hours
    FAQ
    Frequently Asked Questions for
    Wholesale & Projects
    FAQ IconAre the materials safe for environmentally sensitive projects?

    Yes. The units are manufactured from molecular-level modified, food-grade safe polymers. This formulation eliminates toxic leaching, preserving groundwater quality while maintaining structural strength.

    FAQ IconWhat prevents the crates from collapsing under deep burial?

    The internal high-precision fluted and ribbed columns provide a quantified lateral resistance of >45T. This neutralizes severe soil shear forces and hydrostatic pressures at extreme installation depths up to 8.0 meters.

    FAQ IconHow do these crates comply with AASHTO H-20 standards?

    The >85T vertical loading capacity drastically exceeds the pressure exerted by the 32,000-lb axle loads defined in AASHTO H-20. This physical redundancy ensures zero structural failure under specified heavy commercial traffic.