One Core Challenge
Extreme Weather & Extreme Loads – How to Guarantee 50 Years of Underground Structural Safety?
Frequent storms force deeper burial. Heavy traffic and saturated soils exert continuous pressure. Ordinary modules creep, buckle, and settle.
The YYRH-MR series, through molecularly modified materials and topological design, directly answers with >85T vertical redundancy and >45T lateral rigidity.
＞85T
Vertical Redundancy
＞45T
Lateral Rigidity
YYRH-MR SeriesUnderground Storage Solutions from Municipal to Landscape ApplicationsWhat is the YYRH-MR Series
The YYRH-MR product line, manufactured by Yingyuan, is a comprehensive suite of modular polypropylene (PP) stormwater attenuation geocellular crates. These interlocking underground modules assemble into subsurface basins for stormwater detention, infiltration, and harvesting. The series encompasses four primary models (1000-HD, 1000-EW, 1200-SD, 1200-EW), featuring vertical load ratings from 45 to 85 tons and lateral load ratings from 15 to over 45 tons.
All models share a >92% void ratio, delivering high storage density within a compact excavation footprint.
4Models,
spanning 2 dimensional
platforms
Load Ratings from
45T to 85T(Vertical),
15T to 45T+(Lateral)
3Application Tiers:
· Heavy-Duty Infrastructure · Municipal Drainage · Landscape & Residential 
Burial Depth Range:
1.0m to 8.0m (Varies by model)Site Scenario
Recommended Model
Vertical Load Rating
Key Design Considerations
Reinforced Traffic Roads & Highways
1000-HD
85T
Requires HS-25 traffic load compatibility; excavation depth is generally 4.0–8.0 m depending on overburden requirements.
Municipal Stormwater Drainage
1200-SD
85T
High area efficiency; dimension of 1200×600×300 mm reduces unit quantity per cubic meter and cuts assembly labor for large municipal contracts.
Ports & Logistics Yards
1000-HD + Deep Burial Configuration
85T
Maximum burial capacity (≥8.0 m with engineered backfill); site-specific geotechnical technical verification available via Yingyuan Engineering Department consultation.
Landscape & Public Parks
1000-EW
70T
Economical heavy-duty grade, sufficient for pedestrian and light maintenance vehicle loads under 1.0–2.5 m overburden. Cost-optimized for soft landscape applications.
Residential Communities
1200-EW
45T
Entry-level budget model; 45T vertical bearing capacity meets load requirements for typical residential driveways and light vehicles (≤5T axle load).
Commercial & Complex Developments
1200-SD
85T
Meets fire truck passage load (AASHTO H-20) for parking lot structures while maintaining fast installation speed with large-size modules.
Selection Note: All load ratings above refer to the Ultimate Limit State (ULS) values per the EN 17152-1 testing protocol. Serviceability Limit State (SLS) values are approximately 55% of the stated ULS figures. Always consult a qualified civil or geotechnical engineer for site-specific structural validation.
Redefining Modular Rainwater
Harvesting SystemsThe ultimate compressive strength of our heavy-duty rainwater modules is not achieved simply by thickening the plastic walls, but is the product of a combination of advanced materials science and complex spatial geometry. Yingyuan Environment uses molecularly modified polypropylene (PP) to manufacture the structural modules, ensuring unparalleled physical stability and chemical inertness.
Harvesting SystemsThe ultimate compressive strength of our heavy-duty rainwater modules is not achieved simply by thickening the plastic walls, but is the product of a combination of advanced materials science and complex spatial geometry. Yingyuan Environment uses molecularly modified polypropylene (PP) to manufacture the structural modules, ensuring unparalleled physical stability and chemical inertness.
YYRH-MR-1000-HD
YYRH-MR-1000-EW
YYRH-MR-1200-SD
YYRH-MR-1200-EW
Moduble model:
Length/ft :
Wihth/ft :
hegiht/ft
Cover Depth:
≤ 6'7"(0-2m)
< 6'7" ≤ 9'10"(2-3m)
< 9'10" ≤ 6'5"(3-5m)
< 16'5" ≤ 26'3"(5-8m)
Surface Load:
Green space (1T)
Parking space (2T)
Small vehicle lane (3T)
Medium vehicle lane (5T)
Heavy vehicle lane (10T)
START
YYRH-MR-1000-HD Stormwater Crate
Extreme Overloading
50-Year Creep Certification
Extreme Weather
Primary Engineering Parameters:
Model Number:
YYRH-MR1000-HD
Dimensions (L×W×H): 1000 × 500 × 200 mm
Single Unit Mass: 6.7 kg
Vertical Loading Pressure: > 85T
Lateral Loading Pressure: > 45T
Dimensions (L×W×H): 1000 × 500 × 200 mm
Single Unit Mass: 6.7 kg
Vertical Loading Pressure: > 85T
Lateral Loading Pressure: > 45T
YYRH-MR-1000-EW Stormwater Crate
Commercial Landscaping Solution
Hand-Assembly Friendly
Primary Engineering Parameters:
Model Number:
YYRH-MR1000-EW
Dimensions (L×W×H): 1000 × 500 × 200 mm
Single Unit Mass: 6.8 kg
Vertical Loading Pressure: > 70T
Lateral Loading Pressure: > 30T
Dimensions (L×W×H): 1000 × 500 × 200 mm
Single Unit Mass: 6.8 kg
Vertical Loading Pressure: > 70T
Lateral Loading Pressure: > 30T
YYRH-MR-1200-SD Stormwater Crate
extreme live loads
Expert for 85T Deep Burial
Primary Engineering Parameters:
Model Number:
YYRH-MR1200-SD
Dimensions (L×W×H): 1200 × 600 × 300 mm
Single Unit Mass: 8.7 kg
Vertical Loading Pressure: > 85T
Lateral Loading Pressure: > 30T
Dimensions (L×W×H): 1200 × 600 × 300 mm
Single Unit Mass: 8.7 kg
Vertical Loading Pressure: > 85T
Lateral Loading Pressure: > 30T
YYRH-MR-1200-EW Stormwater Crate
Economical for Light-Duty
Ideal for Residential/Park Projects
Primary Engineering Parameters:
Model Number:
YYRH-MR1200-EW
Dimensions (L×W×H): 1200 × 600 × 300 mm
Single Unit Mass: 8.75 kg
Vertical Loading Pressure: > 45T
Lateral Loading Pressure: > 15T
Dimensions (L×W×H): 1200 × 600 × 300 mm
Single Unit Mass: 8.75 kg
Vertical Loading Pressure: > 45T
Lateral Loading Pressure: > 15T
01
Modular Structural Interlocking:Tongue-and-groove + vertical pins, no welding/bolts/adhesives.Value Engineering Impact：4-person team assembles 200-300 m³/day.
02
High Void Ratio (>92%):Thin-wall PP, open-pillar geometry.Value Engineering Impact：100 m³ storage needs only ~105 m³ footprint.
03
Geotextile & Geomembrane CompatibilityDesigned for standard wraps, smooth pillars prevent puncture.Value Engineering Impact：No custom accessories needed.
04
Recyclable PolypropyleneVirgin/recycled PP, pH 4-10 resistant, no microbial degradation.Value Engineering Impact：50-year life, zero maintenance, LEED v4.1 support.
05
BBA-Certified Structural Validation：CABR-BETC full-scale testing: vertical/lateral, cyclic, creep.Value Engineering Impact：Pre-validated data speeds up approvals.
Backed by Verified Data & Global Certifications
Yingyuan Environment’s YYRH-MR series modules have undergone rigorous third-party testing at China’s National Center for Quality Inspection & Test of Building Engineering (CABR). We provide original destructive test reports, long-term creep extrapolations (50 years), and full material traceability. No laboratory “ideal values” – only data you can trust for municipal bids.
CABR 50-Year Creep Test ReportCE EN 17152 ComplianceISO 9001:2015AAA Credit Enterprise
Ready to Specify the Right Module for Your Next Project?
01
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02
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03
Free Technical White Paper
How to Avoid Over-Engineering and Under-Specifying Stormwater Modules.
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1-Year Product Warranty + 15-Year Structural Performance Pledge
Free replacement for material/manufacturing defects.
24-Hour Technical Response
Acknowledgement within 4 business hours, substantive reply within 24.
“2-Hour Solution” On-Site Support
Clear engineering solution within 2 hours for any installation issue.
100% Pre-Shipment QA/QC
Verified dimensions, void ratio, and loading photos before dispatch.
FAQ
Frequently Asked Questions for
Procurement Managers & Civil Engineers
What is your main product?Do you provide customization services?