Products

YYRH-MR SeriesRedefining Modular Rainwater Harvesting Systems

What 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 dimensionalplatforms

Load Ratings from

45T to 85T(VerticalVertical),

15T to 45T+(Lateral)

3Application Tiers:

· Heavy-Duty Infrastructure · Municipal Drainage

Burial Depth Range:

1.0m to 8.0m (Varies by model)

Application ScenariosMatching Your Site to the Recommended ModelSelecting the correct stormwater module begins with determining the installation site’s soil cover conditions and regulatory requirements. Each YYRH-MR model is engineered for specific performance metrics. The matrix below maps six common site categories to their optimal module selection.

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 Systems

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

85-Ton Vertical Crush Strength Specifications & Benchmarks

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 (Exceeds standard heavy-duty pavement requirements)
Lateral Loading Pressure: > 45T (High resistance to deep soil shear forces and hydrostatic pressure)

YYRH-MR-1000-EW Stormwater Crate

70-Ton Vertical Crush Strength Specifications & Benchmarks

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: > 55T (Exceeds standard heavy-duty pavement requirements)
Lateral Loading Pressure: > 20T (High resistance to deep soil shear forces and hydrostatic pressure)

YYRH-MR-1200-SD Stormwater Crate

85-Ton Vertical Crush Strength Specifications & Benchmarks

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: > 60T (Exceeds standard heavy-duty pavement requirements)
Lateral Loading Pressure: > 25T (High resistance to deep soil shear forces and hydrostatic pressure)

YYRH-MR-1200-EW Stormwater Crate

45-Ton Vertical Crush Strength Specifications & Benchmarks

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: > 35T (Exceeds standard heavy-duty pavement requirements)
Lateral Loading Pressure: > 15T (High resistance to deep soil shear forces and hydrostatic pressure)

Engineering AdvantagesThe Inherent Traits of Every YYRH-MR ModuleBeyond model-specific performance specs, the entire YYRH-MR product line shares a foundational set of design advantages that define the series’approach to underground stormwater storage. Regardless of the model selected, the following five attributes apply.

Modular Structural Interlocking:Utilizes a tongue-and-groove interlocking mechanism and vertical stacking pins to form a monolithic basin structure without welding, bolts, or adhesives. The interlocking geometry resists backfill compaction shear and foundation settlement.

Eliminates the need for specialized installation crews. A standard 4-person team equipped with rubber mallets can assemble 200–300 m³ per day.

High Void Ratio (>92%):All models exceed a 92% void ratio, achieved through thin-wall PP structures (wall thickness 3.0–4.5mm) and open-pillar geometry.

Reduces excavation volume. A 100 m³ storage requirement necessitates only an approx. 105 m³ module footprint, significantly lower than the 120–150 m³ required by alternative systems.

Recyclable Polypropylene Construction:Manufactured from virgin or recycled PP resin. It is corrosion-resistant, withstands pH 4–10 soil environments, and is immune to microbial degradation.

50-year design life with zero maintenance. End-of-life recyclability supports LEED v4.1 credit scoring. Single module weights range from 6.7–8.75 kg, allowing for manual handling.

Geotextile and Geomembrane Compatibility:Module geometry is specifically designed for wrapping with standard non-woven geotextiles (≥200 g/m²) and/or HDPE geomembranes (≥1.0 mm). Smooth outer pillar profiles prevent envelope puncture or abrasion. Supports both infiltration and detention configurations.

Eliminates the need for custom wraps or proprietary accessories; standard geosynthetics from any major supplier can be utilized.

BBA-Certified Structural Validation:Full-scale structural load testing has been conducted per CABR-BETC, documenting ultimate vertical/lateral loads, cyclic fatigue, and long-term creep performance.

Pre-validated data accelerates design review timelines, supporting faster planning and permitting approvals.