How BARR Plastics helps you?
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Design assistance
Expert assistance is available for designing stormwater attenuation and soakaway systems to meet the specific needs of your project.
Support includes addressing site challenges, ensuring compliance, and offering innovative solutions for effective stormwater management.
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Supply
Reliable and fast delivery of stormwater attenuation tanks ensures projects stay on schedule with minimal downtime.
With strategically placed stocking points and an efficient supply chain, materials are delivered quicker than other suppliers.
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Installation support
With extensive expertise in stormwater attenuation and soakaway systems, experienced professionals provide reliable installation support designed for long-term performance.
Backed by over a decade of specialized knowledge, efficient and dependable guidance ensures smooth implementation and lasting results.
Stormwater Management Systems
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Stormwater Modular Systems
Extensive In-Stock Inventory: We keep a wide range of products readily available,...
Efficient, Scalable, Sustainable
Solutions for Any Project
Municipal Infrastructure
- Flood Prevention: Large-scale retention systems and underground storage tanks manage runoff during heavy storms, reducing the risk of urban flooding.
- Regulatory Compliance: Our systems meet municipal stormwater guidelines, helping cities adhere to strict environmental standards.
- Infrastructure Longevity: Erosion control products and sediment capture systems protect roads, bridges, and drainage networks, extending their lifespan.
Commercial Developments
- Runoff Control: Modular infiltration systems and bio-retention basins handle large volumes of water efficiently, preventing pooling and property damage.
- Water Quality Management: Filtration units and separators remove pollutants like oil and debris from parking lots, ensuring clean runoff.
- Sustainability: Our solutions support green initiatives, helping businesses achieve environmental certifications like LEED.
Residential Systems
- Localized Flood Protection: Compact retention systems and rainwater harvesting tanks manage stormwater effectively in residential areas.
- Erosion Prevention: Erosion control mats and vegetative solutions protect lawns and gardens from stormwater damage.
- Enhanced Sustainability: Rainwater harvesting systems allow homeowners to reuse stormwater for irrigation, reducing water bills and conserving resources.

Faq
Your Questions Answered
What are the capacity options available for your retention and detention systems?
BARR Plastics offers the GRAF EcoBloc system, a modular solution for stormwater retention and detention. Each EcoBloc module has a gross volume of 225 liters (59.4 US gallons) and a reservoir volume of 217 liters (57.3 US gallons), providing a 96% storage coefficient. These modules can be stacked up to 13 layers high, allowing for installation depths of up to 5 meters (16.4 feet). For projects requiring greater depths, the EcoBloc Inspect Ultra modules can be installed at depths up to 7.5 meters (24.6 feet). If installation beyond 7.5 meters is necessary, approval from GRAF can be sought to accommodate specific project requirements. This design enables the construction of systems with capacities ranging from a few hundred gallons to several thousand gallons, tailored to specific project requirements.
For detailed information and assistance in configuring a system that meets your specific needs, it's recommended to contact a BARR Stormwater components specialist.
How do you ensure the durability of your systems against heavy loads, such as vehicular traffic?
The GRAF EcoBloc system is engineered to withstand heavy loads, including vehicular traffic, ensuring durability and reliability in various applications. Key features contributing to its robustness include:
- High Load-Bearing Capacity: The EcoBloc modules are designed to support substantial weights. For instance, the GRAF EcoBloc Inspect flex has a heavy-duty load-bearing capacity of up to 60 tons (HS-25) with a minimum earth covering of 800 mm (31.5 inches).
- Installation Depth Flexibility: These modules can be installed at depths of up to 5 meters (16.4 feet), even under heavy loads, allowing for up to 13 layers of stacking.
- Durable Design: Constructed with high-quality materials, the EcoBloc system is designed for a service life exceeding 50 years, ensuring long-term performance and sustainability.
By adhering to recommended installation guidelines, including appropriate earth covering and proper stacking, the GRAF EcoBloc system provides a robust solution capable of handling heavy vehicular loads in stormwater management applications.
Can these tanks be integrated with existing stormwater management infrastructure?
Yes, the GRAF EcoBloc system is designed for seamless integration with existing stormwater management infrastructure. Its modular design and versatile connection options allow it to adapt to various project requirements, enhancing or expanding current systems effectively.
Key Features Facilitating Integration:
- Versatile Pipe Connections: The EcoBloc system accommodates a wide range of pipe diameters, with connection surfaces up to DN 400 (approximately 16 inches). This flexibility ensures compatibility with existing pipelines, facilitating straightforward integration.
- Modular and Scalable Design: Each EcoBloc module has a gross volume of 205 liters (54.2 US gallons) and can be stacked up to 14 layers high, allowing for installation depths of up to 5 meters (16.4 feet). This modularity enables customization to meet specific capacity and spatial requirements, making it suitable for both small-scale and large-scale applications.
- Integrated Access Shafts: The system features the Ecobloc Inspect Smart Plus Shaft, which provides easy access for inspection and maintenance. This shaft can be positioned flexibly within the EcoBloc system, allowing for convenient monitoring and upkeep without disrupting existing infrastructure.
- High Load-Bearing Capacity: Designed to withstand heavy loads, the EcoBloc system supports up to 60 tons (HS-25) with appropriate earth covering. This robustness ensures durability and reliability, even when integrated into areas subjected to vehicular traffic.
By incorporating these features, the GRAF EcoBloc system offers a flexible and efficient solution for enhancing existing stormwater management infrastructure, addressing challenges such as increased runoff, regulatory compliance, and space constraints.
Do you offer technical support or consultation during the planning and installation phases?
Yes, BARR Plastics offers comprehensive technical support and consultation services during both the planning and installation phases of your stormwater management projects. Their services include:
- Design Assistance: Expert guidance in designing stormwater attenuation and soakaway systems tailored to your project's specific requirements.
- Installation Support: Experienced professionals provide reliable support to ensure smooth implementation and long-term performance of your stormwater systems.
For personalized assistance, you can contact BARR Plastics at +1-800-665-4499 or via email at info@barrplastics.com.
What certifications or quality standards do your products meet?
The GRAF EcoBloc system is engineered to meet rigorous quality standards and holds several notable certifications, ensuring its reliability and performance in stormwater management applications. Key certifications and standards include:
- British Board of Agrément (BBA) Certification: The EcoBloc Inspect flex and EcoBloc maxx units have been awarded BBA Agrément Certificates, confirming their compliance with UK Building Regulations and suitability for use in stormwater attenuation and infiltration systems.
- ISO 9001:2008 Quality Management System: The manufacturing processes for GRAF EcoBloc products are certified under the ISO 9001:2008 standard by DEKRA (Certificate 80613353), demonstrating a commitment to consistent quality and continuous improvement.
These certifications underscore the GRAF EcoBloc system's adherence to international quality and performance standards, making it a reliable choice for effective stormwater management solutions.
Do you have a dedicated account manager or point of contact for your clients?
Yes, BARR Plastics provides personalized support to their clients, ensuring a dedicated point of contact throughout your project. Their team of experts offers comprehensive assistance during both the planning and installation phases, tailoring solutions to meet your specific project requirements and site conditions. For more information or to discuss your project needs, you can contact BARR Plastics at +1-800-665-4499 or via email at info@barrplastics.com.

Lunch & Learn: EcoBloc Stormwater Solutions
Join our exclusive EcoBloc Lunch & Learn event designed for engineering professionals, contractors, and municipal planners. Gain expert insights into innovative stormwater management solutions offered by BARR.
What You’ll Learn:
EcoBloc Benefits:
- Up to 35 ft burial depth, reducing footprint and allowing placement under carparks and access roads.
- High load capacity: Supports HS25 (60 tons), making it ideal for heavy-use areas.
- Fully accessible & modular: Seamlessly integrates with rainwater harvesting and greywater systems.
Best Practices in Stormwater Management:
- Technical overviews of system design and sizing.
- Case studies from real-world applications.
- Best practices for effective stormwater attenuation and infiltration.
Interactive & Engaging Training:
- Refresher training for both new and existing staff.
- Live Q&A, quizzes, and prizes to make learning interactive and enjoyable.
Register now and take your stormwater management knowledge to the next level!
Sign Up for Lunch & Learn