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ACO StormBrixx®

Modular Water Tanks

StormBrixx is a geocellular stormwater storage solution designed to maximize capacity in areas with depth or space restrictions. Its modular, brick-bonding design ensures stability, while lightweight construction simplifies installation alongside existing utilities. Built for durability with a 50-60 year design life, StormBrixx offers reliable water management that reduces excavation needs and provides long-lasting performance in urban and industrial environments.

Along with general use, ACO StormBrixx excels in applications with unique requirements, such as:

  • Applications with High Water Tables
  • Restricted Depth Applications
  • Restricted Footprint Applications

Advantages of a Geocellular Stormwater Storage System

ACO StormBrixx provides a reliable alternative to chamber & stone systems, concrete vaults, and corregated metal pipes, with several benefits to consider.

  • Versatile with lightweight, stackable components for ease of shipping and handling
  • Sustainable polypropylene components designed for quick and simple installation
  • Robust Design through tank brick-bonded formation
  • Durable material and build, strong enough to last 50-60 years
  • Compliant to AASHTO HS-20 and HS-25 load conditions
  • Convenient open space and structural pillars allowing for simple access
  • Efficient use of space, with void ratios of 93.8-96.5%
PDF BROCHURE

Versatile and Sustainable

Stack of modular plastic pallets in blue and black, shown in an assembly stack with the top blue layer being aligned onto the lower pallets.
Stacks of black plastic chairs tied on pallets on a flatbed truck, with a circular tan building in the background.

The lightweight, stackable components of ACO StormBrixx offer a variety of assembly options to form an open, bonded structure. Each polypropylene component is designed for quick and simple installation, significantly reducing project timelines.

Exploded diagram of a modular seedling tray: black top modules, blue base tray, with red arrows showing how pieces fit together; close-up highlights a blue plug snapping into a connector.

Highly Robust Design

ACO StormBrixx systems are formed via brick-bonding, where top and bottom Half-Modules are placed and connected perpendicular to one another. This design creates an interconnected system that optimizes load transfer from top to bottom. ACO assists by providing detailed layer orientation drawings with your project in mind.

Further layers of Full-Modules can be stacked on top of each other and connected via Layer Connectors.

Durability and Compliance

Manufactured in the USA, every component of ACO StormBrix meets rigorous
AASHTO HS-20 and HS-25 load conditions (see table on pg. 6). Each system provides a reliable and enduring stormwater management solution, aligning with sustainable intrastructure goals.

  • Minimal product footprint for maximum stormwater runoff management
  • Design life of 50-60 years
HS-20 HS-20
8000 lbs
32000 lbs
32000 lbs
HS-25 HS-25
10000 lbs
40000 lbs
40000 lbs

Convenient & Efficient Build

Both the open space and structural pillars within
ACO StormBrixx can fill with stormwater for maximum capacity. This spacious structure also provides free passage through the system for inspection cameras and cleaning devices.

Along with its efficient use of space for holding stormwater, ACO StormBrixx’s build allows for structural adjustments, as Half-modules can be easily cut in half for customized integration within the overall system.

Side-by-side image: left shows a dark machine interior with vertical rails and a gear-like component; right shows a shiny curved metal interior surface with a knob at the bottom.
Blue plastic pallets with circular holes and a mesh top, shown stacked for shipping and storage use.

Multiple Module Heights

StormBrixx 300 SD & HD

  • Lowest profile
  • 300 SD compatible with 900 SD
  • HS-20 and HS-25-compliant versions

StormBrixx 600 HD

  • Largest HS-25 compliant model
  • Longest design life (60 years)

StormBrixx 900 SD

  • Highest profile
  • Greatest void ratio (96.5%)
  • Compatible with 300 SD

Configure Your Stormwater Management System

Plan and design your stormwater management system more efficiently with StormBrixx® Configurator.

  • Screenshot of the ACO StormBrixx Configurator UI with a left navigation panel and right content showing a 'Detention/Retention System' option and a large tank image.

    User-friendly Software

    Simulate and perfect your storage tank design and function with just a few clicks and entries.

  • 3D rendering of gray plastic modular floor tiles with circular perforations, shown in a stacked arrangement with red measurement lines indicating length and width as a dimension diagram

    Adjustable Dimensions

    Get your stormwater tank dimension, volume, and excavation area calculations right.

  • Stacked black plastic modular crates with circular perforations, a blue hose entering from the left.

    Customize Your Build

    Adjust connection, ventilation, and overflow options, along with access for inspection and maintenance.

  • Person viewed from behind watching a 3D modeling screen displaying blue lattice structures in Blender-like software

    Efficient Results

    Receive your results along with specification drawings, along with further ACO specialist assistance.

  • StormBrixx 900 SD

    StormBrixx 900 SD

    • 35.98″ module height
    • Polypropylene components
    • Meets AASHTO HS-20
    • Customized tank build
    • 96.5% void ratio
  • StormBrixx 300 HD

    StormBrixx 300 HD

    • 12.08″ module height
    • Polypropylene components
    • Meets AASHTO HS-25
    • Customized tank build
    • 93.8% void ratio
  • StormBrixx 300 SD

    StormBrixx 300 SD

    • 12.00″ module height
    • Polypropylene components
    • Meets AASHTO HS-20
    • Customized tank build
    • 93.8% void ratio
  • StormBrixx 600 HD

    StormBrixx 600 HD

    • 24.18″ module height
    • Polypropylene components
    • Meets AASHTO HS-25
    • Customized tank build
    • 96.0% void ratio
  • Product Literature
    • ACO StormBrixx Product Line Overview PDF
    • ACO StormBrixx Inspection and Maintenance Guide PDF
    • ACO StormBrixx Load Performance Guide PDF
    • ACO StormBrixx Module Geometry Comparison PDF
    • ACO StormBrixx Sediment Filtration Tunnel Guidance PDF
    • ACO StormBrixx Site Installation Submittal Guide PDF
  • Standard Installation Details
    • ACO StormBrixx – Detention – Interior Sediment Filtration Tunnel PDF
    • ACO StormBrixx – Infiltration – Interior Sediment Filtration Tunnel PDF
    • ACO StormBrixx – Infiltration – Perimeter Sediment Filtration Tunnel PDF
Semi-truck with flatbed trailer carrying stacked black plastic form panels secured with blue straps at a mountain construction site.

ACO StormBrixx® Overview

Additional Product Information

Quick reference for ACO StormBrixx features, system comparisons, and specifications.

tool icon set_StormBrixx Configurator

StormBrixx Configurator

Customize your ACO StormBrixx system features to meet your needs.

tool icon set_StormBrixx Calculator (1)

StormBrixx Structural Calculator

This calculator helps determine which ACO StormBrixx system is best suited for your project.

HydroCAD Support

HydroCAD provides built-in support for modeling the ACO StormBrix® chamber system.

NJDEP/NJCAT Testing

The ACO StormBrixx Sediment Filtration Tunnel New Jersey laboratory tests available here.

Under‑construction foundation with a large block of black modular void forms stacked on a concrete base, surrounded by scaffolding, rebar columns, and gray tarps at a construction site.

Highly Customizable Build

ACO StormBrixx tanks can be built to suit specific depths and circumvent existing infrastructure, such as wiring, piping, pillars, or entire buildings.

3D render of modular plastic construction tiles with hollow cylindrical connectors in blue, black, and white.

Brick-Bonded Structural Strength

Interconnecting half-layers of ACO StormBrixx in different patterns substantially increases the overall structural strength of the tank.

Construction workers in high-visibility vests and hard hats set black modular void-form blocks in a grid at a construction site with dirt piles in the background,

Lightweight, Durable Material

ACO StormBrixx components are easily transported and carried. Once installed, design life is 50-60 years depending on the system.

Automated industrial press forming black accordion-type flexible components on a metal platen.

AASHTO HS-20/HS-25 Compliant

Minimum lightweight yet durable wall thickness. Components are easy to handle and manipulate during staging and installation.

Flatbed truck carrying tall stacks of black modular fencing panels secured with blue straps, with snow-capped mountains in the background.

Stackable Components

ACO StormBrixx modules, side panels, and other components stack within themselves, significantly reducing storage space.

Dark metallic corridor with vertical panels, partially flooded floor reflecting the tunnel’s structure toward a distant lattice end point.

High Void Ratio

Void ratios of 93.8-96.5% are possible due to hollow pillars and minimal surface area within an ACO StormBrixx tank.

Close-up of an industrial robot component inside a metallic rack with bright lights shining on it.

Ease of Access

Inspection and maintenance are performed from access points that are preplanned to provide access to the entirety of an ACO StormBrixx installation.

Four workers in orange safety vests and helmets assemble a perforated modular foundation on a construction site.

Suits Depth Requirements

ACO StormBrixx 300, 600, and 900 provide variable tank heights, which can be further manipulated with multiple layers, half-layers, and 900+300 tanks.

Row of perforated black plastic mats with circular patterns laid along a construction site beside stacked pallets.

Sediment Tunnel Option

Confirmed to capture 82.7% of total suspended solids when designed as suggested by ACO.

Series Comparison
Row of tall, ribbed gray cylindrical components standing upright in a grid on a modular gray tray.
900 SD
Plastic grid trays holding ribbed, conical mold cores in dark and light colors.
600 HD
Stacked plastic pallets with mushroom-shaped posts for storage and transport.
300 SD
Stackable plastic pallets with circular hollow feet and a grid deck, shown in two layers (darker lower pallet and lighter upper pallet) for industrial storage.
300 HD
Half-Module Dimensions 47.24” (1200 mm) 23.62” (600 mm) 19.44” (494 mm) 47.56” (1208 mm) 23.78” (604 mm) 13.50” (343 mm) 47.24” (1200 mm) 23.62” (600 mm) 7.44” (189 mm) 47.56” (1208 mm) 23.78” (604 mm) 7.51” (191 mm)
Assembled Module Height 35.98” (914 mm) 24.18” (614 mm) 12.00” (305 mm) 12.08” (307 mm)
Half-Module Weight 21.6 lbs (9.8 kg) 17.0 lbs (7.7 kg) 13.8 lbs (6.3 kg) 17.0 lbs (7.7 kg)
Full-Module Void Ratio² 96.5% 96.0% 93.8% 93.8%
Full-Module Volume² Net: 22.42 ft³ (0.63 m³) Gross: 23.24 ft³ (0.66 m³) Net: 15.18 ft³ (0.43 m³) Gross: 15.82 ft³ (0.45 m³) Net: 7.28 ft³ (0.21 m³) Gross: 7.75 ft³ (0.22 m³) Net: 7.42 ft³ (0.21 m³) Gross: 7.91 ft³ (0.22 m³)
Number of Full Layers³ 1-3 1-4 1-3 1-3
Vertical Strength⁴ 50.8 psi (350 kPa) 66.0 psi (455 kPa) 50.8 psi (350 kPa) 66.0 psi (455 kPa)
Lateral Strength⁴ 10.2 psi (70 kPa) 13.8 psi (95 kPa) 10.2 psi (70 kPa) 13.8 psi (95 kPa)
Min. Cover Depth for HS-20 24 20 24 20
Min. Cover Depth for HS-25 NA 24 NA 24
Max. Cover Depth¹ 6.50’ (2.00 m) 11.16’ (3.4 m) 6.50’ (2.00 m) 11.16’ (3.40 m)
Design Life 50 years 60 years 50 years 60 years
  1. May vary based on system height and subsurtace conditions. Contact ACO for more information.
  2. A Full-Module is equal to two Halt-Modules connected vertically (see adjacent drawing).
  3. The height of one layer is equal to the height of one Full-Module. Please consult ACO for system heights greater than four layers.
  4. Modules only (no backfill or top covers).
Cross-sectional side view of four modular units with vertical height arrows labeled 'Full-Module Height' on the left.