Stormstore™ Precast Concrete Attenuation Tanks & Chambers

SuDS Compliant Stormwater Management

To combat flooding and manage surface water effectively, UK building authorities require strict adherence to Sustainable Drainage Systems (SuDS) guidelines. FP McCann’s precast concrete attenuation tanks are engineered to satisfy these mandatory requirements, providing temporary storage for excess run-off and restricting flow rates to original greenfield conditions.

Key Benefits of Precast Concrete Attenuation:

• Structural Strength: Inherent load-bearing capacity allows installation beneath roads and commercial yards without the risk of flotation or collapse associated with plastic crates.
• Speed of Installation: Factory-manufactured modular units ensure quick construction using standard joints, significantly reducing site person-hours and weather delays.
• Adoptability: All FP McCann storm attenuation products comply with ‘Sewers for Adoption’ and are fully Section 104 adoptable.
• Durability: Manufactured to BS EN 1916 and BS 5911-1 standards, our concrete systems offer a proven 120-year design life.

Our Stormstore™ Product Range

Stormstore™ Precast Concrete Attenuation Tanks & Chambers

FP McCann’s Stormstore™ range provides industry-leading precast concrete attenuation tanks and chamber systems for effective stormwater management across the UK. Designed to meet the rigorous demands of modern infrastructure, our precast concrete solutions offer significant advantages over traditional in-situ built units and plastic crate alternatives.

With a flexible, modular design, our stormwater attenuation systems can be tailored for a wide variety of applications. Whether you require standard manhole chambers, heavy-duty draw pits, pumping stations, or Combined Sewer Overflow (CSO) chambers, the Stormstore™ system delivers unparalleled structural integrity and a 120-year design life. As a specialist subcontractor, FP McCann assists with the design, manufacture, and installation of these systems, ensuring seamless integration into your project.

StormHold™ – Precast Pipe Tank System

The StormHold™ system offers a complete, adaptable solution for underground stormwater storage. Utilising tried-and-tested precast concrete pipes, it can be combined with culverts, manifold systems, and soakaways. It is fully Section 104 adoptable by water companies and can be installed in highly trafficked areas, such as roads and car parks, without the need for geotechnical anchors.

Precast Pit Solutions

Our bespoke precast concrete pits provide a rapid, off-site alternative to in-situ construction. Ideal for power, infrastructure, and airfield projects, these modular draw pits and communication chambers reduce on-site construction time by up to 85%. They can be supplied to meet F900+ heavy-duty loading requirements.

StormChamber™ – Multipurpose Chambers

The StormChamber™ is a highly versatile precast concrete unit consisting of a base and cover slab. Available in sizes up to 5000mm x 3500mm, it is the perfect solution for flow control chambers, penstock valves, large attenuation tanks, and clean water storage. It is designed to accommodate pedestrian, motorway, port and airfield loading categories.

StormCleanser™ Hydrodynamic Separator

The StormCleanser™ provides a highly efficient, low-maintenance solution for treating urban stormwater run-off. With no moving parts and requiring no power, this hydrodynamic separator removes suspended solids, hydrocarbons, and floatable debris before water is discharged. It is a vital component for SuDS-compliant drainage networks.