Soakaway

Sub-surface infiltration of surface water into surrounding ground

Stormbreaker is ideal for use as a method of dealing with excess water at source, as opposed to diverting it into perhaps already overburdened mains drainage systems.

It is also suitable for where connection to the mains drainage systems is not appropriate, too costly or not otherwise required.

The subsurface structure of Stormbreaker allows surface water to be conveyed, before measured infiltration into the surrounding ground. Surface water collected from roofs, paved areas and other impermeable surfaces is discharged into silt trap, and channelled via a perforated distributor pipe into the soakaway unit. In time, the water will then disperse through the permeable geotextile and into the surrounding ground.

FEATURES AND BENEFITS

• High void ratio, at 95%
• Vertical and lateral compressive strength suitable for domestic property
• Light and easy to handle, with no jointing clips
• Modular format accommodates both shallow and deep installations
• A direct connection into the unit is not required
• Silt chambers ensure reduction in siltation in the attenuation structure.

Part H of the Building Regulations, section H3 states the following:

Rainwater Drainage

1. Adequate provision shall be made for rainwater to be carried from the roof of the building.
2. Paved areas around the building shall be so constructed as to be adequately drained.

Listed in order of preference, the following methods are recommended:

1. an adequate soakaway or some other adequate infiltration system; or, where that is not reasonably practicable:
2. a watercourse; or, where that is not reasonably practicable:
3. a sewer

Looking at alternative methods of soakaway in more detail, there are further clear advantages which Stormbreaker can bring.

A standard and widely used rubble or stone filled soakaway will on average give a void ratio of 30%; Stormbreaker provides 95% void per volume. In addition, the lightweight, easily installed and environmentally sensitive nature of an Stormbreaker block further reinforces the system as a superior soakaway solution.

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