Brett Martin Plumbing and Drainage has provided the answer to managing heavy rainfall with the launch of StormCrate55, an underground modular geocellular unit which is proven as a cost-effective solution to surface water run-off in a wide range of below ground applications.
Weighing in at only 15.5kg per module and measuring 1200mm x 600mm x 347mm, the StormCrate55 modular units can be easily lifted by hand and then laid or stacked in rows. Designed and developed by Brett Martin, there are four units per 1m³ which simplifies calculations and the crate is high strength with a loading capability of 562kN per m2.
Manufactured from 100% recycled plastic at Brett Martin’s factory in Northern Ireland, StormCrate55 has a high void ratio of 95% which means that the units are highly efficient at storing up to 237.5 litres of water in the event of heavy rains. The units are suitable for installation in landscaped areas, pedestrianised spaces, playgrounds, parking areas, driveways and access zones.
StormCrate55 can be wrapped in a geotextile which allows stored water to slowly seep into the surrounding ground and back into the water table. Another common practice is to surround StormCrate55 with an impermeable geomembrane to create a sealed underground tank. The outlet from this tank is then controlled to facilitate a slow release of the stored water back into the drainage system over a longer period.