EnviroCrate H10 100L Shallow Storm Soakaway Crate

The EnviroCrate H10 is a shallow depth stormwater soakaway and attenuation crate designed for installations where excavation depth is limited. With a profile of just 100 mm, it is commonly used beneath roof gardens, landscaped areas, podium decks, sports surfaces and shallow build ups where conventional soakaway crates are impractical.

Each unit provides 100 litres of water storage with a 91 percent void ratio, allowing efficient stormwater management while keeping overall system depth to a minimum. The modular 1 m x 1 m format allows tanks to be built in flexible layouts, making the system suitable for both residential and commercial SuDS applications.

EnviroCrate H10 can be used for infiltration soakaways when wrapped in a permeable non woven geotextile membrane, preventing soil fines from entering the system while allowing controlled discharge into the surrounding ground. For attenuation or water storage systems, the crates should be encapsulated in an impermeable geomembrane with a protection fleece.

Despite its shallow depth, the crate offers high compressive and lateral strength and is suitable for trafficked areas when installed with the correct cover depth and backfill. Typical applications include car parks, landscaped podiums, roof gardens and areas with limited formation depth.

Limitations should be assessed early. Infiltration performance depends on ground permeability, and cover requirements increase with vehicle loading. Ground conditions and groundwater levels must be considered during design.

Shallow 100 mm profile for restricted depth installations

100 litre storage capacity per crate

High void ratio for efficient water storage

Suitable for pedestrian, car and HGV trafficked areas

Lightweight modular units for fast installation

Manufactured in the UK from recycled polypropylene

Manufactured from recycled polypropylene. This provides long term durability, resistance to chemicals and groundwater, and structural stability under load.

Product Name: EnviroCrate H10
Nominal Size: 1000 mm x 1000 mm x 100 mm
Storage Volume: 100 litres per crate
Crates per cubic metre: 10
Unit Weight: approx. 8 kg
Void Ratio: 91 percent
Compressive Strength: greater than 320 kN/m²
Lateral Strength: greater than 150 kN/m²
Manufacturing Standard: ISO 9001
Material: Recycled polypropylene
Origin: UK manufactured

Minimum Cover Depths (Indicative)

1 tonne axle load: 200 mm
2 tonne axle load: 250 mm
5 tonne axle load: 300 mm
10 tonne axle load: 400 mm
12 tonne axle load: 450 mm

Geotextile Membrane Option (Single Sheet Supply)

Non woven needle punched geotextile membrane
Supplied as one pre cut sheet per order, sized to suit the total number of crates purchased

Typical sheet sizes supplied

1 crate: 6.75 m² (2.25 m x 3.0 m)
3 crates: 15.75 m² (2.25 m x 7.0 m)
6 crates: 29.25 m² (2.25 m x 13.0 m)